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Ma L, Liu H, Mei B, Chen J, Cheng Q, Ma J, Yang B, Li Q, Yang H. Cu supraparticles with enhanced mass transfer and abundant C-C coupling sites achieving ampere-level CO 2-to-C 2+ electrosynthesis. Nat Commun 2025; 16:3421. [PMID: 40210853 PMCID: PMC11986098 DOI: 10.1038/s41467-025-58755-w] [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: 09/18/2024] [Accepted: 04/01/2025] [Indexed: 04/12/2025] Open
Abstract
The efficient electrochemical CO2 reduction to C2+ products at high current densities remains a significant challenge. Here we show inherently hydrophobic and hierarchically porous Cu supraparticles comprising sub-10 nm Cu constituent particles for ampere-level CO2-to-C2+ electrosynthesis. These supraparticles feature abundant grain boundaries for high C2+ selectivity, coupled with interconnected mesopores and interparticle macropore cavities to enhance the accessibility of the active sites and mass transfer, breaking the trade-off between activity and mass transfer in Cu-based catalysts. Moreover, the intrinsic hydrophobicity of the supraparticles mitigates the water-flooding issue of catalytic layer in flow cells, improving the stability at high current densities. Consequently, the Cu supraparticles achieve ampere-level CO2 electrolysis up to 3.2 A cm-2 with a C2+ Faradaic efficiency of 74.9% (compared to 1.21 A cm-2 and 55.4% for Cu nanoparticles) and maintain stability at 1 A cm-2 for over 100 h. This work provides profound insights into the effect of the coupling of mass transfer and catalytic reaction under a high current and presents a corresponding solution by superstructure design.
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Affiliation(s)
- Lushan Ma
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China
- College of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, China
| | - Hong Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
| | - Bingbao Mei
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China
| | - Jing Chen
- College of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, China
| | - Qingqing Cheng
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China
| | - Jingyuan Ma
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China
| | - Bo Yang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
| | - Qiang Li
- MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing, China.
| | - Hui Yang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China.
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2
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Zang Y, Li H, Sun Y, Tang L, Xu K, Gao D. Controlling the Activity and Selectivity of Cu Catalysts toward Industrially Relevant Ethanol Electrosynthesis via High-Index Step Density Engineering. ACS NANO 2025; 19:13436-13445. [PMID: 40146760 DOI: 10.1021/acsnano.5c01637] [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
Electrochemical CO2 reduction reaction on Cu catalysts can generate high-value multicarbon (C2+) products, making it a significant research area of growing commercial interest. However, the production rate of ethanol remains low owing to the trade-off between the activity and selectivity of Cu catalysts. Here, we develop a defect-rich Cu catalyst with abundant high-index step sites by chemically etching commercially available Cu nanoparticles. This catalyst exhibits a high Faradaic efficiency of ∼50% and a partial current density of ∼416 mA cm-2 for ethanol production. Furthermore, it shows good stability at a high total current density of ∼800 mA cm-2, without obvious decay in ethanol selectivity. Control experiments indicate that the impressive ethanol selectivity is closely associated with the high density of high-index steps present on the defect-rich Cu catalyst. In situ Raman spectroscopy and density functional theory calculations further verify that the optimal high-index step sites enable balanced adsorption of *CO, *OH, and *H, and facilitate the hydrogenation of *CHCOH to *CHCHOH, thereby improving ethanol selectivity. This work underscores the importance of step density control for steering the reaction pathway and selectivity toward ethanol.
