1
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Han N, Zhang W, Wu J, Chu K, Feng S, Wang S, Puente-Santiago AR, Long J, Weng B, Su BL. Boosting Electrocatalytic Nitrogen Reduction on Cobalt-Based Perovskite via Regulating Reaction Pathway Through Donation-Back-Donation Modulation. Angew Chem Int Ed Engl 2025:e202504601. [PMID: 40227956 DOI: 10.1002/anie.202504601] [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: 02/25/2025] [Revised: 04/10/2025] [Accepted: 04/14/2025] [Indexed: 04/16/2025]
Abstract
The electrocatalytic approach of combining N2 and H2O to produce ammonia, known as the electrocatalytic N2 reduction reaction (eNRR), has garnered significant attention due to its environmental benefits and potential for supporting a decentralized agricultural economy. However, the underlying chemistry governing the reaction pathways remains poorly understood, hindering the design of low-cost and efficient eNRR catalysts. Here we report the enhancement of the electrocatalytic eNRR activity of perovskite oxides by tuning the reaction pathway through a "donation-back-donation" mechanism. This is achieved by controlling the spin state via adjusting the distribution of d orbital electrons in low-cost transition metals, such as cobalt. Specifically, the cobalt in perovskite SrCoO3 (SC) with a low-spin state demonstrates an 18 times higher ammonia yield rate compared to that in Co3O4 and 1.5 times higher than cobalt in perovskite LaCoO3 (LC). The low spin states of cobalt in SC enable better control of the eNRR reaction pathway over the transformation of *N2H to *NHNH or *NNH2, resulting in alternating hydrogenation in SC rather than distal hydrogenation in LC with a high spin state. The unprecedented improvement in eNRR by regulating the spin state of Co demonstrates the bright of low-cost Co-based electrocatalysts for ammonia production.
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Affiliation(s)
- Ning Han
- The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, Ontario, ON, M5S 1A4, Canada
| | - Wei Zhang
- Institute of Energy Materials Science, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Jianxiang Wu
- Shanghai Key Laboratory of Materials Protection and Advanced Materials Electric Power, Shanghai University of Electric Power, Shanghai, 200090, China
| | - Kaibin Chu
- School of Materials Science and Engineering, Linyi University, Linyi, 276000, China
| | - Shihui Feng
- Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, Stockholm, 10 691, Sweden
| | - Shuo Wang
- State Key Laboratory of Chemistry for NBC Hazards Protection, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
| | | | - Jinlin Long
- State Key Laboratory of Chemistry for NBC Hazards Protection, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
| | - Bo Weng
- State Key Laboratory of Advanced Environmental Technology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
| | - Bao-Lian Su
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
- Laboratory of Inorganic Materials Chemistry (CMI), University of Namur, 61 rue de Bruxelles, Namur, 5000, Belgium
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2
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Li Y, Qin T, Xu L, Ma Y, Guo H, Xiong J, Zhang P, Zhao Z, Liu X, Liu Y, Zou J, Chen L, Wei Y. Enhancing Catalytic Removal of Autoexhaust Soot Particles via the Modulation of Interfacial Oxygen Vacancies in Cu/CeO 2 Catalysts. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2025; 59:2327-2338. [PMID: 39824766 DOI: 10.1021/acs.est.4c12325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2025]
Abstract
The purification efficiency of autoexhaust carbon strongly depends on the heterogeneous interface structure between active metal and oxide, which can modulate the local electronic structure of defect sites to promote the activation of reactant molecules. Herein, the high-dispersion CuO clusters supported on the well-defined CeO2 nanorods were prepared using the complex deposition slow method. The formation of heteroatomic Cu+-Ov-Ce3+ interfacial structural units as active sites can capture electrons to achieve activation of the NO and O2 molecules. Among all of the synthesized catalysts, the Cu10/CeO2 catalyst exhibits superior catalytic performance (T50 = 351 °C) along with remarkable tolerance to H2O and SO2 in the removal of soot particles. Through a combination of comprehensive characterizations and density functional theory calculations, it is proposed that the interfacial Cu+-Ov-Ce3+ site, acting as an electron enrichment center, can capture electrons from the Cu d-band and Ce d/f-band to obtain high delocalized electron density, and then enhance the oxidation of NO to NO2, which plays a crucial role in the NOx-assisted catalytic mechanism for soot oxidation. This study presents a novel strategy for developing highly efficient catalysts that exhibit resistance to H2O and SO2, aimed at enhancing the removal of soot particles.
