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Sang Z, Qiao Y, Chen R, Yin L, Hou F, Liang J. Internal hydrogen-bond enhanced two-electron oxygen reduction reaction for π-d conjugated metal-organic framework to H 2O 2 synthesis. Nat Commun 2025; 16:4050. [PMID: 40307221 PMCID: PMC12043898 DOI: 10.1038/s41467-025-58628-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Accepted: 03/26/2025] [Indexed: 05/02/2025] Open
Abstract
Tailoring the electronic structure of electrocatalysts for oxygen reduction reaction (ORR) has been widely adopted to optimize their performance. However, the steric effect originating from the layered or crystal structure of a catalyst is often neglected. Herein, we demonstrate the importance of such steric effect in a one-dimensional π-d conjugated metal-organic framework with Ni-(NH)4 nodes (Ni-BTA) for optimizing its electrocatalytic performance, where the activity and selectivity towards two-electron ORR for H2O2 production are largely enhanced. Theoretical simulation and in-situ characterization demonstrate the formation of inter-layer H-bonds between *OOH intermediates and -N-H groups in the adjacent top layers of the Ni-sites, enhancing the *OOH binding energy to an optimum value. Thus, the as-prepared Ni-BTA catalyst exhibits an outstanding electrocatalytic 2e--ORR performances under neutral and alkaline conditions (e.g., >85% H2O2 selectivity from -0.1-0.4 V vs. RHE and >13.5 mol g-1 h-1 H2O2 yield in neutral electrolytes), also showing great potential on water treatment and disinfection. Here, we highlight the alternative avenues for utilizing the non-coordinated structure to regulate the catalytic performance, thus providing opportunities for the design of catalysts and beyond.
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Affiliation(s)
- Zhiyuan Sang
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Yuqian Qiao
- School of Materials Science and Engineering, Peking University, 100871, Beijing, China
| | - Rui Chen
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Lichang Yin
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Science, Shenyang, 110016, China
| | - Feng Hou
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Ji Liang
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China.
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2
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Choi H, Shin SJ, Bae G, Cho J, Han MH, Sougrati MT, Jaouen F, Lee KS, Oh HS, Kim H, Choi CH. Space Charge, Modulating the Catalytic Activity of Single-Atom Metal Catalysts. J Am Chem Soc 2025; 147:13220-13228. [PMID: 40228163 DOI: 10.1021/jacs.4c17413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2025]
Abstract
Potential-induced electrode charging is a prerequisite to initiate electrochemical reactions at the electrode-electrolyte interface. The 'interface space charge' could dramatically alter the reaction environment and the charge density of the active site, both of which potentially affect the electrochemical activity. However, our understanding of the electrocatalytic role of space charge has been limited. Here, we separately modulate the amount of space charge (characterized by the areal density, σ) with maintaining the electrochemical potential for the oxygen reduction reaction (ORR) at the same level, by exploiting the unique structural feature of MeNC. We reveal that changes in σ control the ORR activity, which is computationally explained by the inductive polarization of the charge density at the active sites, affecting their turnover rates. To guide catalyst design including the space charge effect, we develop a new descriptor, explaining the activity trend in various metal centers and pH conditions using a single volcano. These findings offer fresh insights into the role of space charge in electrocatalysis, providing a new framework for optimizing catalyst design and performance.
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Affiliation(s)
- Hansol Choi
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Seung-Jae Shin
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Geunsu Bae
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Junsic Cho
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Man Ho Han
- Clean Energy Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | | | - Frédéric Jaouen
- ICGM, University of Montpellier, CNRS, ENSCM, 34293 Montpellier, France
| | - Kug-Seung Lee
- Beamline Department, Pohang Accelerator Laboratory, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Hyung-Suk Oh
- Clean Energy Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- KIST-SKKU Carbon-Neutral Research Center, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hyungjun Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Chang Hyuck Choi
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
- Institute for Convergence Research and Education in Advanced Technology (I-CREATE), Yonsei University, Seoul 03722, Republic of Korea
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3
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Ghosal M, Mondal S, Ghosh T, Prusty D, Senapati D. Core-to-Shell Thickness-Regulated Ag@Au Nanocatalyst for LSPR-Improved In Situ Detection of Extracellular Peroxide: Response in a Cancer Cell. Anal Chem 2025; 97:7651-7661. [PMID: 39983018 DOI: 10.1021/acs.analchem.4c04651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2025]
Abstract
In the current study, we designed a unique core-to-shell thickness-regulated Ag@Au nanocatalyst (CSNPs) for H2O2-induced selective oxidative etching of core silver. Synthesized CSNPs exhibit high colloidal stability and demonstrate a significant localized surface plasmon resonance (LSPR) effect in the biological window. These unique properties in turn allow us to formulate a unique CSNP-based LSPR-induced electrochemical detection assay for selective trace-level sensing of H2O2 in vitro. Conceptually, we utilized LSPR to amplify the electrochemical signals by inducing the generation of hot electrons and hot holes, which can be harnessed for catalytic purposes. Here, the Au shell acts as a supplier of the hot electron for enhanced catalytic reduction of H2O2 where the free electron of the Au shell is subsidized by the Ag core by its subsequent oxidation. The combination of high LSPR property, stability, and efficient binding property makes these NPs not only a surface-enhanced Raman scattering (SERS) enhancer but also a promising electrocatalyst for biomolecule detection, which emphasizes the significant potential of these engineered nanomaterials in various applications.
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Affiliation(s)
- Manorama Ghosal
- Chemical Sciences Division, Homi Bhabha National Institute, Saha Institute of Nuclear Physics, A CI of Homi Bhabha National Institute, 1/AF Bidhannagar, Kolkata 700064, India
| | - Subrata Mondal
- Department of Chemistry, Dinhata College, Dinhata, Cooch Behar 736135, India
| | - Tanmay Ghosh
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis # 08-03, Singapore 138634, Republic of Singapore
| | - Debasish Prusty
- Biophysics and Structural Genomics Division, Homi Bhabha National Institute, Saha Institute of Nuclear Physics, A CI of Homi Bhabha National Institute, 1/AF Bidhannagar, Kolkata 700064, India
| | - Dulal Senapati
- Chemical Sciences Division, Homi Bhabha National Institute, Saha Institute of Nuclear Physics, A CI of Homi Bhabha National Institute, 1/AF Bidhannagar, Kolkata 700064, India
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4
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Lee Y, Seong J, Choi J, Kwon YG, Cheong D, Lee J, Lee S, Lee H, Kwon Y, Lee JH, Lah MS, Song HK. Intramolecular Double Activation by Biligands Sharing a Single Metal Atom for Preferred Two-Electron Oxygen Reduction. ACS APPLIED MATERIALS & INTERFACES 2025; 17:21156-21167. [PMID: 40150931 DOI: 10.1021/acsami.4c21525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/29/2025]
Abstract
It is challenging to selectively promote the two-electron oxygen reduction reaction (2e-ORR) since highly ORR-active electrocatalysts are not satisfied with 2e-ORR and are most likely to go all the way to 4e-ORR, completely reducing dioxygen to water. Recently, however, the possibility of a 2e-ORR preference over 4e-ORR was raised by extensively considering multiple ORR mechanisms and employing a potential-dependent activity measure for constructing volcano plots. Here, we realized the preferred 2e-ORR via an intramolecular double activation of the peroxide intermediate (*OOH) by allowing the intermediate to be easily desorbed before proceeding to 4e-ORR. Dioxygen was transformed to *OOH on a carbon atom of the imidazole ligand of zeolitic imidazolate framework-8 (ZIF-8). When an amine group was introduced via ligand exchange, the selectivity of 2e-ORR was enhanced by 11%. The added amine attracted the oxygen atom of *OOH via a hydrogen bond to weaken the binding strength of *OOH to the carbon active site (double activation). The amine-decorated ZIF-8 exhibited H2O2 faradaic efficiency at 98.5% at ultrahigh-rate production at 625 mg cm-2 h-1 by 1 A cm-2 in a flow cell.
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Affiliation(s)
- Yeongdae Lee
- School of Energy and Chemical Engineering, UNIST, Ulsan 44919, South Korea
- Department of Chemistry, Yale University, New Haven, Connecticut 06511, United States
| | - Junmo Seong
- Department of Chemistry, UNIST, Ulsan 44919, South Korea
| | - Jihoon Choi
- School of Energy and Chemical Engineering, UNIST, Ulsan 44919, South Korea
| | - Yeong Gwang Kwon
- School of Energy and Chemical Engineering, UNIST, Ulsan 44919, South Korea
| | - Dosol Cheong
- School of Energy and Chemical Engineering, UNIST, Ulsan 44919, South Korea
| | - Jisu Lee
- School of Energy and Chemical Engineering, UNIST, Ulsan 44919, South Korea
| | - Seonghwan Lee
- Department of Chemistry, UNIST, Ulsan 44919, South Korea
| | - Hojeong Lee
- School of Energy and Chemical Engineering, UNIST, Ulsan 44919, South Korea
| | - Youngkook Kwon
- School of Energy and Chemical Engineering, UNIST, Ulsan 44919, South Korea
| | - Jun Hee Lee
- School of Energy and Chemical Engineering, UNIST, Ulsan 44919, South Korea
| | - Myoung Soo Lah
- Department of Chemistry, UNIST, Ulsan 44919, South Korea
| | - Hyun-Kon Song
- School of Energy and Chemical Engineering, UNIST, Ulsan 44919, South Korea
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Sun R, Zhu M, Chen J, Yan L, Bai L, Ning J, Zhong Y, Hu Y. Tuning the Formation Kinetics of *OOH Intermediate with Hollow Bowl-Like Carbon by Pulsed Electroreduction for Enhanced H 2O 2 Production. ACS NANO 2025; 19:13414-13426. [PMID: 40151875 DOI: 10.1021/acsnano.5c01453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/29/2025]
Abstract
The electrochemical synthesis of hydrogen peroxide (H2O2) via the two-electron oxygen reduction reaction (2e- ORR) is a promising alternative to the conventional anthraquinone method. However, due to local alkalinization near the catalyst surface, the restricted oxygen replenishment and insufficient activated water molecule supply limit the formation of the key *OOH intermediate. Herein, a pulsed electrocatalysis approach based on a structurally optimized S/N/O tridoped hollow carbon bowl catalyst has been proposed to overcome this challenge. In an H-type electrolytic cell, the pulsed method achieves a superior H2O2 yield rate of 55.6 mg h-1 mgcat.-1, approximately 1.6 times higher than the conventional potentiostatic method (34.2 mg h-1 mgcat.-1), while maintaining the Faradaic efficiency above 94.6%. In situ characterizations, finite element simulations, and density functional theory analyses unveil that the application of pulsed potentials mitigates the local OH- concentration, enhances the water activation and proton generation, and facilitates oxygen production within the hollow bowl-like carbon structure. These effects synergistically accelerate the formation kinetics of the *OOH intermediate by the efficient generation of *O2 and *H2O intermediates, leading to superior H2O2 yields. This work develops a strategy to tune catalytic environments for diverse catalytic applications.
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Affiliation(s)
- Ruoxuan Sun
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, Jinhua 321004, China
| | - Minghui Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, Jinhua 321004, China
| | - Jie Chen
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, Jinhua 321004, China
| | - Lei Yan
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China
| | - Liyi Bai
- Suzhou Laboratory, Suzhou 215100, China
| | - Jiqiang Ning
- Department of Optical Science and Engineering, Fudan University, Shanghai 200438, China
| | - Yijun Zhong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, Jinhua 321004, China
| | - Yong Hu
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China
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Qin Q, Huang M, Han C, Jing X, Shi W, Ding R, Yin X. Molecular coordination inheritance of single Co atom catalysts for two-electron oxygen reduction reaction. NANOSCALE 2025; 17:8672-8679. [PMID: 40066949 DOI: 10.1039/d5nr00337g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2025]
Abstract
Electrosynthesis of hydrogen peroxide (H2O2) through the two-electron oxygen reduction reaction (2e-ORR) is environmentally friendly and sustainable. Transition-metal single-atom catalysts (SACs) have gained attention for this application due to their low cost, high atom utilization, adjustable coordination, and geometric isolation of active metal sites. Although various synthetic methods of SACs have been reported, the specific mechanism of the formation of active sites is still less studied. Herein, we presented the molecular coordination inheritance strategy for synthesizing 2e-ORR SACs with well-defined coordination environments and investigated the formation mechanism of the active sites. We select precursors including [Co(II)Salen], CoPc, Co(acac)2 to achieve specific configurations (Co-N2O2, Co-N4, Co-O4). Our results indicate that the precursors undergo decomposition and are partially embedded in the carbon substrate at lower temperatures, facilitating the inheritance of the desired configurations. As the temperature increases, the inherited configurations will rearrange, forming dual-atom structures and metal particles gradually. Among the Co-N2O2, Co-N4, and Co-O4 catalysts, the Co-N2O2 catalyst demonstrates the highest 2e-ORR selectivity. This work reveals the mechanism of regulating SAC's active site structure by the molecular coordination inheritance strategy, which may provide new insights for further research on the precise regulation and formation mechanism of SAC's active site.
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Affiliation(s)
- Qianqian Qin
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, China.
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mengxue Huang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, China.
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chaoqi Han
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, China.
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xue Jing
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, China.
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenwen Shi
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, China.
| | - Ruiming Ding
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, China.
| | - Xi Yin
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, China.