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Affiliation(s)
- Yipeng Zang
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Haitao Li
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia 010021, China
| | - Yan Sun
- School of Chemistry and Chemical Engineering, Zhangjiang Institute for Advanced Study, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Lei Tang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Kangli Xu
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Dunfeng Gao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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3
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Zang Y, Liu Y, Lu R, Yang Q, Wang B, Zhang M, Mao Y, Wang Z, Lum Y. Tuning Transition Metal 3d Spin state on Single-atom Catalysts for Selective Electrochemical CO 2 Reduction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2025; 37:e2417034. [PMID: 40079062 PMCID: PMC12016740 DOI: 10.1002/adma.202417034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2024] [Revised: 02/13/2025] [Indexed: 03/14/2025]
Abstract
Tuning transition metal spin states potentially offers a powerful means to control electrocatalyst activity. However, implementing such a strategy in electrochemical CO2 reduction (CO2R) is challenging since rational design rules have yet to be elucidated. Here we show how the addition of P dopants to a ferromagnetic element (Fe, Co, and Ni) single-atom catalyst (SAC) can shift its spin state. For instance, with Fe SAC, P dopants enable a switch from low spin state (dx2- y2 0, dz2 0, dxz 2, dyz 1, dxy 2) in Fe-N4 to high spin state (dx2-y2 0, dxz 1, dyz 1, dz2 1, dxy 2) in Fe-N3-P. This is studied using a suite of characterization efforts, including X-ray absorption spectroscopy (XAS), electron spin resonance (ESR) spectroscopy, and superconducting quantum interference device (SQUID) measurements. When used for CO2R, the SAC with Fe-N3-P active sites yields > 90% Faradaic efficiency to CO over a wide potential window of ≈530 mV and a maximum CO partial current density of ≈600 mA cm-2. Density functional theory calculations reveal that high spin state Fe3+ exhibits enhanced electron back donation via the dxz/dyz-π* bond, which enhances *COOH adsorption and promotes CO formation. Taken together, the results show how the SAC spin state can be intentionally tuned to boost CO2R performance.
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Affiliation(s)
- Yipeng Zang
- Department of Chemical and Biomolecular EngineeringNational University of SingaporeSingapore117585Republic of Singapore
| | - Yan Liu
- School of Chemical SciencesUniversity of AucklandAuckland1010New Zealand
| | - Ruihu Lu
- School of Chemical SciencesUniversity of AucklandAuckland1010New Zealand
| | - Qin Yang
- Department of Chemical and Biomolecular EngineeringNational University of SingaporeSingapore117585Republic of Singapore
| | - Bingqing Wang
- Department of Chemical and Biomolecular EngineeringNational University of SingaporeSingapore117585Republic of Singapore
| | - Mingsheng Zhang
- Institute of Materials Research and Engineering (IMRE)Agency for ScienceTechnology and Research (A*STAR)2 Fusionopolis Way, Innovis #08‐03Singapore138634Republic of Singapore
| | - Yu Mao
- School of Chemical SciencesUniversity of AucklandAuckland1010New Zealand
| | - Ziyun Wang
- School of Chemical SciencesUniversity of AucklandAuckland1010New Zealand
| | - Yanwei Lum
- Department of Chemical and Biomolecular EngineeringNational University of SingaporeSingapore117585Republic of Singapore
- Institute of Materials Research and Engineering (IMRE)Agency for ScienceTechnology and Research (A*STAR)2 Fusionopolis Way, Innovis #08‐03Singapore138634Republic of Singapore
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4
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Zhou L, Huang Y, Wang Y, Wen B, Jiang Z, Li F. Mechanistic understanding of CO 2 reduction and evolution reactions in Li-CO 2 batteries. NANOSCALE 2024; 16:17324-17337. [PMID: 39248391 DOI: 10.1039/d4nr02633k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/10/2024]
Abstract
Rechargeable Li-CO2 batteries have attracted extensive attention owing to their high theoretical energy density (1876 W h Kg-1). However, their practical application is hindered by large polarization, low coulombic efficiency, and cathode degradation. The electrochemical performance of Li-CO2 batteries is significantly affected by the thermodynamic stability and reaction kinetics of discharge products. Although advances have been achieved in cathode design and electrolyte optimization over the past decade, the reaction mechanism of the CO2 cathode has not yet been clear. In this review, various reaction mechanisms of CO2 reduction and evolution at the cathode interface are discussed, including different reaction routes under mixed O2/CO2 and pure CO2 environments. Furthermore, the regulating strategies of different discharge products, including Li2CO3, Li2C2O6, and Li2C2O4, are summarized to decrease the polarization and improve the cycling performance of Li-CO2 batteries. Finally, the challenges and perspectives are discussed from three aspects: reaction mechanisms, cathode catalysts, and electrolyte engineering, offering insights for the development of Li-CO2 batteries in the future.