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Affiliation(s)
- Yuanfeng Li
- State Key Laboratory of Heavy Oil Processing, Key Laboratory of Optical Detection Technology for Oil and Gas, College of Science, China University of Petroleum, Beijing 102249, PR China
| | - Tian Qin
- School of Chemistry and Chemical, In-situ Center for Physical Science, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Linsheng Xu
- State Key Laboratory of Heavy Oil Processing, Key Laboratory of Optical Detection Technology for Oil and Gas, College of Science, China University of Petroleum, Beijing 102249, PR China
| | - Yaxiao Ma
- State Key Laboratory of Heavy Oil Processing, Key Laboratory of Optical Detection Technology for Oil and Gas, College of Science, China University of Petroleum, Beijing 102249, PR China
| | - Haoqi Guo
- State Key Laboratory of Heavy Oil Processing, Key Laboratory of Optical Detection Technology for Oil and Gas, College of Science, China University of Petroleum, Beijing 102249, PR China
| | - Jing Xiong
- State Key Laboratory of Heavy Oil Processing, Key Laboratory of Optical Detection Technology for Oil and Gas, College of Science, China University of Petroleum, Beijing 102249, PR China
| | - Peng Zhang
- State Key Laboratory of Heavy Oil Processing, Key Laboratory of Optical Detection Technology for Oil and Gas, College of Science, China University of Petroleum, Beijing 102249, PR China
| | - Zhen Zhao
- State Key Laboratory of Heavy Oil Processing, Key Laboratory of Optical Detection Technology for Oil and Gas, College of Science, China University of Petroleum, Beijing 102249, PR China
| | - Xi Liu
- School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
- School of Chemistry and Chemical, In-situ Center for Physical Science, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Yunpeng Liu
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Jianping Zou
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Liwei Chen
- School of Chemistry and Chemical, In-situ Center for Physical Science, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Yuechang Wei
- State Key Laboratory of Heavy Oil Processing, Key Laboratory of Optical Detection Technology for Oil and Gas, College of Science, China University of Petroleum, Beijing 102249, PR China
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3
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Shafiezadeh F, Javid A, Zhiani R, Allameh S. Ho 3Fe 5O 12 nanoparticles immobilized on FPS for production of a biopolymer from CO 2 and limonene epoxide. RSC Adv 2024; 14:37431-37437. [PMID: 39582934 PMCID: PMC11583889 DOI: 10.1039/d4ra05285d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2024] [Accepted: 10/22/2024] [Indexed: 11/26/2024] Open
Abstract
Herein, we present the synthesis of nanocatalysts with a large surface area. This was achieved through an interaction involving tetraethyl orthosilicate (TEOS) and tripolyphosphate (TPP), followed by the coupling of a ruthenium acetate complex with the click-transformed ligand of filamentous phosphosilicate (FPS). As a result, Ho3Fe5O12 nanoparticles were uniformly distributed without aggregation over FPS, forming Ho3Fe5O12@FPS. This substance was subsequently employed as a green nanocatalyst for the synthesis of cyclic carbonate from carbon dioxide and limonene epoxide whilst adhering to eco-friendly conditions. In the next step, we attempted to synthesize a polymer from synthesized natural cyclic carbonate. The incorporation of threadlike FPS divisions increased the ability to adsorb and aided the retrieval of the adsorbent without notably diminishing its effectiveness. The formed products were easily separated from the eco-friendly medium, and the catalyst was reused many times without a noticeable decrease in its activity and specificity.