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Liu Y, Liu S, Jiang J, Wei X, Zhao K, Shen R, Wang X, Wei M, Wang Y, Pang H, Li B. Monomolecule Coupled to Oxygen-Doped Carbon for Efficient Electrocatalytic Hydrogen Peroxide Production. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2025; 37:e2502197. [PMID: 39995369 DOI: 10.1002/adma.202502197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2025] [Revised: 02/17/2025] [Indexed: 02/26/2025]
Abstract
The electrocatalytic production of hydrogen peroxide (H2O2) is an ideal alternative for the industrial anthraquinone process because of environmental friendliness and energy efficiency, depending on the activity and selectivity of catalysts. Carbon-based materials possess prospects as candidate catalysts for the production of H2O2. Herein, cedar-derived monolithic carbon catalysts modified with coupling oxygen doping and phthalocyanine molecules are synthesized. Cobalt phthalocyanine (CoPc) molecules are introduced onto the carbon surface to construct monomolecular active sites via π-π stacking. The electronic structure of CoPc is modulated by oxygen doping on carbon substrates, mediated by monomolecular π-π stacking. A synergistic effect optimally modulated the interaction between CoPc and key intermediate to H2O2. The energy barrier for oxygen reduction is reduced to optimize the selectivity to H2O2. CoPc@OCW provided up to 99% selectivity to H2O2 at 0.7 V versus RHE. In a three-phase flow cell, CoPc@OCW achieved an H2O2 yield up to 10.4 mol·g-1·h-1 at 0.2 V versus RHE with stable running for 24 h. The advantages of carbon-based catalysts including the adjustable chemical structure depending on π-π stacking and electronic structure of carbon atoms through oxygen doping improved the catalytic performances in the production of H2O2. This proof-to-concept research demonstrates the potential application of carbon-based molecular catalysts for electrochemical synthesis.
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Affiliation(s)
- Yanyan Liu
- College of Science, Henan Agricultural University, Zhengzhou, 450002, P. R. China
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China
- Institute of Chemistry Industry of Forest Productsversity, CAF, National Engineering Lab for Biomass Chemical Utilization, Nanjing, 210042, P. R. China
| | - Shuling Liu
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Jianchun Jiang
- College of Science, Henan Agricultural University, Zhengzhou, 450002, P. R. China
- Institute of Chemistry Industry of Forest Productsversity, CAF, National Engineering Lab for Biomass Chemical Utilization, Nanjing, 210042, P. R. China
| | - Xinao Wei
- College of Science, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Keke Zhao
- College of Science, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Ruofan Shen
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Xiaopeng Wang
- College of Science, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Min Wei
- College of Science, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Yongfeng Wang
- Center for Carbon-based Electronics and Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University, Beijing, 100871, P. R. China
| | - Huan Pang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225009, P. R. China
| | - Baojun Li
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China
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Yang S, Miao J, Hou N, Liu M, Jing B, Zhang J, Qiu S, Deng F. Engineering Localized Alkalinity and Oxygen Enrichment for Efficient Acidic O 2-to-H 2O 2 Electroreduction via Carbon-Based Triphase Interfaces. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2025; 21:e2500499. [PMID: 40143782 DOI: 10.1002/smll.202500499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2025] [Revised: 02/25/2025] [Indexed: 03/28/2025]
Abstract
The sustainable production of hydrogen peroxide (H2O2) via the two-electron oxygen reduction reaction (2e⁻ ORR) on carbon-based catalysts offers a compelling alternative to the energy-intensive anthraquinone process. However, the slow kinetics of the 2e⁻ ORR in acidic media limits its efficiency. Herein, a novel strategy is introduced to overcome this limitation by engineering a needle-shaped hydrophobic carbon felt embedded with hard carbon as a natural air diffusion electrode (ADE). In situ and ex situ characterization show this design creates an oxygen-enriched, locally alkaline microenvironment at the triphase interface, which accelerates 2e⁻ ORR kinetics by confining oxygen enrichment within the hard carbon layer. Quantitatively, this oxygen-enriched hydrothermal carbon electrocatalyst achieves a remarkable H2O2 selectivity of 95.47% at near-zero overpotential and a high production rate of 487.82 mg L-1 h-1 at 200 mA cm-2. Furthermore, density functional theory calculations reveal that the carboxyl and ether functional groups in hydrothermal hard carbon optimize O2 * and OOH* adsorption, promoting the desired 2e⁻ pathway. Importantly, this ADE design not only exhibits exceptional performance and long-term stability but also demonstrates a significantly reduced global warming potential compared to conventional methods, highlighting its potential to revolutionize industrial-scale H2O2 electrosynthesis by replacing commercial carbon black-based cathodes.
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Affiliation(s)
- Shilin Yang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Jingyu Miao
- Contemporary Amperex Technology Limited, Ningde, 352100, China
| | - Nannan Hou
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Minghui Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Baojian Jing
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Jiayu Zhang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Shan Qiu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Fengxia Deng
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
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9
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Cao Y, Liu Y, Zheng X, Yang J, Wang H, Zhang J, Han X, Deng Y, Rupprechter G, Hu W. Quantifying Asymmetric Coordination to Correlate with Oxygen Reduction Activity in Fe-Based Single-Atom Catalysts. Angew Chem Int Ed Engl 2025; 64:e202423556. [PMID: 39844730 DOI: 10.1002/anie.202423556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2024] [Revised: 01/21/2025] [Accepted: 01/21/2025] [Indexed: 01/24/2025]
Abstract
Precisely manipulating asymmetric coordination configurations and examining electronic effects enable to tunethe intrinsic oxygen reduction reaction (ORR) activity of single-atom catalysts (SACs). However, the lackof a definite relationship between coordination asymmetry and catalytic activity makes the rational design of SACs ambiguous. Here, we propose a concept of "asymmetry degree" to quantify asymmetric coordination configurations and assess the effectiveness of active moieties in Fe-based SACs. A theoretical framework is established, elucidating the volcanic relationship between asymmetry degree and ORR activity by constructing a series of Fe-based SAC models doped with non-metal atoms (B, P, S, Se, and Te) in the first or second coordination sphere, which aligns with Sabatier principle. The predicted ORR activity of Fe asymmetric active moieties is then experimentally validated using asymmetry degree. The combined computational and experimental results suggest that single-atom moiety with a moderate asymmetry degree exhibits optimal intrinsic ORR activity, because breaking the square-planar symmetry of FeN4 can alter the electronic population of the Fe 3d-orbital, thereby optimizing the adsorption-desorption strength of intermediates and thus enhancing the intrinsic ORR activity. This fundamental understanding of catalytic activity from geometric and electronic aspects offers a rational guidance to design high-performance SACs with asymmetric configurations.
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Affiliation(s)
- Yanhui Cao
- School of Materials Science and Engineering, State Key Laboratory of Precious Metal Functional Materials, Tianjin Key Laboratory of Composite and Functional Materials, Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), Tianjin University, Tianjin, 300072, P. R. China
| | - Yuan Liu
- School of Materials Science and Engineering, State Key Laboratory of Precious Metal Functional Materials, Tianjin Key Laboratory of Composite and Functional Materials, Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), Tianjin University, Tianjin, 300072, P. R. China
| | - Xuerong Zheng
- School of Materials Science and Engineering, State Key Laboratory of Precious Metal Functional Materials, Tianjin Key Laboratory of Composite and Functional Materials, Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), Tianjin University, Tianjin, 300072, P. R. China
- School of Materials Science and Engineering, State Key Laboratory of Tropic Ocean Engineering Materials and Materials Evaluation, Key Laboratory of Pico Electron Microscopy of Hainan Province, Hainan University, Haikou, 570228, P. R. China
| | - Jingxia Yang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, P. R. China
| | - Haozhi Wang
- School of Materials Science and Engineering, State Key Laboratory of Tropic Ocean Engineering Materials and Materials Evaluation, Key Laboratory of Pico Electron Microscopy of Hainan Province, Hainan University, Haikou, 570228, P. R. China
| | - Jinfeng Zhang
- School of Materials Science and Engineering, State Key Laboratory of Precious Metal Functional Materials, Tianjin Key Laboratory of Composite and Functional Materials, Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), Tianjin University, Tianjin, 300072, P. R. China
| | - Xiaopeng Han
- School of Materials Science and Engineering, State Key Laboratory of Precious Metal Functional Materials, Tianjin Key Laboratory of Composite and Functional Materials, Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), Tianjin University, Tianjin, 300072, P. R. China
| | - Yida Deng
- School of Materials Science and Engineering, State Key Laboratory of Precious Metal Functional Materials, Tianjin Key Laboratory of Composite and Functional Materials, Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), Tianjin University, Tianjin, 300072, P. R. China
- School of Materials Science and Engineering, State Key Laboratory of Tropic Ocean Engineering Materials and Materials Evaluation, Key Laboratory of Pico Electron Microscopy of Hainan Province, Hainan University, Haikou, 570228, P. R. China
| | - Günther Rupprechter
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/BC, 1060, Vienna, Austria
| | - Wenbin Hu
- School of Materials Science and Engineering, State Key Laboratory of Precious Metal Functional Materials, Tianjin Key Laboratory of Composite and Functional Materials, Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), Tianjin University, Tianjin, 300072, P. R. China
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10
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Yuan K, Li H, Gu X, Zheng Y, Wu X, Zhao Y, Zhou J, Cui S. Electrocatalysts for the Formation of Hydrogen Peroxide by Oxygen Reduction Reaction. CHEMSUSCHEM 2025; 18:e202401952. [PMID: 39503346 DOI: 10.1002/cssc.202401952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2024] [Revised: 11/04/2024] [Accepted: 11/04/2024] [Indexed: 11/08/2024]
Abstract
Hydrogen peroxide (H2O2) is a widely used strong oxidant, and its traditional preparation methods, anthraquinone method, and direct synthesis method, have many drawbacks. The method of producing H2O2 by two-electron oxygen reduction reaction (2e- ORR) is considered an alternative strategy for the traditional anthraquinone method due to its high efficiency, energy saving, and environmental friendliness, but it remains a big challenge. In this review, we have described the mechanism of ORR and the principle of electrocatalytic performance testing, and have summarized the standard performance evaluation techniques for electrocatalysts to produce H2O2. Secondly, according to the theoretical calculation and experimental results, several kinds of efficient electrocatalysts are introduced. It is concluded that noble metal-based materials, carbon-based materials, non-noble metal composites, and single-atom catalysts are the preferred catalyst materials for the preparation of H2O2 by 2e- ORR. Finally, the advantages and novelty of 2e- ORR compared with traditional methods for H2O2 production, as well as the advantages and disadvantages of the above-mentioned high-efficiency catalysts, are summarized. The application prospect and development direction of high-efficiency catalysts for H2O2 production by 2e- ORR has been prospected, which is of great significance for promoting the electrochemical yield of H2O2 and developing green chemical production.
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Affiliation(s)
- Ke Yuan
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 211816, China
| | - Hong Li
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 211816, China
| | - Xindi Gu
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 211816, China
| | - Yalei Zheng
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 211816, China
| | - Xiaodong Wu
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 211816, China
| | - Yihe Zhao
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 211816, China
| | - Jiejie Zhou
- Aerospace Research Institute of Materials & Processing Technology, Beijing, 100076, China
| | - Sheng Cui
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 211816, China
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11
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Jia J, Li Z, Sang Z, Liu X, Peng W, Chen R, Jiang Q, Li X, Ren Z, Hao W, Yin L, Liu J, Hou F, Liang J. High-throughput Design of Single-atom Catalysts with Nonplanar and Triple Pyrrole-N Coordination for Highly Efficient H 2O 2 Electrosynthesis. Angew Chem Int Ed Engl 2025; 64:e202421864. [PMID: 39740117 DOI: 10.1002/anie.202421864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2024] [Revised: 12/19/2024] [Accepted: 12/30/2024] [Indexed: 01/02/2025]
Abstract
Single-atom catalysts (SACs) with nonplanar configurations possess unique capabilities for tailoring the oxygen reduction reaction (ORR) catalytic performance compared with the ones with planar configurations, owing to the additional orbital rearrangement arising from the asymmetric coordination atoms. However, the systematic investigation of these nonplanar SACs has long been hindered by the difficulty in screening feasible nonplanar configurations and precisely controlling the coordination structures. Herein, we demonstrate a combined high-throughput screening and experimental verification of nonplanar SACs (ppy-MN3) with metal atoms triple-coordinated by pyrrole-N, for highly active and selective 2e- ORR electrocatalysis. With the additional p-orbital rearrangement of N-ligands for ppy-MN3 during catalysis, a new descriptor on the energy difference between d-band center of metal sites and p-band centers of N-ligands (Δϵd-p) is proposed to accurately identify the relationship between their catalytic activities and electronic structures, on top of the conventional d-band center theory. Consequently, ppy-ZnN3 is identified with excellent 2e- ORR activity (η=0.08 eV) and selectivity, as well as a low 2e- ORR kinetic barrier under alkaline condition owing to a strong hydrogen bonding between OOH* intermediate and interfacial water, which is then experimentally verified by its high electrocatalytic H2O2 yield (43 mol g-1 h-1) and selectivity (92 %) under alkaline condition. This study thus presents a proof-of-concept demonstration of the performance-oriented and precise coordination design of nonplanar SACs for efficient H2O2 electrosynthesis, and, more importantly, provides an essential complement to the d-band theory for more accurately predicting the catalytic activities of catalysts with nonplanar configurations for series potential electrochemical processes.
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Affiliation(s)
- Jingjing Jia
- Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin, University, Tianjin, 300072, China
| | - Zhenxin Li
- Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin, University, Tianjin, 300072, China
| | - Zhiyuan Sang
- Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin, University, Tianjin, 300072, China
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China
| | - Xiaoqing Liu
- Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin, University, Tianjin, 300072, China
| | - Wei Peng
- Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin, University, Tianjin, 300072, China
| | - Rui Chen
- Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin, University, Tianjin, 300072, China
| | - Qiao Jiang
- Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin, University, Tianjin, 300072, China
| | - Xia Li
- Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin, University, Tianjin, 300072, China
| | - Zhizhen Ren
- School of Physics, Beihang University, Beijing, 100191, China
- The Analysis & Testing Center, Beihang University, Beijing, 100191, China
| | - Weichang Hao
- School of Physics, Beihang University, Beijing, 100191, China
- The Analysis & Testing Center, Beihang University, Beijing, 100191, China
| | - Lichang Yin
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Science, Shenyang, 110016, China
| | - Jiachen Liu
- Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin, University, Tianjin, 300072, China
| | - Feng Hou
- Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin, University, Tianjin, 300072, China
| | - Ji Liang
- Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin, University, Tianjin, 300072, China
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12
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Melchionna M, Fornasiero P. What Is to Be Expected from Heterogeneous Catalysis in the Pipeline to Circular Economy? CHEMSUSCHEM 2025; 18:e202402064. [PMID: 39600217 PMCID: PMC11874692 DOI: 10.1002/cssc.202402064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2024] [Revised: 10/11/2024] [Indexed: 11/29/2024]
Abstract
Modern society requires a change in the philosophy of doing science, which faces the enormous challenge of being compatible with the new sustainability principles. Inorganic chemistry holds the keys to accelerate the transition given that most chemical processes or technology devices rely on the use or integration of inorganic materials. In particular, heterogeneous catalysis has a central role in promoting the transition from a linear economy to a circular one. To accomplish this, it is imperative that the modern schemes for catalysis will adopt a holistic approach based on sensible choice of raw materials, reliance on clean energy inputs and establishment of a robust framework of resource use and recovery. Some of these concepts are analysed here and discussed in Ref. [to a few selected examples.