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Affiliation(s)
- Lang Zhou
- State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Yaohui Huang
- State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Yuzhe Wang
- State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Bo Wen
- State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Zhuoliang Jiang
- State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Fujun Li
- State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China.
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
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5
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Zang Y, Wang S, Sang J, Wei P, Zhang X, Wang Q, Wang G. Illustration of the Intrinsic Mechanism of Reconstructed Cu Clusters for Enhanced CO 2 Electroreduction to Ethanol Production with Industrial Current Density. NANO LETTERS 2024. [PMID: 38856118 DOI: 10.1021/acs.nanolett.4c01239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Copper-based catalysts have been attracting increasing attention for CO2 electroreduction into value-added multicarbon chemicals. However, most Cu-based catalysts are designed for ethylene production, while ethanol production with high Faradaic efficiency at high current density still remains a great challenge. Herein, Cu clusters supported on single-atom Cu dispersed nitrogen-doped carbon (Cux/Cu-N/C) show ethanol Faradaic efficiency of ∼40% and partial current density of ∼350 mA cm-2. Quasi in situ X-ray photoelectron spectroscopy and operando X-ray absorption spectroscopy results suggest the generation of surface asymmetrical sites of Cu+ and Cu0 as well as Cu clusters by electrochemical reduction and reconstruction during the CO2 electroreduction process. Density functional theory calculations indicate that the interaction between Cu clusters and the Cu-N/C support enhances *CO adsorption, facilitates the C-C coupling step, and favors the hydrogenation rather than dehydroxylation of the critical intermediate *CHCOH toward ethanol in the bifurcation.
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Affiliation(s)
- Yipeng Zang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Shuo Wang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Jiaqi Sang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 101408, China
| | - Pengfei Wei
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xiaomin Zhang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Qi Wang
- School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, China
| | - Guoxiong Wang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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6
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Zhang N, Naden A, Zhang L, Yang X, Connor P, Irvine J. Enhanced CO 2 Electrolysis Through Mn Substitution Coupled with Ni Exsolution in Lanthanum Calcium Titanate Electrodes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2308481. [PMID: 37902720 DOI: 10.1002/adma.202308481] [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: 08/21/2023] [Revised: 10/19/2023] [Indexed: 10/31/2023]
Abstract
In this study, perovskite oxides La0.3Ca0.6Ni0.05MnxTi0.95- xO3- γ (x = 0, 0.05, 0.10) are investigated as potential solid oxide electrolysis cell cathode materials. The catalytic activity of these cathodes toward CO2 reduction reaction is significantly enhanced through the exsolution of highly active Ni nanoparticles, driven by applying a current of 1.2 A in 97% CO2 - 3% H2O. The performance of La0.3Ca0.6Ni0.05Ti0.95O3-γ is notably improved by co-doping with Mn. Mn dopants enhance the reducibility of Ni, a crucial factor in promoting the in situ exsolution of metallic nanocatalysts in perovskite (ABO3) structures. This improvement is attributed to Mn dopants enabling more flexible coordination, resulting in higher oxygen vacancy concentration, and facilitating oxygen ion migration. Consequently, a higher density of Ni nanoparticles is formed. These oxygen vacancies also improve the adsorption, desorption, and dissociation of CO2 molecules. The dual doping strategy provides enhanced performance without degradation observed after 133 h of high-temperature operation, suggesting a reliable cathode material for CO2 electrolysis.