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Affiliation(s)
- Fatemeh Shafiezadeh
- Department of Chemistry, Mashhad Branch, Islamic Azad University Mashhad Iran
| | - Ali Javid
- Department of Chemistry, Mashhad Branch, Islamic Azad University Mashhad Iran
| | - Rahele Zhiani
- Department of Chemistry, Neyshabur Branch, Islamic Azad University Neyshabur Iran
- New Materials Technology and Processing Research Centre, Neyshabur Branch, Islamic Azad University Neyshabur Iran
| | - Sadegh Allameh
- Department of Chemistry, Mashhad Branch, Islamic Azad University Mashhad Iran
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4
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Ahmad W, Hou Y, Khan R, Wang L, Zhou S, Wang K, Wan Z, Zhou S, Yan W, Ling M, Liang C. V-Integration Modulates t 2g -Electrons of a Single Crystal Ir 1- x (Ir 0.8 V 0.2 O 2 ) x -BHC for Boosted and Durable OER in Acidic Electrolyte. SMALL METHODS 2023:e2201247. [PMID: 37086116 DOI: 10.1002/smtd.202201247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/13/2023] [Indexed: 05/03/2023]
Abstract
Realizing efficacious π-donation from the O 2p orbital to electron-deficient metal (t2g ) d-orbitals along with separately tuned adsorption of *O and *OOH, is an imperious pre-requisite for an electrocatalyst design to demonstrate boosted oxygen evolution reaction (OER) performance. To regulate the π-donation and the adsorption ability for *O and *OOH, herein, a facile strategy to modulate the electron transfer from electron-rich t2g -orbitals to electron-deficient t2g -orbitals, via strong π-donation from the π-symmetry lone pairs of the bridging O2- , and the d-band center of a biomimetic honeycomb (BHC)-like nanoarchitecture (Ir1- x (Ir0.8 V0.2 O2 )x -BHC) is introduced. The suitable integration of V heteroatoms in the single crystal system of IrO2 decreases the electron density on the neighboring Ir sites, and causes an upshift in the d-band center of Ir1- x (Ir0.8 V0.2 O2 )x -BHC, weakening the adsorption of *O while strengthening that of *OOH, lowers the energy barrier for OER. Therefore, BHC design demonstrates excellent OER performance (shows a small overpotential of 238 mV at 10 mA cm-2 and a Tafel slope of 39.87 mV dec-1 ) with remarkable stability (130 h) in corrosive acidic electrolyte. This work opens a new corridor to design robust biomimetic nanoarchitectures of modulated π-symmetry (t2g ) d-orbitals and the band structure, to achieve excellent activity and durability in acidic environment.
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Affiliation(s)
- Waqar Ahmad
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310058, China
- Institute of Zhejiang University-Quzhou, 78 Jinhua Boulevard, Quzhou, 324000, China
| | - Yunpeng Hou
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310058, China
- Institute of Zhejiang University-Quzhou, 78 Jinhua Boulevard, Quzhou, 324000, China
| | - Rashid Khan
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310058, China
- Institute of Zhejiang University-Quzhou, 78 Jinhua Boulevard, Quzhou, 324000, China
| | - Liguang Wang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310058, China
- Institute of Zhejiang University-Quzhou, 78 Jinhua Boulevard, Quzhou, 324000, China
| | - Shiyu Zhou
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310058, China
- Institute of Zhejiang University-Quzhou, 78 Jinhua Boulevard, Quzhou, 324000, China
| | - Kun Wang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310058, China
- Institute of Zhejiang University-Quzhou, 78 Jinhua Boulevard, Quzhou, 324000, China
| | - Zhengwei Wan
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310058, China
- Institute of Zhejiang University-Quzhou, 78 Jinhua Boulevard, Quzhou, 324000, China
| | - Shaodong Zhou
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310058, China
- Institute of Zhejiang University-Quzhou, 78 Jinhua Boulevard, Quzhou, 324000, China
| | - Wenjun Yan
- School of Automation, Hangzhou Dianzi University, Hangzhou, 310018, China
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Min Ling
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310058, China
- Institute of Zhejiang University-Quzhou, 78 Jinhua Boulevard, Quzhou, 324000, China
| | - Chengdu Liang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310058, China
- Institute of Zhejiang University-Quzhou, 78 Jinhua Boulevard, Quzhou, 324000, China
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5
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Manganese-doped cobalt spinel oxide as bifunctional oxygen electrocatalyst toward high-stable rechargeable Zn-air battery. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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6