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Affiliation(s)
- Michele Melchionna
- Department of Chemical and PharmaceuticalINSTM UdRUniversity of TriesteVia Licio Giorgieri 134127TriesteItaly
| | - Paolo Fornasiero
- Department of Chemical and PharmaceuticalINSTM UdRUniversity of TriesteVia Licio Giorgieri 134127TriesteItaly
- ICCOM-CNR URT TriesteVia Licio Giorgieri 134127TriesteItaly
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13
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Wang C, Li T, Deng Q, Xie M, Ye Z. Stability challenges of transition metal-modified cathodes for electro-Fenton process: A mini-review. CHEMOSPHERE 2025; 373:144159. [PMID: 39889645 DOI: 10.1016/j.chemosphere.2025.144159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2024] [Revised: 10/14/2024] [Accepted: 01/23/2025] [Indexed: 02/03/2025]
Abstract
Electro-Fenton (EF) process with transition-metal (TM) modified cathode has been regarded as a green and promising technology for wastewater treatment. Recently, breakthroughs in boosting catalyst activity for both two-electron oxygen reduction reaction (2e- ORR) and Fenton's reaction have gained intensive attention. However, achieving long-term stability of catalysts remains challenging, but is decisive for large-scale applications. This minireview provides fundamental understanding on the activity-stability correlation and the deactivation mechanisms of TM-based catalysts in EF systems, focusing on physical and chemical evolution, metal dissolution, catalyst detachment and structure collapse during long-term electrolysis. Subsequently, ongoing efforts from catalyst design to electrode engineering to stabilize the metal active sites are highlighted. Finally, the challenges and future perspectives in developing active and durable TM-modified cathodes are discussed, serving as a roadmap towards the large-scale application of EF process for wastewater treatment.
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Affiliation(s)
- Chao Wang
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, 400045, China.
| | - Tongxu Li
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, 400045, China.
| | - Qianyin Deng
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, 400045, China.
| | - Mengchu Xie
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, 400045, China.
| | - Zhihong Ye
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, 400045, China.
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14
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Zhu J, Pedersen A, Kellner S, Hunter RD, Barrio J. Impact of ionomers on porous Fe-N-C catalysts for alkaline oxygen reduction in gas diffusion electrodes. Commun Chem 2025; 8:27. [PMID: 39891015 PMCID: PMC11785744 DOI: 10.1038/s42004-025-01422-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2024] [Accepted: 01/20/2025] [Indexed: 02/03/2025] Open
Abstract
Alkaline exchange membrane fuel cells (AEMFCs) offer a promising alternative to the traditional fossil fuel due to their ability to use inexpensive platinum group metal (PGM)-free catalysts, which could potentially replace Platinum-based catalysts. Iron coordinated in nitrogen-doped carbon (Fe-N-C) single atom electrocatalysts offer the best Pt-free ORR activities. However, most research focuses on material development in alkaline conditions, with limited attention on catalyst layer fabrication. Here, we demonstrate how the oxygen reduction reaction (ORR) performance of a porous Fe-N-C catalyst is affected by the choice of three different commercial ionomers and the ionomer-to-catalyst ratio (I/C). A Mg-templated Fe-N-C is employed as a catalyst owing to the electrochemical accessibility of the Fe sites, and the impact of ionomer properties and coverage were studied and correlated with the electrochemical performance in a gas-diffusion electrode (GDE). The catalyst layer with Nafion at I/C = 2.8 displayed the best activity at high current densities (0.737 ± 0.01 VRHE iR-free at 1 A cm⁻²) owing to a more homogeneous catalyst layer, while Sustainion displayed a higher performance in the kinetic region at the same I/C. These findings provide insights into the impact of catalyst layer optimization to achieve optimal performance in Fe-N-C based AEMFCs.
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Affiliation(s)
- Jinjie Zhu
- Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - Angus Pedersen
- Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, UK.
- Department of Materials, Royal School of Mines, Imperial College London, London, SW7 2AZ, UK.
| | - Simon Kellner
- Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - Robert D Hunter
- Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - Jesús Barrio
- Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, UK.
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15
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Xie L, Zhou W, Qu Z, Huang Y, Li L, Yang C, Li J, Meng X, Sun F, Gao J, Zhao G. Edge-doped substituents as an emerging atomic-level strategy for enhancing M-N 4-C single-atom catalysts in electrocatalysis of the ORR, OER, and HER. NANOSCALE HORIZONS 2025; 10:322-335. [PMID: 39552526 DOI: 10.1039/d4nh00424h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2024]
Abstract
M-N4-C single-atom catalysts (MN4) have gained attention for their efficient use at the atomic level and adjustable properties in electrocatalytic reactions like the ORR, OER, and HER. Yet, understanding MN4's activity origin and enhancing its performance remains challenging. Edge-doped substituents profoundly affect MN4's activity, explored in this study by investigating their interaction with MN4 metal centers in ORR/OER/HER catalysis (Sub@MN4, Sub = B, N, O, S, CH3, NO2, NH2, OCH3, SO4; M = Fe, Co, Ni, Cu). The results show overpotential variations (0 V to 1.82 V) based on Sub and metal centers. S and SO4 groups optimize FeN4 for peak ORR activity (overpotential at 0.48 V) and reduce OER overpotentials for NiN4 (0.48 V and 0.44 V). N significantly reduces FeN4's HER overpotential (0.09 V). Correlation analysis highlights the metal center's key role, with ΔG*H and ΔG*OOH showing mutual predictability (R2 = 0.92). Eg proves a reliable predictor for Sub@CoN4 (ΔG*OOH/ΔG*H, R2 = 0.96 and 0.72). Machine learning with the KNN model aids catalyst performance prediction (R2 = 0.955 and 0.943 for ΔG*OOH/ΔG*H), emphasizing M-O/M-H and the d band center as crucial factors. This study elucidates edge-doped substituents' pivotal role in MN4 activity modulation, offering insights for electrocatalyst design and optimization.
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Affiliation(s)
- Liang Xie
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, P. R. China.
| | - Wei Zhou
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, P. R. China.
| | - Zhibin Qu
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, P. R. China.
| | - Yuming Huang
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, P. R. China.
| | - Longhao Li
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, P. R. China.
| | - Chaowei Yang
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, P. R. China.
| | - Junfeng Li
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, P. R. China.
| | - Xiaoxiao Meng
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, P. R. China.
| | - Fei Sun
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, P. R. China.
| | - Jihui Gao
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, P. R. China.
| | - Guangbo Zhao
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, P. R. China.
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16
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Sun K, Lu R, Liu Y, Webb J, Hanif M, Zhao Y, Wang Z, Waterhouse GIN. Balancing Activity and Selectivity in Two-Electron Oxygen Reduction through First Coordination Shell Engineering in Cobalt Single Atom Catalysts. Angew Chem Int Ed Engl 2025; 64:e202416070. [PMID: 39639822 DOI: 10.1002/anie.202416070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2024] [Revised: 11/20/2024] [Accepted: 12/05/2024] [Indexed: 12/07/2024]
Abstract
The electrochemical two-electron oxygen reduction reaction (2e- ORR) offers a potentially cost-effective and eco-friendly route for the production of hydrogen peroxide (H2O2). However, the competing 4e- ORR that converts oxygen to water limits the selectivity towards hydrogen peroxide. Accordingly, achieving highly selective H2O2 production under low voltage conditions remains challenging. Herein, guided by first-principles density functional theory (DFT) calculations, we show that modulation the first coordination sphere in Co single atom catalysts (Co-N-C catalysts with Co-NxO4-x sites), specifically the replacement of Co-N bonds with Co-O bonds, can weaken the *OOH adsorption strength to boost the selectivity towards H2O2 (albeit with a slight decrease in ORR activity). Further, by synthesizing a series of N-doped carbon-supported catalysts with Co-NxO4-x active sites, we were able to validate the DFT findings and explore the trade-off between catalytic activity and selectivity for 2e- ORR. A catalyst with trans-Co-N2O2 sites exhibited excellent catalytic activity and H2O2 selectivity, affording a H2O2 production rate of 12.86 m o l g c a t . - 1 h - 1 ${mol\ {g}_{cat.}^{-1}{h}^{-1}{\rm \ }}$ and an half-cell energy-efficiency of 0.07 m o l H 2 O 2 g c a t . - 1 J - 1 ${{mol}_{{H}_{2}{O}_{2}}\ {g}_{cat.}^{-1}\ {J}^{-1}}$ during a 100-hours H2O2 production test in a flow-cell.
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Affiliation(s)
- Kai Sun
- School of Chemical Sciences, University of Auckland, Auckland, 1010, New Zealand
| | - Ruihu Lu
- School of Chemical Sciences, University of Auckland, Auckland, 1010, New Zealand
| | - Yuge Liu
- School of Chemical Sciences, University of Auckland, Auckland, 1010, New Zealand
| | - Joshua Webb
- School of Chemical Sciences, University of Auckland, Auckland, 1010, New Zealand
| | - Muhammad Hanif
- School of Chemical Sciences, University of Auckland, Auckland, 1010, New Zealand
| | - Yufei Zhao
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Ziyun Wang
- School of Chemical Sciences, University of Auckland, Auckland, 1010, New Zealand
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17
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Zeng Y, Tan X, Zhuang Z, Chen C, Peng Q. Nature-Inspired N, O Co-Coordinated Manganese Single-Atom Catalyst for Efficient Hydrogen Peroxide Electrosynthesis. Angew Chem Int Ed Engl 2025; 64:e202416715. [PMID: 39448377 DOI: 10.1002/anie.202416715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2024] [Revised: 10/16/2024] [Accepted: 10/21/2024] [Indexed: 10/26/2024]
Abstract
The two-electron oxygen reduction reaction (2e- ORR) is a pivotal pathway for the distributed production of hydrogen peroxide (H2O2). In nature, enzymes containing manganese (Mn) centers can convert reactive oxygen species into H2O2. However, Mn-based heterogeneous catalysts for 2e- ORR are scarcely reported. Herein, we developed a nature-inspired single-atom electrocatalyst comprising N, O co-coordinated Mn sites, utilizing carbon dots as the modulation platform (Mn CD/C). As-synthesized Mn CD/C exhibited exceptional 2e- ORR activity with an onset potential of 0.786 V and a maximum H2O2 selectivity of 95.8 %. Impressively, Mn CD/C continuously produced 0.1 M H2O2 solution at 200 mA/cm2 for 50 h in the flow cell, with negligible loss in activity and H2O2 faradaic efficiency, demonstrating practical application potential. The enhanced activity was attributed to the incorporation of Mn atomic sites into the carbon dots. Theoretical calculations revealed that the N, O co-coordinated structure, combined with abundant oxygen-containing functional groups on the carbon dots, optimized the binding strength of intermediate *OOH at the Mn sites to the apex of the catalytic activity volcano. This work illustrates that carbon dots can serve as a versatile platform for modulating the microenvironment of single-atom catalysts and for the rational design of nature-inspired catalysts.
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Affiliation(s)
- Yuan Zeng
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Xin Tan
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing, 100084, China
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Zewen Zhuang
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Chen Chen
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Qing Peng
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing, 100084, China
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18
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Wang X, Yi ZY, Wang YQ, Wang D. Molecular Evidence for the Axial Coordination Effect of Atomic Iodine on Fe-N 4 Sites in Oxygen Reduction Reaction. Angew Chem Int Ed Engl 2025; 64:e202413673. [PMID: 39278835 DOI: 10.1002/anie.202413673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2024] [Revised: 09/02/2024] [Accepted: 09/13/2024] [Indexed: 09/18/2024]
Abstract
We present a molecular-scale investigation of the axial coordination effect of atomic iodine on Fe-N4 sites in the oxygen reduction reaction (ORR) by electrochemical scanning tunneling microscopy (ECSTM). A well-defined model catalytic system with explicit and uniform iodine-coordinated Fe-N4 sites was constructed facilely by the self-assembly of iron(II) phthalocyanine (FePc) on an I-modified Au(111) surface. The electrocatalytic activity of FePc for the ORR shows notable enhancement with axial iodine ligands. The modulation of the electronic structure of Fe sites to evoke a higher spin configuration by axial iodine was evidenced. The interaction strength between oxygen-containing species and active centers becomes weaker due to the presence of iodine ligands, and the reaction is thermodynamically preferable. Furthermore, the reaction dynamics of FePc on I/Au(111) were explicitly determined via in situ ECSTM potential pulse experiments. In contrast, axial atomic iodine was found inefficacious for improving the activity of Co-N4 sites, and electron rearrangement was found to be marginal, demonstrating that adequate interactions between axial ligands and metal sites for optimizing electronic structures and catalytic behaviors are prerequisites for the impactful role of axial ligands.