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Affiliation(s)
- Nuoxi Zhang
- School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK
| | - Aaron Naden
- School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK
| | - Lihong Zhang
- School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK
- Beijing Key Laboratory for Chemical Power Source and Green Catalysis, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Xiaoxia Yang
- School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK
- Beijing Key Laboratory for Chemical Power Source and Green Catalysis, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Paul Connor
- School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK
| | - John Irvine
- School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK
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7
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Yu J, Hao X, Mu L, Shi W, She G. Photoelectrocatalytic Utilization of CO 2 : A Big Show of Si-based Photoelectrodes. Chemistry 2024; 30:e202303552. [PMID: 38158581 DOI: 10.1002/chem.202303552] [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: 10/26/2023] [Revised: 12/28/2023] [Accepted: 12/29/2023] [Indexed: 01/03/2024]
Abstract
CO2 is a greenhouse gas that contributes to environmental deterioration; however, it can also be utilized as an abundant C1 resource for the production of valuable chemicals. Solar-driven photoelectrocatalytic (PEC) CO2 utilization represents an advanced technology for the resourcing of CO2 . The key to achieving PEC CO2 utilization lies in high-performance semiconductor photoelectrodes. Si-based photoelectrodes have attracted increasing attention in the field of PEC CO2 utilization due to their suitable band gap (1.1 eV), high carrier mobility, low cost, and abundance on Earth. There are two pathways to PEC CO2 utilization using Si-based photoelectrodes: direct reduction of CO2 into small molecule fuels and chemicals, and fixation of CO2 with organic substrates to generate high-value chemicals. The efficiency and product selectivity of PEC CO2 utilization depends on the structures of the photoelectrodes as well as the composition, morphology, and size of the catalysts. In recent years, significant and influential progress has been made in utilizing Si-based photoelectrodes for PEC CO2 utilization. This review summarizes the latest research achievements in Si-based PEC CO2 utilization, with a particular emphasis on the mechanistic understanding of CO2 reduction and fixation, which will inspire future developments in this field.
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Affiliation(s)
- Jiacheng Yu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China
- University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Xue Hao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China
- University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Lixuan Mu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China
| | - Wensheng Shi
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China
- University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Guangwei She
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China
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8
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Yuan H, Kong B, Liu Z, Cui L, Wang X. Dealloying-derived nanoporous Sn-doped copper with prior selectivity toward formate for CO 2 electrochemical reduction. Chem Commun (Camb) 2023; 60:184-187. [PMID: 38038960 DOI: 10.1039/d3cc04825j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
We report nanoporous Cu-Sn catalysts fabricated by chemically dealloying rapid solidified Al-Cu-Sn alloys for the CO2RR. The np-Cu11Sn1 catalyst exhibits a three-dimensional interconnected ligament-channel network structure, which can efficiently convert CO2 to formate with a Faradaic efficiency (FE) of 72.1% at -1.0 V (vs. RHE).
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Affiliation(s)
- Hefeng Yuan
- Institute of Resources and Environmental Engineering, Shanxi University, Taiyuan 030006, China.
| | - Bohao Kong
- Laboratory of Advanced Materials and Energy Electrochemistry, College of Materials Science & Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
| | - Zhehao Liu
- Laboratory of Advanced Materials and Energy Electrochemistry, College of Materials Science & Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
| | - Li Cui
- Institute of Resources and Environmental Engineering, Shanxi University, Taiyuan 030006, China.