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An L, Hu Y, Li J, Zhu J, Sun M, Huang B, Xi P, Yan CH. Tailoring Oxygen Reduction Reaction Pathway on Spinel Oxides via Surficial Geometrical-Site Occupation Modification Driven by the Oxygen Evolution Reaction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2202874. [PMID: 35561062 DOI: 10.1002/adma.202202874] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 05/02/2022] [Indexed: 06/15/2023]
Abstract
The oxygen reduction reaction (ORR) has been demonstrated as a critical technology for both energy conversion technologies and hydrogen peroxide intermediate production. Herein, an in situ oxygen evolution reaction (OER) surface evolution strategy is applied for changing the surface structure of MnCo2 O4 oxide with tetrahedral and octahedral cations vacancies to realize reaction pathway switching from 2e- ORR and 4e- ORR. Interestingly, the as-synthesized MnCo2 O4 -pristine (MnCo2 O4 -P) with the highest surficial Mn/Co octahedron occupation favors two electrons reaction routes exhibiting high H2 O2 selectivity (≈80% and reaches nearly 100% at 0.75 V vs RHE); after surface atoms reconstruction, MnCo2 O4 -activation (MnCo2 O4 -A) with the largest Mn/Co tetrahedron occupation present excellent ORR performance through the four-electron pathway with an ultrahigh onset potential and half-wave potential of 0.78 and 0.92 V, ideal mass activity (MA), and turnover frequencies (TOF) values. Density functional theory (DFT) calculations reveal the concurrent modulations of both Co and Mn by the surface reconstructions, which improve the electroactivity of MnCo2 O4 -A toward the 4e- pathway. This work provides a new perspective to building correlation of OER activation-ORR property, bringing detailed understating for reaction route transformation, and thus guiding the development of certain electrocatalysts with specific purposes.
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Affiliation(s)
- Li An
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Yang Hu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Jianyi Li
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Jiamin Zhu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Mingzi Sun
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Hum, Kowloon, Hong Kong SAR, 999077, China
| | - Bolong Huang
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Hum, Kowloon, Hong Kong SAR, 999077, China
| | - Pinxian Xi
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Chun-Hua Yan
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing, 100871, China
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7
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Wang M, Wa Q, Bai X, He Z, Samarakoon WS, Ma Q, Du Y, Chen Y, Zhou H, Liu Y, Wang X, Feng Z. The Restructuring-Induced CoO x Catalyst for Electrochemical Water Splitting. JACS AU 2021; 1:2216-2223. [PMID: 34977893 PMCID: PMC8715481 DOI: 10.1021/jacsau.1c00346] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Indexed: 05/19/2023]
Abstract
Restructuring is an important yet less understood phenomenon in the catalysis community. Recent studies have shown that a group of transition metal sulfide catalysts can completely or partially restructure during electrochemical reactions which then exhibit high activity even better than the best commercial standards. However, such restructuring processes and the final structures of the new catalysts are elusive, mainly due to the difficulty from the reaction-induced changes that cannot be captured by ex situ characterizations. To establish the true structure-property relationship in these in situ generated catalysts, we use multimodel operando characterizations including Raman spectroscopy, X-ray absorption spectroscopy, and X-ray reflectivity to investigate the restructuring of a representative catalyst, Co9S8, that shows better activity compared to the commercial standard RuO2 during the oxygen evolution reaction (OER), a key half reaction in water-splitting for hydrogen generation. We find that Co9S8 ultimately converts to oxide cluster (CoO x ) containing six oxygen coordinated Co octahedra as the basic unit which is the true catalytic center to promote high OER activity. The density functional theory calculations verify the in situ generated CoO x consisting of edge-sharing CoO6 octahedral clusters as the actual active sites. Our results also provide insights to design other transition-metal-based materials as efficient electrocatalysts that experience a similar restructuring in OER.