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Affiliation(s)
- Xiang Wang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing, 100190, China
| | - Zhen-Yu Yi
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing, 100190, China
- University of Chinese Academy of Sciences, No.1 Yanqihu East Rd, Beijing, 101408, China
| | - Yu-Qi Wang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing, 100190, China
| | - Dong Wang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing, 100190, China
- University of Chinese Academy of Sciences, No.1 Yanqihu East Rd, Beijing, 101408, China
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19
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Wang Q, Feng J, Yang T, Qin Y, Xie J, Wei Z, Zhao S. Epoxidized Single-Atom Co-N-C Catalysts Promote the Oxygen Reduction Reaction via a Two-Electron Pathway. ACS APPLIED MATERIALS & INTERFACES 2024; 16:68221-68228. [PMID: 39586019 DOI: 10.1021/acsami.4c17354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2024]
Abstract
Coordination structure and group modifications of single-atom catalysts are essential for regulating superficial electronic structures and reaction activities. Epoxy group-modified single-atom Co-N-C configuration demonstrates exceptional catalytic performance for hydrogen peroxide production. Through the manipulation of the coordination structure of Co-N-C and the doped epoxy groups, we elucidate the origin of catalytic activity in epoxygroup-modified Co-N-C configurations. Theoretical results indicate that the second coordination sphere of the Co-N-C structure is essential for the regulation of the two-electron pathway by the epoxy groups acting as cocatalysts. This cocatalytic mechanism originates from hydrogen bonding interactions between the epoxy groups and the OOH intermediates. Three epoxy groups within the second coordination sphere of Co-N-C configuration lead to the achievement of the optimal G*OOH (∼4.22 eV) for hydrogen peroxide production. This study offers novel insights into the design of catalytic materials for the electrosynthesis of hydrogen peroxide as well as the engineering of their surface structures.
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Affiliation(s)
- Qian Wang
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology and School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Jingyu Feng
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology and School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Tao Yang
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology and School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Yao Qin
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology and School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Jiacheng Xie
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology and School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Zengxi Wei
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology and School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Shuangliang Zhao
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology and School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
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20
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Li Y, Luan D, Lou XWD. Engineering of Single-Atomic Sites for Electro- and Photo-Catalytic H 2O 2 Production. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2412386. [PMID: 39460391 DOI: 10.1002/adma.202412386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2024] [Revised: 09/25/2024] [Indexed: 10/28/2024]
Abstract
Direct electro- and photo-synthesis of H2O2 through the 2e- O2 reduction reaction (ORR) and H2O oxidation reaction (WOR) offer promising alternatives for on-demand and on-site production of this chemical. Exploring robust and selective active sites is crucial for enhancing H2O2 production through these pathways. Single-atom catalysts (SACs), featuring isolated active sites on supports, possess attractive properties for promoting catalysis and unraveling catalytic mechanisms. This review first systematically summarizes significant advancements in atomic engineering of both metal and nonmetal single-atom sites for electro- and photo-catalytic 2e- ORR to H2O2, as well as the dynamic behaviors of active sites during catalytic processes. Next, the progress of single-atom sites in H2O2 production through 2e- WOR is overviewed. The effects of the local physicochemical environments on the electronic structures and catalytic behaviors of isolated sites, along with the atomic catalytic mechanism involved in these H2O2 production pathways, are discussed in detail. This work also discusses the recent applications of H2O2 in advanced chemical transformations. Finally, a perspective on the development of single-atom catalysis is highlighted, aiming to provide insights into future research on SACs for electro- and photo-synthesis of H2O2 and other advanced catalytic applications.
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Affiliation(s)
- Yunxiang Li
- Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Deyan Luan
- Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Xiong Wen David Lou
- Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
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21
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Liu D, Wan X, Shui J. Tailoring Oxygen Reduction Reaction on M-N-C Catalysts via Axial Coordination Engineering. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2406078. [PMID: 39314019 DOI: 10.1002/smll.202406078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2024] [Revised: 09/13/2024] [Indexed: 09/25/2024]
Abstract
The development of fuel cells and metal-air batteries is an important link in realizing a sustainable energy supply and a green environment for the future. Oxygen reduction reaction (ORR) is the core reaction of such energy conversion devices. M-N-C catalysts exhibit encouraging ORR catalytic activity and are the most promising candidates for replacing Pt/C. The electrocatalytic performance of M-N-C catalysts is intimately related to the specific metal species and the coordination environment of the central metal atom. Axial coordination engineering presents an avenue for the development of highly active ORR catalysts and has seen considerable progress over the past decade. Nevertheless, the accurate control over the coordination environment and electronic structure of M-N-C catalysts at the atomic scale poses a big challenge. Herein, the diverse axial ligands, characterization techniques, and modulation mechanisms for axial coordination engineering are encompassed and discussed. Furthermore, some pressing matters to be solved and challenges that deserve to be explored and investigated in the future for axial coordination engineering are proposed.
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Affiliation(s)
- Dandan Liu
- Tianmushan Laboratory, Hangzhou, 310023, China
- School of Materials Science and Engineering, Beihang University, Beijing, 100191, China
| | - Xin Wan
- School of Materials Science and Engineering, Beihang University, Beijing, 100191, China
| | - Jianglan Shui
- Tianmushan Laboratory, Hangzhou, 310023, China
- School of Materials Science and Engineering, Beihang University, Beijing, 100191, China
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22
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Zhao D, Jiao D, Yi L, Yu Y, Zou J, Cui X, Hu W. Tandem Oxidation Activation of Carbon for Enhanced Electrochemical Synthesis of H 2O 2: Unveiling the Role of Quinone Groups and Their Operando Derivatives. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2406890. [PMID: 39301967 DOI: 10.1002/smll.202406890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2024] [Revised: 08/31/2024] [Indexed: 09/22/2024]
Abstract
Oxygen-doped carbon materials show great promise to catalyze two-electron oxygen reduction reaction (2e-ORR) for electrochemical synthesis of hydrogen peroxide (H2O2), but the identification of the active sites is the subject of ongoing debate. In this study, a tandem oxidation strategy is developed to activate carbon black for achieving highly efficient electrochemical synthesis of H2O2. Acetylene black (AB) is processed with O2 plasma and subsequent electrochemical oxidation, resulting in a remarkable selectivity of >96% over a wide potential range, and a record-setting high yield of >10 mol gcat -1 h-1 with good durability in gas diffusion electrode. Comprehensive characterizations and calculations revealed that the presence of abundant C═O groups at the edge sites positively correlated to and accounted for the excellent 2e-ORR performance. Notably, the edge hydroquinone group formed from quinone under operando conditions, which is overlooked in previous research, is identified as the most active catalytic site.
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Affiliation(s)
- Dantong Zhao
- School of Materials and Energy, Chongqing Key Laboratory of Battery Materials and Technology, Southwest University, Chongqing, 400715, P. R. China
| | - Dongxu Jiao
- State Key Laboratory of Automotive Simulation and Control, School of Materials Science and Engineering, Key Laboratory of Automobile Materials of MOE, Jilin University, Changchun, 130012, P. R. China
| | - Lingya Yi
- School of Materials and Energy, Chongqing Key Laboratory of Battery Materials and Technology, Southwest University, Chongqing, 400715, P. R. China
| | - Yang Yu
- School of Materials and Energy, Chongqing Key Laboratory of Battery Materials and Technology, Southwest University, Chongqing, 400715, P. R. China
| | - Jiajia Zou
- School of Materials and Energy, Chongqing Key Laboratory of Battery Materials and Technology, Southwest University, Chongqing, 400715, P. R. China
| | - Xiaoqiang Cui
- State Key Laboratory of Automotive Simulation and Control, School of Materials Science and Engineering, Key Laboratory of Automobile Materials of MOE, Jilin University, Changchun, 130012, P. R. China
| | - Weihua Hu
- School of Materials and Energy, Chongqing Key Laboratory of Battery Materials and Technology, Southwest University, Chongqing, 400715, P. R. China
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23
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Bu Y, Ma R, Wang Y, Zhao Y, Li F, Han GF, Baek JB. Metal-Based Oxygen Reduction Electrocatalysts for Efficient Hydrogen Peroxide Production. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2412670. [PMID: 39449208 DOI: 10.1002/adma.202412670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2024] [Revised: 10/09/2024] [Indexed: 10/26/2024]
Abstract
Hydrogen peroxide (H2O2) is a high-value chemical widely used in electronics, textiles, paper bleaching, medical disinfection, and wastewater treatment. Traditional production methods, such as the anthraquinone oxidation process and direct synthesis, require high energy consumption, and involve risks from toxic substances and explosions. Researchers are now exploring photochemical, electrochemical, and photoelectrochemical synthesis methods to reduce energy use and pollution. This review focuses on the 2-electron oxygen reduction reaction (2e- ORR) for the electrochemical synthesis of H2O2, and discusses how catalyst active sites influence O2 adsorption. Strategies to enhance H2O2 selectivity by regulating these sites are presented. Catalysts require strong O2 adsorption to initiate reactions and weak *OOH adsorption to promote H2O2 formation. The review also covers advances in single-atom catalysts (SACs), multi-metal-based catalysts, and highlights non-noble metal oxides, especially perovskite oxides, for their versatile structures and potential in 2e- ORR. The potential of localized surface plasmon resonance (LSPR) effects to enhance catalyst performance is also discussed. In conclusion, emphasis is placed on optimizing catalyst structures through theoretical and experimental methods to achieve efficient and selective H2O2 production, aiming for sustainable and commercial applications.
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Affiliation(s)
- Yunfei Bu
- UNIST-NUIST Environment and Energy Jointed Lab, (UNNU), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Technology, Nanjing University of Information Science and Technology (NUIST), Nanjing, 210044, P. R. China
| | - Rong Ma
- UNIST-NUIST Environment and Energy Jointed Lab, (UNNU), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Technology, Nanjing University of Information Science and Technology (NUIST), Nanjing, 210044, P. R. China
| | - Yaobin Wang
- UNIST-NUIST Environment and Energy Jointed Lab, (UNNU), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Technology, Nanjing University of Information Science and Technology (NUIST), Nanjing, 210044, P. R. China
| | - Yunxia Zhao
- UNIST-NUIST Environment and Energy Jointed Lab, (UNNU), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Technology, Nanjing University of Information Science and Technology (NUIST), Nanjing, 210044, P. R. China
| | - Feng Li
- Laboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, 220 Handan, Shanghai, 200433, P. R. China
| | - Gao-Feng Han
- Key Laboratory of Automobile Materials, Ministry of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130012, P. R. China
| | - Jong-Beom Baek
- School of Energy and Chemical Engineering/Center for Dimension Controllable Organic Frameworks, Ulsan National Institute of Science and Technology, 50 UNIST, Ulsan, 44919, South Korea
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24
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Yuan R, Zhao J, Chen X, Qiu X, Wang X. Inhibiting carbon corrosion of cobalt-nitrogen-carbon materials via Mn sites for highly durable oxygen reduction reaction in acidic media. J Colloid Interface Sci 2024; 680:712-722. [PMID: 39580923 DOI: 10.1016/j.jcis.2024.11.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2024] [Revised: 10/24/2024] [Accepted: 11/16/2024] [Indexed: 11/26/2024]
Abstract
Cobalt-nitrogen-carbon (CoNxC) materials are regarded as promising low-cost electrocatalysts for the oxygen reduction reaction (ORR). However, their susceptibility to deactivation and poor stability in acidic media limits their practical applications. In this study, we develop cobalt (Co) and manganese (Mn) embedded in nitrogen-doped carbon (CoMnNxC) dual-site catalysts by incorporating Mn into CoNxC and leverage a synergistic dual-catalysis strategy to optimize both activity and stability. The dynamic evolution of *OOH intermediate on the catalyst surface is monitored via in situ Raman spectroscopy, confirming that Mn introduction modulates the reaction pathway. Due to electron transfer from Mn to the Co-Nx center in CoMnNxC, *OOH activation on the surface is enhanced, and the two-electron ORR process is inhibited. Consequently, the CoMnNxC catalyst exhibits excellent ORR activity (E1/2 = 0.76 V vs. reversible hydrogen electrode) and a very low hydrogen peroxide (H2O2) yield (<2.9 %) in acidic electrolyte. Additionally, the dynamic evolution of *OH on the Mn-Nx site confirms that Mn-Nx can serve as a potential catalytic site for the hydrogen peroxide reduction reaction (HPRR), facilitating H2O2 decomposition. Differential electrochemical mass spectrometry (DEMS) demonstrates that this parallel catalytic pathway effectively weaks the oxidative corrosion of H2O2 on the carbon carrier. The results indicate that the negative half-wave potential shift of CoMnNxC catalysts in acidic electrolyte after 10,000 accelerated durability tests (ADT) is only 11 mV. The synergistic dual-catalytic strategy proposed in this work offers a novel approach for designing high-efficiency and stable transition metal-nitrogen-carbon catalysts.
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Affiliation(s)
- Ruipeng Yuan
- College of Materials Science and Engineering, Taiyuan University of Technology, 030024, PR China
| | - Jinyu Zhao
- College of Materials Science and Engineering, Taiyuan University of Technology, 030024, PR China
| | - Xu Chen
- College of Materials Science and Engineering, Taiyuan University of Technology, 030024, PR China
| | - Xiaoming Qiu
- College of Materials Science and Engineering, Taiyuan University of Technology, 030024, PR China; Shanxi Key Laboratory of Energy Storage Material Innovation and Integration, PR China
| | - Xiaomin Wang
- College of Materials Science and Engineering, Taiyuan University of Technology, 030024, PR China; Shanxi Key Laboratory of Energy Storage Material Innovation and Integration, PR China.
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25
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Zhang MD, Huang JR, Liang CP, Chen XM, Liao PQ. Continuous Electrosynthesis of Pure H 2O 2 Solution with Medical-Grade Concentration by a Conductive Ni-Phthalocyanine-Based Covalent Organic Framework. J Am Chem Soc 2024; 146:31034-31041. [PMID: 39495344 DOI: 10.1021/jacs.4c10675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2024]
Abstract
Electrosynthesis of H2O2 provides an environmentally friendly alternative to the traditional anthraquinone method employed in industry, but suffers from impurities and restricted yield rate and concentration of H2O2. Herein, we demonstrated a Ni-phthalocyanine-based covalent-organic framework (COF, denoted as BBL-PcNi) with a higher inherent conductivity of 1.14 × 10-5 S m-1, which exhibited an ultrahigh current density of 530 mA cm-2 with a Faradaic efficiency (H2O2) of ∼100% at a low cell voltage of 3.5 V. Notably, this high level of performance is maintained over a continuous operation of 200 h without noticeable degradation. When integrated into a scale-up membrane electrode assembly electrolyzer and operated at ∼3300 mA at a very low cell voltage of 2 V, BBL-PcNi continuously yielded a pure H2O2 solution with medical-grade concentration (3.5 wt %), which is at least 3.5 times higher than previously reported catalysts and 1.5 times the output of the traditional anthraquinone process. A mechanistic study revealed that enhancing the π-conjugation to reduce the band gap of the molecular catalytic sites integrated into a COF is more effective to enhance its inherent electron transport ability, thereby significantly improving the electrocatalytic performance for H2O2 generation.