| | - Xiaoguang Wang
- Laboratory of Advanced Materials and Energy Electrochemistry, College of Materials Science & Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
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9
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Zeng Q, Yang G, Zhang Q, Liu Z, Dang C, Qin B, Peng F. Elucidating the origin of catalytic activity of nitrogen-doped carbon coated nickel toward electrochemical reduction of CO 2. J Colloid Interface Sci 2023; 650:132-142. [PMID: 37399749 DOI: 10.1016/j.jcis.2023.06.198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/16/2023] [Accepted: 06/27/2023] [Indexed: 07/05/2023]
Abstract
Converting CO2 into valuable chemicals and fuels through clean and renewable energy electricity provides a way to achieve sustainable development for human societies. In this study, carbon coated nickel catalysts (Ni@NCT) were prepared by solvothermal and high-temperature pyrolysis methods. A series of Ni@NC-X catalysts were obtained by pickling with different kinds of acids for electrochemical CO2 reduction reaction (ECRR). The results show that Ni@NC-N treated with nitric acid has the highest selectivity but lower activity, Ni@NC-S treated with sulfuric acid has the lowest selectivity, and Ni@NC-Cl treated with hydrochloric acid shows the best activity and good selectivity. At -1.16 V, Ni@NC-Cl has a considerable CO yield of 472.9 μmol h-1 cm-2, which is significantly superior to Ni@NC-N (327.5), Ni@NC-S (295.6) and Ni@NC (270.8). The controlled experiments show that there is a synergistic effect between Ni and N. The chlorine adsorbed on the surface can promote the performance of ECRR. The poisoning experiments indicate that the contribution of surface Ni atoms to the ECRR is very small, and the increase of activity is mainly due to the nitrogen doped carbon coated Ni particles. The relationship between activity and selectivity of ECRR on different acid-washed catalysts was correlated by theoretical calculations for the first time, which is also in good agreement with the experimental results.
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Affiliation(s)
- Qingting Zeng
- School Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Guangxing Yang
- School Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Qiao Zhang
- School Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Zhiting Liu
- School Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Chengxiong Dang
- School Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Binhao Qin
- China-Ukraine Institute of Welding, Guangdong Academy of Sciences, Guangdong Provincial Key Laboratory of Advanced Welding Technology, Guangzhou 510650, China.
| | - Feng Peng
- School Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China.
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Liu C, Yan W, Wen Y, Huang Z, Chen B, Li Y, Huang X. Metal-Organic Framework Derived Cu-Ag Interface for Selective Carbon Monoxide Electroreduction to Acetate. Chemistry 2023; 29:e202301456. [PMID: 37314829 DOI: 10.1002/chem.202301456] [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: 05/08/2023] [Revised: 06/10/2023] [Accepted: 06/13/2023] [Indexed: 06/15/2023]
Abstract
Electrochemical carbon monoxide reduction reaction (CORR) is a potential way to obtain high-value multi-carbon (C2+ ) products. However, achieving high selectivity to acetate is still a challenge. Herein, we develop a two-dimensional Ag-modified Cu metal-organic framework (Ag0.10 @CuMOF-74) that demonstrates Faradaic efficiency (FE) for C2+ products up to 90.4 % at 200 mA cm-2 and an acetate FE of 61.1 % with a partial current density of 122.2 mA cm-2 . Detailed investigations show that the introduction of Ag on CuMOF-74 favors the generation of abundant Cu-Ag interface sites. In situ attenuated total reflection surface enhanced infrared absorption spectroscopy confirms that these Cu-Ag interface sites improve the coverage of *CO and *CHO and the coupling between each other and stabilize key intermediates *OCCHO and *OCCH2 , thus significantly promoting to the acetate selectivity on Ag0.10 @CuMOF-74. This work provides a high-efficiency pathway for CORR to C2+ products.
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Affiliation(s)
- Chang Liu
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361000, Fujian, P. R. China
| | - Wei Yan
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361000, Fujian, P. R. China
| | - Yan Wen
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361000, Fujian, P. R. China
| | - Zhongliang Huang
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361000, Fujian, P. R. China
| | - Bo Chen
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361000, Fujian, P. R. China
| | - Yunhua Li
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361000, Fujian, P. R. China
| | - Xiaoqing Huang
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361000, Fujian, P. R. China
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