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Affiliation(s)
- Meng-Di Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jia-Run Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou 510275, China
| | - Cheng-Peng Liang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou 510275, China
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou 515021, China
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou 510275, China
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26
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Kment Š, Bakandritsos A, Tantis I, Kmentová H, Zuo Y, Henrotte O, Naldoni A, Otyepka M, Varma RS, Zbořil R. Single Atom Catalysts Based on Earth-Abundant Metals for Energy-Related Applications. Chem Rev 2024; 124:11767-11847. [PMID: 38967551 PMCID: PMC11565580 DOI: 10.1021/acs.chemrev.4c00155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 06/05/2024] [Accepted: 06/18/2024] [Indexed: 07/06/2024]
Abstract
Anthropogenic activities related to population growth, economic development, technological advances, and changes in lifestyle and climate patterns result in a continuous increase in energy consumption. At the same time, the rare metal elements frequently deployed as catalysts in energy related processes are not only costly in view of their low natural abundance, but their availability is often further limited due to geopolitical reasons. Thus, electrochemical energy storage and conversion with earth-abundant metals, mainly in the form of single-atom catalysts (SACs), are highly relevant and timely technologies. In this review the application of earth-abundant SACs in electrochemical energy storage and electrocatalytic conversion of chemicals to fuels or products with high energy content is discussed. The oxygen reduction reaction is also appraised, which is primarily harnessed in fuel cell technologies and metal-air batteries. The coordination, active sites, and mechanistic aspects of transition metal SACs are analyzed for two-electron and four-electron reaction pathways. Further, the electrochemical water splitting with SACs toward green hydrogen fuel is discussed in terms of not only hydrogen evolution reaction but also oxygen evolution reaction. Similarly, the production of ammonia as a clean fuel via electrocatalytic nitrogen reduction reaction is portrayed, highlighting the potential of earth-abundant single metal species.
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Affiliation(s)
- Štĕpán Kment
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, Palacký University, Křížkovského
511/8, 779 00 Olomouc, Czech Republic
- Nanotechnology
Centre, Centre for Energy and Environmental Technologies, VŠB − Technical University of Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
| | - Aristides Bakandritsos
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, Palacký University, Křížkovského
511/8, 779 00 Olomouc, Czech Republic
- Nanotechnology
Centre, Centre for Energy and Environmental Technologies, VŠB − Technical University of Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
| | - Iosif Tantis
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, Palacký University, Křížkovského
511/8, 779 00 Olomouc, Czech Republic
| | - Hana Kmentová
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, Palacký University, Křížkovského
511/8, 779 00 Olomouc, Czech Republic
| | - Yunpeng Zuo
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, Palacký University, Křížkovského
511/8, 779 00 Olomouc, Czech Republic
| | - Olivier Henrotte
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, Palacký University, Křížkovského
511/8, 779 00 Olomouc, Czech Republic
| | - Alberto Naldoni
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, Palacký University, Křížkovského
511/8, 779 00 Olomouc, Czech Republic
- Department
of Chemistry and NIS Centre, University
of Turin, Turin, Italy 10125
| | - Michal Otyepka
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, Palacký University, Křížkovského
511/8, 779 00 Olomouc, Czech Republic
- IT4Innovations, VŠB − Technical University of Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
| | - Rajender S. Varma
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, Palacký University, Křížkovského
511/8, 779 00 Olomouc, Czech Republic
| | - Radek Zbořil
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, Palacký University, Křížkovského
511/8, 779 00 Olomouc, Czech Republic
- Nanotechnology
Centre, Centre for Energy and Environmental Technologies, VŠB − Technical University of Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
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27
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Chao J, Yang X, Zhu Y, Shen J. Oxygen doping regulation of Co single atom catalysts for electro-Fenton degradation of tetracycline. J Colloid Interface Sci 2024; 673:434-443. [PMID: 38878377 DOI: 10.1016/j.jcis.2024.06.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 06/02/2024] [Accepted: 06/05/2024] [Indexed: 07/26/2024]
Abstract
Electro-Fenton is an effective process for degrading hard-to-degrade organic pollutants, such as tetracycline (TC). However, the degradation efficiency of this process is limited by the activity and stability of the cathode catalyst. Herein, a temperature gradient pyrolysis strategy and oxidation treatment is proposed to modulate the coordination environment to prepare oxygen-doped cobalt monoatomic electrocatalysts (CoNOC). The CoNOC catalysts can achieve the selectivity of 93 % for H2O2 with an electron transfer number close to 2. In the H-cell, the prepared electrocatalysts can achieve more than 100 h of H2O2 production with good stability and the yield of 1.41 mol gcatalyst-1 h-1 with an average Faraday efficiency (FE) of more than 88 %. The calculations indicate that the epoxy groups play a crucial role in modulating the oxygen reduction pathway. The O doping and unique N coordination of Co single-atom active sites (CoN(Pd)3N(Po)1O1) can effectively weaken the O2/OOH* interaction, thereby promoting the production of H2O2. Finally, the electro-Fenton system could achieve a TC degradation rate of 94.9 % for 120 min with a mineralization efficiency of 87.8 % for 180 min, which provides a reliable option for antibiotic treatment. The significant involvement of OH in the electro-Fenton process was confirmed, and the plausible mineralization pathway for TC was proposed.
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Affiliation(s)
- Jiayu Chao
- Shanghai Engineering Research Centre of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xiaoling Yang
- Shanghai Engineering Research Centre of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yihua Zhu
- Shanghai Engineering Research Centre of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Jianhua Shen
- Shanghai Engineering Research Centre of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
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28
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Chen H, Chen R, Liu S, Zhou Y, Chen X, Cai J, Lan X, Jiang H, Lin L, Sun Z. Efficient H 2O 2 Synthesis Through a Two-Electron Oxygen Reduction Reaction by Electrocatalysts. Chempluschem 2024; 89:e202400422. [PMID: 39012587 DOI: 10.1002/cplu.202400422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Revised: 07/15/2024] [Accepted: 07/16/2024] [Indexed: 07/17/2024]
Abstract
The two-electron oxygen reduction reaction (2e-ORR) for the sustainable synthesis of hydrogen peroxide (H2O2) has demonstrated considerable potential for local production of this environmentally friendly chemical oxidant on small, medium, and large scales. This method offers a promising alternative to the energy-intensive anthraquinone approach, placing a primary emphasis on the development of efficient electrocatalysts. Improving the efficiency of electrocatalysts and uncovering their catalytic mechanisms are essential steps in achieving high 2e-ORR activity, selectivity, and stability. This comprehensive review summarizes recent advancements in electrocatalysts for in-situ H2O2 production, providing a detailed overview of the field. In particular, the review delves into the design, fabrication, and investigation of catalytic active sites contributing to H2O2 selectivity. Additionally, it highlights a range of electrocatalysts including pure metals and alloys, transition metal compounds, single-atom catalysts, and carbon-based catalysts for the 2e-ORR pathway. Finally, the review addresses significant challenges and opportunities for efficient H2O2 electrosynthesis, as well as potential future research directions.
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Affiliation(s)
- Huatian Chen
- Center for Advanced Materials Research & College of Arts and Sciences, Beijing Normal University, Zhuhai, 519087, China
| | - Runxuan Chen
- Center for Advanced Materials Research & College of Arts and Sciences, Beijing Normal University, Zhuhai, 519087, China
| | - Sha Liu
- Center for Advanced Materials Research & College of Arts and Sciences, Beijing Normal University, Zhuhai, 519087, China
| | - Yanhong Zhou
- Center for Advanced Materials Research & College of Arts and Sciences, Beijing Normal University, Zhuhai, 519087, China
| | - Xinyu Chen
- Center for Advanced Materials Research & College of Arts and Sciences, Beijing Normal University, Zhuhai, 519087, China
| | - Jiajin Cai
- Center for Advanced Materials Research & College of Arts and Sciences, Beijing Normal University, Zhuhai, 519087, China
| | - Xiyue Lan
- Center for Advanced Materials Research & College of Arts and Sciences, Beijing Normal University, Zhuhai, 519087, China
| | - Haomin Jiang
- Center for Advanced Materials Research & College of Arts and Sciences, Beijing Normal University, Zhuhai, 519087, China
- Beijing Key Laboratory of Energy Conversion and Storage Materials Institution, College of Chemistry, Beijing Normal University, Beijing, 100091, China
| | - Liu Lin
- Center for Advanced Materials Research & College of Arts and Sciences, Beijing Normal University, Zhuhai, 519087, China
| | - Zemin Sun
- Center for Advanced Materials Research & College of Arts and Sciences, Beijing Normal University, Zhuhai, 519087, China
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29
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Liu Y, Wu Z, Gu C, Chen J, Zhu Y, Wang L. Curved Structure Regulated Single Metal Sites for Advanced Electrocatalytic Reactions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2404758. [PMID: 39140281 DOI: 10.1002/smll.202404758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Revised: 08/07/2024] [Indexed: 08/15/2024]
Abstract
Curved surface with defined local electronic structures and regulated surface microenvironments is significant for advanced catalytic engineering. Since single-atom catalysts are highly efficient and active, they have attracted much attention in recent years. The curvature carrier has a significant effect on the electronic structure regulation of single-atom sites, which effectively promote the catalytic efficiency. Here, the effect of the curvature structure with exposed metal atoms for catalysis is comprehensively summarized. First, the substrates with curvature features are reviewed. Second, the applications of single-atom catalysts containing curvature in a variety of different electrocatalytic reactions are discussed in depth. The impact of curvature effects in catalytic reactions is further analyzed. Finally, prospects and suggestions for their application and future development are presented. This review paves the way for the construction of high curvature-containing surface carriers, which is of great significance for single-atom catalysts development.
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Affiliation(s)
- Yang Liu
- College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NJUPT), 9 Wenyuan, Nanjing, 210023, P. R. China
| | - Zefei Wu
- College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NJUPT), 9 Wenyuan, Nanjing, 210023, P. R. China
| | - Chen Gu
- College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NJUPT), 9 Wenyuan, Nanjing, 210023, P. R. China
| | - Jianmei Chen
- College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NJUPT), 9 Wenyuan, Nanjing, 210023, P. R. China
| | - Yanwei Zhu
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, 410082, P. R. China
| | - Longlu Wang
- College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NJUPT), 9 Wenyuan, Nanjing, 210023, P. R. China
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30
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Wu H, Li L, Chen H, Xing Y, Wang Z, Zhang C, Long X. Topology Control of Covalent Organic Frameworks with Interlaced Unsaturated 2D and Saturated 3D Units for Boosting Electrocatalytic Hydrogen Peroxide Production. Angew Chem Int Ed Engl 2024; 63:e202410719. [PMID: 38943313 DOI: 10.1002/anie.202410719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Revised: 06/27/2024] [Accepted: 06/28/2024] [Indexed: 07/01/2024]
Abstract
Modulating the electronic state of multicomponent covalent organic framework (COF) electrocatalysts is crucial for enhancing catalytic activity. However, the effect of dimensionality on their physicochemical functionalities is still lacking. Herein, we report an interlaced unsaturated 2D and saturated 3D strategy to develop multicomponent-regulated COFs with tunable gradient dimensionality for high selectivity and activity electrocatalysis. Compared with the two-component 2D and 3D model COFs, the 2D/3D framework interlaced COFs with locally irregular dimensions and electronic structures are more practical in optimizing the intrinsic electrode surface reaction and mass transfer. Remarkably, the unsaturated 2D-inserted 3D TAE-COF regulates the adsorption mode of OOH* species to supply a favorable dynamic pathway for the H2O2 process, thereby achieving an excellent production rate of 8.50 mol gcat -1 h-1. Moreover, utilizing theoretical calculation and in situ ATR-FTIR experiment, we found that the central carbon atom of the tetraphenyl-based unit (site-1 and site-6) are potential active sites. This strategy of operating the adsorption ability of reactants with dimensionality-interconnected building blocks provides an idea for designing durable and efficient electrocatalysts.
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Affiliation(s)
- Han Wu
- State Key Laboratory of Bio-fibers and Eco-textiles, Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Lili Li
- State Key Laboratory of Bio-fibers and Eco-textiles, Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Hongni Chen
- State Key Laboratory of Bio-fibers and Eco-textiles, Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Yali Xing
- State Key Laboratory of Bio-fibers and Eco-textiles, Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Zhong Wang
- State Key Laboratory of Bio-fibers and Eco-textiles, Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, P. R. China
| | - Chuanhui Zhang
- State Key Laboratory of Bio-fibers and Eco-textiles, Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Xiaojing Long
- State Key Laboratory of Bio-fibers and Eco-textiles, Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
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31
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Zhao L, Yan R, Mao B, Paul R, Duan W, Dai L, Hu C. Advanced Nanocarbons Toward two-Electron Oxygen Electrode Reactions for H 2O 2 Production and Integrated Energy Conversion. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2403029. [PMID: 38966884 DOI: 10.1002/smll.202403029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 06/20/2024] [Indexed: 07/06/2024]
Abstract
Hydrogen peroxide (H2O2) plays a pivotal role in advancing sustainable technologies due to its eco-friendly oxidizing capability. The electrochemical two-electron (2e-) oxygen reduction reaction and water oxidation reaction present an environmentally green method for H2O2 production. Over the past three years, significant progress is made in the field of carbon-based metal-free electrochemical catalysts (C-MFECs) for low-cost and efficient production of H2O2 (H2O2EP). This article offers a focused and comprehensive review of designing C-MFECs for H2O2EP, exploring the construction of dual-doping configurations, heteroatom-defect coupling sites, and strategic dopant positioning to enhance H2O2EP efficiency; innovative structural tuning that improves interfacial reactant concentration and promote the timely release of H2O2; modulation of electrolyte and electrode interfaces to support the 2e- pathways; and the application of C-MFECs in reactors and integrated energy systems. Finally, the current challenges and future directions in this burgeoning field are discussed.
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Affiliation(s)
- Linjie Zhao
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Riqing Yan
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Baoguang Mao
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Rajib Paul
- Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH, 44242, USA
| | - Wenjie Duan
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Liming Dai
- Australian Carbon Materials Centre (A-CMC), School of Chemical Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Chuangang Hu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
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32
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Zhu J, Lu XF, Luan D, Lou XWD. Metal-Organic Frameworks Derived Carbon-Supported Metal Electrocatalysts for Energy-Related Reduction Reactions. Angew Chem Int Ed Engl 2024; 63:e202408846. [PMID: 39031731 DOI: 10.1002/anie.202408846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 06/20/2024] [Accepted: 06/20/2024] [Indexed: 07/22/2024]
Abstract
Electrochemical reduction reactions, as cathodic processes in many energy-related devices, significantly impact the overall efficiency determined mainly by the performance of electrocatalysts. Metal-organic frameworks (MOFs) derived carbon-supported metal materials have become one of star electrocatalysts due to their tunable structure and composition through ligand design and metal screening. However, for different electroreduction reactions, the required active metal species vary in phase component, electronic state, and catalytic center configuration, hence requiring effective customization. From this perspective, this review comprehensively analyzes the structural design principles, metal loading strategies, practical electroreduction performance, and complex catalytic mechanisms, thereby providing insights and guidance for the future rational design of such electroreduction catalysts.
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Affiliation(s)
- Jiawei Zhu
- Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
- Hong Kong Branch of National Precious Metals Material Engineering Research Center, City University of Hong Kong, Hong Kong, 999077, China
| | - Xue Feng Lu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Deyan Luan
- Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Xiong Wen David Lou
- Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
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33
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Guo Q, Yuan R, Zhao Y, Yu Y, Fu J, Cao L. Performance of Nitrogen-Doped Carbon Nanoparticles Carrying FeNiCu as Bifunctional Electrocatalyst for Rechargeable Zinc-Air Battery. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2400830. [PMID: 38778739 DOI: 10.1002/smll.202400830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 05/12/2024] [Indexed: 05/25/2024]
Abstract
Catalysts for zinc-air batteries (ZABs) must be stable over long-term charging-discharging cycles and exhibit bifunctional catalytic activity. In this study, by doping nitrogen-doped carbon (NC) materials with three metal atoms (Fe, Ni, and Cu), a single-atom-distributed FeNiCu-NC bifunctional catalyst is prepared. The catalyst includes Fe(Ni-doped)-N4 for the oxygen evolution reaction (OER), Fe(Cu-doped)-N4 for the oxygen reduction reaction (ORR), and the NiCu-NC catalytic structure for the oxygen reduction reaction (ORR) in the nitrogen-doped carbon nanoparticles. This single-atom distribution catalyst structure enhances the bifunctional catalytic activity. If a trimetallic single-atom catalyst is designed, it will surpass the typical bimetallic single-atom catcalyst. FeNiCu-NC exhibits outstanding performance as an electrocatalyst, with a half-wave potential (E1/2) of 0.876 V versus RHE, overpotential (Ej = 10) of 253 mV versus RHE at 10 mA cm-2, and a small potential gap (ΔE = 0.61 V). As the anode in a ZAB, FeNiCu-NC can undergo continuous charge-discharged cycles for 575 h without significant attenuation. This study presents a new method for achieving high-performance, low-cost ZABs via trimetallic single-atom doping.
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Affiliation(s)
- Qiao Guo
- Institute of Material Science and Engineering, Dalian Jiaotong University, Dalian, 116028, China
| | - Rui Yuan
- Fuel Cell System and Engineering Laboratory, Key Laboratory of Fuel Cells & Hybrid Power Sources, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Yutong Zhao
- Fuel Cell System and Engineering Laboratory, Key Laboratory of Fuel Cells & Hybrid Power Sources, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Ying Yu
- Fuel Cell System and Engineering Laboratory, Key Laboratory of Fuel Cells & Hybrid Power Sources, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Jie Fu
- Institute of Material Science and Engineering, Dalian Jiaotong University, Dalian, 116028, China
| | - Longsheng Cao
- Fuel Cell System and Engineering Laboratory, Key Laboratory of Fuel Cells & Hybrid Power Sources, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
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Lim JS, Woo J, Bae G, Yoo S, Kim J, Kim JH, Lee JH, Sa YJ, Jang JW, Hwang YJ, Choi CH, Joo SH. Understanding the preparative chemistry of atomically dispersed nickel catalysts for achieving high-efficiency H 2O 2 electrosynthesis. Chem Sci 2024; 15:13807-13822. [PMID: 39211491 PMCID: PMC11352581 DOI: 10.1039/d4sc03105a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2024] [Accepted: 07/25/2024] [Indexed: 09/04/2024] Open
Abstract
Electrochemical hydrogen peroxide (H2O2) production via two-electron oxygen reduction reaction (2e- ORR) has received increasing attention as it enables clean, sustainable, and on-site H2O2 production. Mimicking the active site structure of H2O2 production enzymes, such as nickel superoxide dismutase, is the most intuitive way to design efficient 2e- ORR electrocatalysts. However, Ni-based catalysts have thus far shown relatively low 2e- ORR activity. In this work, we present the design of high-performing, atomically dispersed Ni-based catalysts (Ni ADCs) for H2O2 production through understanding the formation chemistry of the Ni-based active sites. The use of a precoordinated precursor and pyrolysis within a confined nanospace were found to be essential for generating active Ni-N x sites in high density and increasing carbon yields, respectively. A series of model catalysts prepared from coordinating solvents having different vapor pressures gave rise to Ni ADCs with controlled ratios of Ni-N x sites and Ni nanoparticles, which revealed that the Ni-N x sites have greater 2e- ORR activity. Another set of Ni ADCs identified the important role of the degree of distortion from the square planar structure in H2O2 electrosynthesis activity. The optimized catalyst exhibited a record H2O2 electrosynthesis mass activity with excellent H2O2 selectivity.
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Affiliation(s)
- June Sung Lim
- Department of Chemistry, Seoul National University Seoul 08826 Republic of Korea
| | - Jinwoo Woo
- Lotte Chemical Institute of Technology (LCIT) Daejeon 34110 Republic of Korea
| | - Geunsu Bae
- Department of Chemistry, Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Suhwan Yoo
- Department of Chemistry, Seoul National University Seoul 08826 Republic of Korea
| | - Jinjong Kim
- Department of Chemistry, Seoul National University Seoul 08826 Republic of Korea
| | - Jae Hyung Kim
- Clean Fuel Research Laboratory, Korea Institute of Energy Research (KIER) Daejeon 34129 Republic of Korea
| | - Jong Hoon Lee
- UNIST Central Research Facilities, Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea
| | - Young Jin Sa
- Department of Chemistry, Kwangwoon University Seoul 01897 Republic of Korea
| | - Ji-Wook Jang
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea
| | - Yun Jeong Hwang
- Department of Chemistry, Seoul National University Seoul 08826 Republic of Korea
| | - Chang Hyuck Choi
- Department of Chemistry, Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
- Institute for Convergence Research and Education in Advanced Technology (I-CREATE), Yonsei University Seoul 03722 Republic of Korea
| | - Sang Hoon Joo
- Department of Chemistry, Seoul National University Seoul 08826 Republic of Korea
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35
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Zhang H, Xu H, Yao C, Chen S, Li F, Zhao D. Metal Atom-Support Interaction in Single Atom Catalysts toward Hydrogen Peroxide Electrosynthesis. ACS NANO 2024; 18:21836-21854. [PMID: 39108203 DOI: 10.1021/acsnano.4c07916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/21/2024]
Abstract
Single metal atom catalysts (SACs) have garnered considerable attention as promising agents for catalyzing important industrial reactions, particularly the electrochemical synthesis of hydrogen peroxide (H2O2) through the two-electron oxygen reduction reaction (ORR). Within this field, the metal atom-support interaction (MASI) assumes a decisive role, profoundly influencing the catalytic activity and selectivity exhibited by SACs, and triggers a decade-long surge dedicated to unraveling the modulation of MASI as a means to enhance the catalytic performance of SACs. In this comprehensive review, we present a systematic summary and categorization of recent advancements pertaining to MASI modulation for achieving efficient electrochemical H2O2 synthesis. We start by introducing the fundamental concept of the MASI, followed by a detailed and comprehensive analysis of the correlation between the MASI and catalytic performance. We describe how this knowledge can be harnessed to design SACs with optimized MASI to increase the efficiency of H2O2 electrosynthesis. Finally, we distill the challenges that lay ahead in this field and provide a forward-looking perspective on the future research directions that can be pursued.
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Affiliation(s)
- Hao Zhang
- Laboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China
| | - Haitao Xu
- Laboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China
| | - Canglang Yao
- Laboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China
| | - Shanshan Chen
- MOE Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, School of Energy & Power Engineering, Chongqing University, Chongqing 400044, P. R. China
| | - Feng Li
- Laboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China
| | - Dongyuan Zhao
- Laboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China
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36
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Deng Z, Choi SJ, Li G, Wang X. Advancing H 2O 2 electrosynthesis: enhancing electrochemical systems, unveiling emerging applications, and seizing opportunities. Chem Soc Rev 2024; 53:8137-8181. [PMID: 39021095 DOI: 10.1039/d4cs00412d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
Hydrogen peroxide (H2O2) is a highly desired chemical with a wide range of applications. Recent advancements in H2O2 synthesis center on the electrochemical reduction of oxygen, an environmentally friendly approach that facilitates on-site production. To successfully implement practical-scale, highly efficient electrosynthesis of H2O2, it is critical to meticulously explore both the design of catalytic materials and the engineering of other components of the electrochemical system, as they hold equal importance in this process. Development of promising electrocatalysts with outstanding selectivity and activity is a prerequisite for efficient H2O2 electrosynthesis, while well-configured electrolyzers determine the practical implementation of large-scale H2O2 production. In this review, we systematically summarize fundamental mechanisms and recent achievements in H2O2 electrosynthesis, including electrocatalyst design, electrode optimization, electrolyte engineering, reactor exploration, potential applications, and integrated systems, with an emphasis on active site identification and microenvironment regulation. This review also proposes new insights into the existing challenges and opportunities within this rapidly evolving field, together with perspectives on future development of H2O2 electrosynthesis and its industrial-scale applications.
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Affiliation(s)
- Zhiping Deng
- Department of Chemical and Materials Engineering, University of Alberta, 9211-116 Street NW, Edmonton, Alberta T6G 1H9, Canada.
| | - Seung Joon Choi
- Department of Mechanical Engineering, University of Alberta, 9211-116 Street NW, Edmonton, Alberta T6G 1H9, Canada.
| | - Ge Li
- Department of Mechanical Engineering, University of Alberta, 9211-116 Street NW, Edmonton, Alberta T6G 1H9, Canada.
| | - Xiaolei Wang
- Department of Chemical and Materials Engineering, University of Alberta, 9211-116 Street NW, Edmonton, Alberta T6G 1H9, Canada.
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37
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Levell Z, Le J, Yu S, Wang R, Ethirajan S, Rana R, Kulkarni A, Resasco J, Lu D, Cheng J, Liu Y. Emerging Atomistic Modeling Methods for Heterogeneous Electrocatalysis. Chem Rev 2024; 124:8620-8656. [PMID: 38990563 DOI: 10.1021/acs.chemrev.3c00735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
Heterogeneous electrocatalysis lies at the center of various technologies that could help enable a sustainable future. However, its complexity makes it challenging to accurately and efficiently model at an atomic level. Here, we review emerging atomistic methods to simulate the electrocatalytic interface with special attention devoted to the components/effects that have been challenging to model, such as solvation, electrolyte ions, electrode potential, reaction kinetics, and pH. Additionally, we review relevant computational spectroscopy methods. Then, we showcase several examples of applying these methods to understand and design catalysts relevant to green hydrogen. We also offer experimental views on how to bridge the gap between theory and experiments. Finally, we provide some perspectives on opportunities to advance the field.
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Affiliation(s)
- Zachary Levell
- Texas Materials Institute and Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Jiabo Le
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo 315201, China
| | - Saerom Yu
- Texas Materials Institute and Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Ruoyu Wang
- Texas Materials Institute and Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Sudheesh Ethirajan
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Rachita Rana
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Ambarish Kulkarni
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Joaquin Resasco
- Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Deyu Lu
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Jun Cheng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Laboratory of AI for Electrochemistry (AI4EC), Tan Kah Kee Innovation Laboratory, Xiamen 361005, China
| | - Yuanyue Liu
- Texas Materials Institute and Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
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38
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Choi JS, Fortunato GV, Jung DC, Lourenço JC, Lanza MRV, Ledendecker M. Catalyst durability in electrocatalytic H 2O 2 production: key factors and challenges. NANOSCALE HORIZONS 2024; 9:1250-1261. [PMID: 38847073 DOI: 10.1039/d4nh00109e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
On-demand electrocatalytic hydrogen peroxide (H2O2) production is a significant technological advancement that offers a promising alternative to the traditional anthraquinone process. This approach leverages electrocatalysts for the selective reduction of oxygen through a two-electron transfer mechanism (ORR-2e-), holding great promise for delivering a sustainable and economically efficient means of H2O2 production. However, the harsh operating conditions during the electrochemical H2O2 production lead to the degradation of both structural integrity and catalytic efficacy in these materials. Here, we systematically examine the design strategies and materials typically utilized in the electroproduction of H2O2 in acidic environments. We delve into the prevalent reactor conditions and scrutinize the factors contributing to catalyst deactivation. Additionally, we propose standardised benchmarking protocols aimed at evaluating catalyst stability under such rigorous conditions. To this end, we advocate for the adoption of three distinct accelerated stress tests to comprehensively assess catalyst performance and durability.
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Affiliation(s)
- Ji Sik Choi
- Department of Technical Chemistry, Technical University of Darmstadt, Peter-Grünberg-Straße 8, 64287 Darmstadt, Germany.
- Sustainable Energy Materials, Technical University Munich, Campus Straubing, Schulgasse 22, 94315 Straubing, Germany.
| | - Guilherme V Fortunato
- Department of Technical Chemistry, Technical University of Darmstadt, Peter-Grünberg-Straße 8, 64287 Darmstadt, Germany.
- Sustainable Energy Materials, Technical University Munich, Campus Straubing, Schulgasse 22, 94315 Straubing, Germany.
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São-Carlense 400, São Carlos, SP 13566-590, Brazil
| | - Daniele C Jung
- Department of Technical Chemistry, Technical University of Darmstadt, Peter-Grünberg-Straße 8, 64287 Darmstadt, Germany.
| | - Julio C Lourenço
- Sustainable Energy Materials, Technical University Munich, Campus Straubing, Schulgasse 22, 94315 Straubing, Germany.
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São-Carlense 400, São Carlos, SP 13566-590, Brazil
| | - Marcos R V Lanza
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São-Carlense 400, São Carlos, SP 13566-590, Brazil
| | - Marc Ledendecker
- Sustainable Energy Materials, Technical University Munich, Campus Straubing, Schulgasse 22, 94315 Straubing, Germany.
- Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich GmbH, Cauerstr. 1, 91058 Erlangen, Germany
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39
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Huang B, Gu Q, Tang X, Lützenkirchen-Hecht D, Yuan K, Chen Y. Experimentally validating sabatier plot by molecular level microenvironment customization for oxygen electroreduction. Nat Commun 2024; 15:6077. [PMID: 39030179 PMCID: PMC11271610 DOI: 10.1038/s41467-024-50377-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 07/09/2024] [Indexed: 07/21/2024] Open
Abstract
Microenvironmental modifications on metal sites are crucial to tune oxygen reduction catalytic behavior and decrypt intrinsic mechanism, whereas the stochastic properties of traditional pyrolyzed single-atom catalysts induce vague recognition on structure-reactivity relations. Herein, we report a theoretical descriptor relying on binding energies of oxygen adsorbates and directly associating the derived Sabatier volcano plot with calculated overpotential to forecast catalytic efficiency of cobalt porphyrin. This Sabatier volcano plot instructs that electron-withdrawing substituents mitigate the over-strong *OH intermediate adsorption by virtue of the decreased proportion of electrons in bonding orbital. To experimentally validate this speculation, we implement a secondary sphere microenvironment customization strategy on cobalt porphyrin-based polymer nanocomposite analogs. Systematic X-ray spectroscopic and in situ electrochemical characterizations capture the pronounced accessible active site density and the fast interfacial/outward charge migration kinetics contributions for the optimal carboxyl group-substituted catalyst. This work offers ample strategies for designing single-atom catalysts with well-managed microenvironment under the guidance of Sabatier volcano map.
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Affiliation(s)
- Bingyu Huang
- College of Chemistry and Chemical Engineering/Film Energy Chemistry for Jiangxi Provincial Key Laboratory (FEC), Nanchang University, Nanchang, 330031, PR China
- College of Chemistry and Materials/Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang, 330022, China
| | - Qiao Gu
- College of Chemistry and Chemical Engineering/Film Energy Chemistry for Jiangxi Provincial Key Laboratory (FEC), Nanchang University, Nanchang, 330031, PR China
| | - Xiannong Tang
- College of Chemistry and Chemical Engineering/Film Energy Chemistry for Jiangxi Provincial Key Laboratory (FEC), Nanchang University, Nanchang, 330031, PR China
| | - Dirk Lützenkirchen-Hecht
- Faculty of Mathematics and Natural Sciences-Physics Department, Bergische Universität Wuppertal, Gauss-Str. 20, D-42119, Wuppertal, Germany
| | - Kai Yuan
- College of Chemistry and Chemical Engineering/Film Energy Chemistry for Jiangxi Provincial Key Laboratory (FEC), Nanchang University, Nanchang, 330031, PR China.
| | - Yiwang Chen
- College of Chemistry and Chemical Engineering/Film Energy Chemistry for Jiangxi Provincial Key Laboratory (FEC), Nanchang University, Nanchang, 330031, PR China.
- College of Chemistry and Materials/Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang, 330022, China.
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40
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Wang X, Huang R, Mao X, Liu T, Guo P, Sun H, Mao Z, Han C, Zheng Y, Du A, Liu J, Jia Y, Wang L. Coupling Ni Single Atomic Sites with Metallic Aggregates at Adjacent Geometry on Carbon Support for Efficient Hydrogen Peroxide Electrosynthesis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2402240. [PMID: 38605604 PMCID: PMC11220688 DOI: 10.1002/advs.202402240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 03/06/2024] [Indexed: 04/13/2024]
Abstract
Single atomic catalysts have shown great potential in efficiently electro-converting O2 to H2O2 with high selectivity. However, the impact of coordination environment and introduction of extra metallic aggregates on catalytic performance still remains unclear. Herein, first a series of carbon-based catalysts with embedded coupling Ni single atomic sites and corresponding metallic nanoparticles at adjacent geometry is synthesized. Careful performance evaluation reveals NiSA/NiNP-NSCNT catalyst with precisely controlled active centers of synergetic adjacent Ni-N4S single sites and crystalline Ni nanoparticles exhibits a high H2O2 selectivity over 92.7% within a wide potential range (maximum selectivity can reach 98.4%). Theoretical studies uncover that spatially coupling single atomic NiN4S sites with metallic Ni aggregates in close proximity can optimize the adsorption behavior of key intermediates *OOH to achieve a nearly ideal binding strength, which thus affording a kinetically favorable pathway for H2O2 production. This strategy of manipulating the interaction between single atoms and metallic aggregates offers a promising direction to design new high-performance catalysts for practical H2O2 electrosynthesis.
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Affiliation(s)
- Xin Wang
- College of Chemical EngineeringZhejiang University of TechnologyHangzhou310014P. R. China
| | - Run Huang
- College of Chemical EngineeringZhejiang University of TechnologyHangzhou310014P. R. China
| | - Xin Mao
- School of ChemistryPhysics and Mechanical EngineeringQueensland University of TechnologyBrisbaneQLD4000Australia
| | - Tian Liu
- Division of Nanomaterials & ChemistryHefei National Research Center for Physical Sciences at the MicroscaleInstitute of EnergyHefei Comprehensive National Science CenterDepartment of ChemistryInstitute of Biomimetic Materials & ChemistryAnhui Engineering Laboratory of Biomimetic MaterialsUniversity of Science and Technology of ChinaHefei230026P. R. China
| | - Panjie Guo
- College of Chemical EngineeringZhejiang University of TechnologyHangzhou310014P. R. China
| | - Hai Sun
- College of Chemical EngineeringZhejiang University of TechnologyHangzhou310014P. R. China
| | - Zhelin Mao
- College of Chemical EngineeringZhejiang University of TechnologyHangzhou310014P. R. China
| | - Chao Han
- College of Chemical EngineeringZhejiang University of TechnologyHangzhou310014P. R. China
| | - Yarong Zheng
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction EngineeringSchool of Chemistry and Chemical EngineeringHefei University of TechnologyHefei230041P. R. China
| | - Aijun Du
- School of ChemistryPhysics and Mechanical EngineeringQueensland University of TechnologyBrisbaneQLD4000Australia
| | - Jianwei Liu
- Division of Nanomaterials & ChemistryHefei National Research Center for Physical Sciences at the MicroscaleInstitute of EnergyHefei Comprehensive National Science CenterDepartment of ChemistryInstitute of Biomimetic Materials & ChemistryAnhui Engineering Laboratory of Biomimetic MaterialsUniversity of Science and Technology of ChinaHefei230026P. R. China
| | - Yi Jia
- Petroleum and Chemical Industry Key Laboratory of Organic Electrochemical SynthesisCollege of Chemical EngineeringZhejiang Carbon Neutral Innovation InstituteZhejiang University of Technology (ZJUT)Hangzhou310014P. R. China
- Moganshan Institute ZJUTDeqing313200P. R. China
| | - Lei Wang
- College of Chemical EngineeringZhejiang University of TechnologyHangzhou310014P. R. China
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41
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Zheng Y, Zhang L, Jiang H, Li C, Hu Y. Pd Single-Atom Loaded Ce-Zr Solid Solution Catalysts Prepared by Flame Spray Pyrolysis for Efficient CO Catalytic Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2311346. [PMID: 38308159 DOI: 10.1002/smll.202311346] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/20/2024] [Indexed: 02/04/2024]
Abstract
Single-atom catalysts (SACs) exhibit remarkable catalytic activity at each metal site. However, conventionally synthesized single-atom catalysts often possess low metal loading, thereby constraining their overall catalytic performance. Here, a flame spray pyrolysis (FSP) method for the synthesis of a single-atom catalyst with a high loading capacity of up to 1.4 wt.% in practice is reported. CeZrO2 acts as a carrier and provides a large number of anchoring sites, which promotes the high-density generation of Pd, and the strong interaction between the metal and the support avoids atom aggregation. Pd-CeZrO2 series catalysts have excellent CO oxidation performance. When 0.97 wt.% Pd is added, the catalytic activity is the highest, and the temperature can be reduced to 120 °C. This work presented here demonstrates that FSP, as an inherently scalable technique, allows for elevating the single-atom loading to achieve an increase in its catalytic performance. The method presented here more options for the preparation of SACs.
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Affiliation(s)
- Yaru Zheng
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Ling Zhang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Hao Jiang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Chunzhong Li
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yanjie Hu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
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42
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Ross RD, Lee K, Quintana Cintrón GJ, Xu K, Sheng H, Schmidt JR, Jin S. Stable Pentagonal Layered Palladium Diselenide Enables Rapid Electrosynthesis of Hydrogen Peroxide. J Am Chem Soc 2024; 146:15718-15729. [PMID: 38818811 DOI: 10.1021/jacs.4c00875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
Electrosynthesis of hydrogen peroxide (H2O2) via the two-electron oxygen reduction reaction (2e- ORR) is promising for various practical applications, such as wastewater treatment. However, few electrocatalysts are active and selective for 2e- ORR yet are also resistant to catalyst leaching under realistic operating conditions. Here, a joint experimental and computational study reveals active and stable 2e- ORR catalysis in neutral media over layered PdSe2 with a unique pentagonal puckered ring structure type. Computations predict active and selective 2e- ORR on the basal plane and edge of PdSe2, but with distinct kinetic behaviors. Electrochemical measurements of hydrothermally synthesized PdSe2 nanoplates show a higher 2e- ORR activity than other Pd-Se compounds (Pd4Se and Pd17Se15). PdSe2 on a gas diffusion electrode can rapidly accumulate H2O2 in buffered neutral solution under a high current density. The electrochemical stability of PdSe2 is further confirmed by long device operational stability, elemental analysis of the catalyst and electrolyte, and synchrotron X-ray absorption spectroscopy. This work establishes a new efficient and stable 2e- ORR catalyst at practical current densities and opens catalyst designs utilizing the unique layered pentagonal structure motif.
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Affiliation(s)
- R Dominic Ross
- Department of Chemistry, University of Wisconsin─Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Kwanpyung Lee
- Department of Chemistry, University of Wisconsin─Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Gerardo J Quintana Cintrón
- Department of Chemistry, University of Wisconsin─Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Kaylin Xu
- Department of Chemistry, University of Wisconsin─Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Hongyuan Sheng
- Department of Chemistry, University of Wisconsin─Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - J R Schmidt
- Department of Chemistry, University of Wisconsin─Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Song Jin
- Department of Chemistry, University of Wisconsin─Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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43
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Mok DH, Back S, Siahrostami S. Validating ΔΔG Selectivity Descriptor for Electrosynthesis of H 2O 2 from Oxygen Reduction Reaction. Angew Chem Int Ed Engl 2024; 63:e202404677. [PMID: 38513003 DOI: 10.1002/anie.202404677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 03/19/2024] [Accepted: 03/19/2024] [Indexed: 03/23/2024]
Abstract
Understanding selectivity trends is a crucial hurdle in the developing innovative catalysts for generating hydrogen peroxide through the two-electron oxygen reduction reaction (2e-ORR). The identification of selectivity patterns has been made more accessible through the introduction of a newly developed selectivity descriptor derived from thermodynamics, denoted as ΔΔG introduced in Chem Catal. 2023, 3(3), 100568. To validate the suitability of this parameter as a descriptor for 2e-ORR selectivity, we utilize an extensive library of 155 binary alloys. We validate that ΔΔG reliably depicts the selectivity trends in binary alloys reported for their high activity in the 2e-ORR. This analysis also enables the identification of nine selective 2e-ORR catalysts underscoring the efficacy of ΔΔG as 2e-ORR selectivity descriptor. This work highlights the significance of concurrently considering both selectivity and activity trends. This holistic approach is crucial for obtaining a comprehensive understanding in the identification of high-performance catalyst materials for optimal efficiency in various applications.
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Affiliation(s)
- Dong Hyeon Mok
- Department of Chemical and Biomolecular Engineering, Institute of Emergent Materials, Sogang University, Seoul, 04107, Republic of Korea
| | - Seoin Back
- Department of Chemical and Biomolecular Engineering, Institute of Emergent Materials, Sogang University, Seoul, 04107, Republic of Korea
| | - Samira Siahrostami
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, B.C. V5 A 1S6, Canada
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44
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Yang H, An N, Kang Z, Menezes PW, Chen Z. Understanding Advanced Transition Metal-Based Two Electron Oxygen Reduction Electrocatalysts from the Perspective of Phase Engineering. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2400140. [PMID: 38456244 DOI: 10.1002/adma.202400140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 02/26/2024] [Indexed: 03/09/2024]
Abstract
Non-noble transition metal (TM)-based compounds have recently become a focal point of extensive research interest as electrocatalysts for the two electron oxygen reduction (2e- ORR) process. To efficiently drive this reaction, these TM-based electrocatalysts must bear unique physiochemical properties, which are strongly dependent on their phase structures. Consequently, adopting engineering strategies toward the phase structure has emerged as a cutting-edge scientific pursuit, crucial for achieving high activity, selectivity, and stability in the electrocatalytic process. This comprehensive review addresses the intricate field of phase engineering applied to non-noble TM-based compounds for 2e- ORR. First, the connotation of phase engineering and fundamental concepts related to oxygen reduction kinetics and thermodynamics are succinctly elucidated. Subsequently, the focus shifts to a detailed discussion of various phase engineering approaches, including elemental doping, defect creation, heterostructure construction, coordination tuning, crystalline design, and polymorphic transformation to boost or revive the 2e- ORR performance (selectivity, activity, and stability) of TM-based catalysts, accompanied by an insightful exploration of the phase-performance correlation. Finally, the review proposes fresh perspectives on the current challenges and opportunities in this burgeoning field, together with several critical research directions for the future development of non-noble TM-based electrocatalysts.
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Affiliation(s)
- Hongyuan Yang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
- Department of Chemistry: Metalorganics and Inorganic Materials, Technische Universität Berlin, Straße des 17 Juni 135, Sekr. C2, 10623, Berlin, Germany
| | - Na An
- Materials Chemistry Group for Thin Film Catalysis - CatLab, Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Str. 15, 12489, Berlin, Germany
| | - Zhenhui Kang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
| | - Prashanth W Menezes
- Department of Chemistry: Metalorganics and Inorganic Materials, Technische Universität Berlin, Straße des 17 Juni 135, Sekr. C2, 10623, Berlin, Germany
- Materials Chemistry Group for Thin Film Catalysis - CatLab, Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Str. 15, 12489, Berlin, Germany
| | - Ziliang Chen
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
- Materials Chemistry Group for Thin Film Catalysis - CatLab, Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Str. 15, 12489, Berlin, Germany
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45
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Deng M, Wang D, Li Y. General Design Concept of High-Performance Single-Atom-Site Catalysts for H 2O 2 Electrosynthesis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2314340. [PMID: 38439595 DOI: 10.1002/adma.202314340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/25/2024] [Indexed: 03/06/2024]
Abstract
Hydrogen peroxide (H2O2) as a green oxidizing agent is widely used in various fields. Electrosynthesis of H2O2 has gradually become a hotspot due to its convenient and environment-friendly features. Single-atom-site catalysts (SASCs) with uniform active sites are the ideal catalysts for the in-depth study of the reaction mechanism and structure-performance relationship. In this review, the outstanding achievements of SASCs in the electrosynthesis of H2O2 through 2e- oxygen reduction reaction (ORR) and 2e- water oxygen reaction (WOR) in recent years, are summarized. First, the elementary steps of the two pathways and the roles of key intermediates (*OOH and *OH) in the reactions are systematically discussed. Next, the influence of the size effect, electronic structure regulation, the support/interfacial effect, the optimization of coordination microenvironments, and the SASCs-derived catalysts applied in 2e- ORR are systematically analyzed. Besides, the developments of SASCs in 2e- WOR are also overviewed. Finally, the research progress of H2O2 electrosynthesis on SASCs is concluded, and an outlook on the rational design of SASCs is presented in conjunction with the design strategies and characterization techniques.
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Affiliation(s)
- Mingyang Deng
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Dingsheng Wang
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yadong Li
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
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46
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Li Y, Cheng H, Wang M, Xu J, Guan L. Highly coordinative molecular cobalt-phthalocyanine electrocatalyst on an oxidized single-walled carbon nanotube for efficient hydrogen peroxide production. MATERIALS HORIZONS 2024; 11:2517-2527. [PMID: 38497122 DOI: 10.1039/d3mh02142d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
H2O2 production via the two-electron oxygen reduction reaction (2e- ORR) offers a potential alternative to the current anthraquinone method owing to its efficiency and environmental friendliness. However, it is necessary to determine the structures of electrocatalysts with cost-effectiveness and high efficiency for future industrialization demand. Herein, a supramolecular catalyst composed of cobalt-phthalocyanine on a near-monodispersed and oxidized single-walled carbon nanotube (CoPc/o-SWCNT) was synthesized via a solution self-assembly method for catalyzing the 2e- ORR for H2O2 electrosynthesis. Benefiting from the enhanced intermolecular interaction by introducing oxygen functional groups on o-SWCNTs, the oxidation states of single-atom Co sites were tuned via the formation of two extra Co-O bonds. Coupled with structural characterizations, density-functional theory (DFT) calculations reveal that the depressed d-band center of the Co site regulated by two axially-bridged O atoms gives rise to a suitable binding strength of oxygen intermediates (*OOH) to favor the 2e- ORR. Thus, the CoPc-6wt%/o-SWCNT-2 catalyst with optimized synthetic parameters delivers competitive 2e- ORR performance for H2O2 electrosynthesis in a neutral electrolyte (pH = 7), including enhanced H2O2 generation, satisfactory molar selectivity of ∼83-95% and long-period stability (75 h) in H-cell measurement. Moreover, it could also be boosted to show a high current of 45 mA cm-2, recorded turnover frequency of 25.3 ± 0.5 s-1 and maximum H2O2 production rate of 5.85 mol g-1 h-1 with a continuous H2O2 accumulation of 1.2 wt% in a flow-cell device, which outperformed most of the reported neutral-selective nonprecious metal single-atom catalysts.
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Affiliation(s)
- Yaoxin Li
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China.
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350108, China
| | - Haoying Cheng
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350108, China
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, China
| | - Meilin Wang
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350108, China
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, China
| | - Jiaoxing Xu
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China.
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350108, China
| | - Lunhui Guan
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China.
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350108, China
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47
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Yu A, Liu S, Yang Y. Recent advances in electrosynthesis of H 2O 2via two-electron oxygen reduction reaction. Chem Commun (Camb) 2024; 60:5232-5244. [PMID: 38683172 DOI: 10.1039/d4cc01476f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
The electrosynthesis of hydrogen peroxide (H2O2) via a selective two-electron oxygen reduction reaction (2e- ORR) presents a green and low-energy-consumption alternative to the traditional, energy-intensive anthraquinone process. This review encapsulates the principles of designing relational electrocatalysts for 2e- ORR and explores remaining setups for large-scale H2O2 production. Initially, the review delineates the fundamental reaction mechanisms of H2O2 production via 2e- ORR and assesses performance. Subsequently, it methodically explores the pivotal influence of microstructures, heteroatom doping, and metal hybridization along with setup configurations in achieving a high-performance catalyst and efficient reactor for H2O2 production. Thereafter, the review introduces a forward-looking methodology that leverages the synergistic integration of catalysts and reactors, aiming to harmonize the complementary characteristics of both components. Finally, it outlines the extant challenges and the promising avenues for the efficient electrochemical production of H2O2, setting the stage for future research endeavors.
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Affiliation(s)
- Ao Yu
- NanoScience Technology Center, University of Central Florida, Orlando, FL, 32826, USA.
| | - Shengwen Liu
- NanoScience Technology Center, University of Central Florida, Orlando, FL, 32826, USA.
| | - Yang Yang
- NanoScience Technology Center, University of Central Florida, Orlando, FL, 32826, USA.
- Department of Materials Science and Engineering, University of Central Florida, Orlando, FL 32826, USA
- Renewable Energy and Chemical Transformation Cluster, University of Central Florida, Orlando, FL 32826, USA
- Department of Chemistry, University of Central Florida, Orlando, FL 32826, USA
- The Stephen W. Hawking Center for Microgravity Research and Education, University of Central Florida, Orlando, FL 32826, USA
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48
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Yin H, Pan R, Zou M, Ge X, Shi C, Yuan J, Huang C, Xie H. Recent Advances in Carbon-Based Single-Atom Catalysts for Electrochemical Oxygen Reduction to Hydrogen Peroxide in Acidic Media. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:835. [PMID: 38786791 PMCID: PMC11124143 DOI: 10.3390/nano14100835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 04/27/2024] [Accepted: 05/06/2024] [Indexed: 05/25/2024]
Abstract
Electrochemical oxygen reduction reaction (ORR) via the 2e- pathway in an acidic media shows great techno-economic potential for the production of hydrogen peroxide. Currently, carbon-based single-atom catalysts (C-SACs) have attracted extensive attention due to their tunable electronic structures, low cost, and sufficient stability in acidic media. This review summarizes recent advances in metal centers and their coordination environment in C-SACs for 2e--ORR. Firstly, the reaction mechanism of 2e--ORR on the active sites of C-SACs is systematically presented. Secondly, the structural regulation strategies for the active sites of 2e--ORR are further summarized, including the metal active center, its species and configurations of nitrogen coordination or heteroatom coordination, and their near functional groups or substitute groups, which would provide available and proper ideas for developing superior acidic 2e--ORR electrocatalysts of C-SACs. Finally, we propose the current challenges and future opportunities regarding the acidic 2e--ORR pathway on C-SACs, which will eventually accelerate the development of the distributed H2O2 electrosynthesis process.
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Affiliation(s)
| | | | | | | | | | - Jili Yuan
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Huaxi District, Guiyang 550025, China; (H.Y.); (R.P.); (M.Z.); (X.G.); (C.S.)
| | - Caijuan Huang
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Huaxi District, Guiyang 550025, China; (H.Y.); (R.P.); (M.Z.); (X.G.); (C.S.)
| | - Haibo Xie
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Huaxi District, Guiyang 550025, China; (H.Y.); (R.P.); (M.Z.); (X.G.); (C.S.)
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49
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Lin Z, Han Z, O'Connell GEP, Wan T, Zhang D, Ma Z, Chu D, Lu X. Graphene and MOF Assembly: Enhanced Fabrication and Functional Derivative via MOF Amorphization. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2312797. [PMID: 38288643 DOI: 10.1002/adma.202312797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/19/2024] [Indexed: 02/09/2024]
Abstract
The integration of graphene and metal-organic frameworks (MOFs) has numerous implications across various domains, but fabricating such assemblies is often complicated and time-consuming. Herein, a one-step preparation of graphene-MOF assembly is presented by directly impregnating vertical graphene (VG) arrays into the zeolitic imidazolate framework (ZIF) precursors under ambient conditions. This approach can effectively assemble multiple ZIFs, including ZIF-7, ZIF-8, and ZIF-67, resulting in their uniform dispersion on the VG with adjustable sizes and shapes. Hydrogen defects on the VG surface are critical in inducing such high-efficiency ZIF assembly, acting as the reactive sites to interact with the ZIF precursors and facilitate their crystallisation. The versatility of VG-ZIF-67 assembly is further demonstrated by exploring the process of MOF amorphization. Surprisingly, this process leads to an amorphous thin-film coating formed on VG (named VG-IL-amZIF-67), which preserves the short-range molecular bonds of crystalline ZIF-67 while sacrificing the long-range order. Such a unique film-on-graphene architecture maintains the essential characteristics and functionalities of ZIF-67 within a disordered arrangement, making it well-suited for electrocatalysis. In electrochemical oxygen reduction, VG-IL-amZIF-67 exhibits exceptional activity, selectivity, and stability to produce H2O2 in acid media.
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Affiliation(s)
- Zeheng Lin
- Particles and Catalysis Research Group, School of Chemical Engineering, The University of New South Wales, Kensington, New South Wales, 2052, Australia
| | - Zhaojun Han
- Particles and Catalysis Research Group, School of Chemical Engineering, The University of New South Wales, Kensington, New South Wales, 2052, Australia
- CSIRO Manufacturing, 36 Bradfield Road, Lindfield, New South Wales, 2070, Australia
| | - George E P O'Connell
- Particles and Catalysis Research Group, School of Chemical Engineering, The University of New South Wales, Kensington, New South Wales, 2052, Australia
| | - Tao Wan
- School of Materials Science and Engineering, The University of New South Wales, Kensington, New South Wales, 2052, Australia
| | - Ding Zhang
- Particles and Catalysis Research Group, School of Chemical Engineering, The University of New South Wales, Kensington, New South Wales, 2052, Australia
| | - Zhipeng Ma
- Particles and Catalysis Research Group, School of Chemical Engineering, The University of New South Wales, Kensington, New South Wales, 2052, Australia
| | - Dewei Chu
- School of Materials Science and Engineering, The University of New South Wales, Kensington, New South Wales, 2052, Australia
| | - Xunyu Lu
- Particles and Catalysis Research Group, School of Chemical Engineering, The University of New South Wales, Kensington, New South Wales, 2052, Australia
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50
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Ramaprakash M, G NB, Neppolian B, Sengeni A. An advanced Ru-based alkaline HER electrocatalyst benefiting from Volmer-step promoting 5d and 3d co-catalysts. Dalton Trans 2024; 53:7596-7604. [PMID: 38618661 DOI: 10.1039/d4dt00710g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
In this study, a trimetallic catalyst, NiWRu@NF, is electrodeposited onto nickel foam using chronoamperometry to enhance the hydrogen evolution reaction (HER) in alkaline water electrolysis. The catalyst combines nickel, tungsten, and ruthenium components, strategically designed for efficiency and cost-effectiveness, hydroxyl transfer and water dissociation, and acceleration of hydrogen combination, respectively. Evaluation of NiWRu@NF reveals exceptional performance, with a low overpotential of -50 mV and high current density of -10 mA cm-2, signifying its efficiency in promoting HER. Tafel values further corroborate the catalyst's effectiveness, indicating a rapid reaction rate of hydrogen evolution in such a highly alkaline medium compared to other controls studied along with it. This study underscores the significance of NiWRu@NF in advancing alkaline HER kinetics, paving the way for more efficient electrolysis processes.
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Affiliation(s)
- M Ramaprakash
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, India.
| | - Nasrin Banu G
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, India.
| | - Bernaurdshaw Neppolian
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, India.
| | - Anantharaj Sengeni
- Department of Chemistry, Indian Institute of Technology Kanpur, Uttar Pradesh 208016, India.
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