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Affiliation(s)
- Maoyu Wang
- School
of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
| | - Qingbo Wa
- School
of Advanced Materials, Shenzhen Graduate
School, Peking University, Shenzhen 518055, China
| | - Xiaowan Bai
- Texas
Materials Institute and Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Zuyun He
- School
of Environment and Energy, South China University
of Technology, Guangzhou 510006, China
| | - Widitha S. Samarakoon
- School
of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
| | - Qing Ma
- DND-CAT,
Synchrotron Research Center, Northwestern
University, Evanston, Illinois 60208, United
States
| | - Yingge Du
- Physical
and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Yan Chen
- School
of Environment and Energy, South China University
of Technology, Guangzhou 510006, China
| | - Hua Zhou
- X-ray
Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
- E-mail:
| | - Yuanyue Liu
- Texas
Materials Institute and Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
- E-mail:
| | - Xinwei Wang
- School
of Advanced Materials, Shenzhen Graduate
School, Peking University, Shenzhen 518055, China
- E-mail:
| | - Zhenxing Feng
- School
of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
- E-mail:
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8
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Ding H, Liu H, Chu W, Wu C, Xie Y. Structural Transformation of Heterogeneous Materials for Electrocatalytic Oxygen Evolution Reaction. Chem Rev 2021; 121:13174-13212. [PMID: 34523916 DOI: 10.1021/acs.chemrev.1c00234] [Citation(s) in RCA: 153] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Electrochemical water splitting for hydrogen generation is a promising pathway for renewable energy conversion and storage. One of the most important issues for efficient water splitting is to develop cost-effective and highly efficient electrocatalysts to drive sluggish oxygen-evolution reaction (OER) at the anode side. Notably, structural transformation such as surface oxidation of metals or metal nonoxide compounds and surface amorphization of some metal oxides during OER have attracted growing attention in recent years. The investigation of structural transformation in OER will contribute to the in-depth understanding of accurate catalytic mechanisms and will finally benefit the rational design of catalytic materials with high activity. In this Review, we provide an overview of heterogeneous materials with obvious structural transformation during OER electrocatalysis. To gain insight into the essence of structural transformation, we summarize the driving forces and critical factors that affect the transformation process. In addition, advanced techniques that are used to probe chemical states and atomic structures of transformed surfaces are also introduced. We then discuss the structure of active species and the relationship between catalytic performance and structural properties of transformed materials. Finally, the challenges and prospects of heterogeneous OER electrocatalysis are presented.
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Affiliation(s)
- Hui Ding
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Hongfei Liu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Wangsheng Chu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, P. R. China
| | - Changzheng Wu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.,Institute of Energy, Hefei Comprehensive National Science Center, Hefei, Anhui 230026, P. R. China
| | - Yi Xie
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.,Institute of Energy, Hefei Comprehensive National Science Center, Hefei, Anhui 230026, P. R. China
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9
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Wan G, Sun CJ, Freeland JW, Fong DD. Defect-Driven Oxide Transformations and the Electrochemical Interphase. Acc Chem Res 2021; 54:3039-3049. [PMID: 34297550 DOI: 10.1021/acs.accounts.1c00248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
ConspectusThe redox reaction pathway is crucial to the sustainable production of the fuels and chemicals required for a carbon-neutral society. Our society is becoming increasingly dependent on devices using batteries and electrolyzers, all of which rely on a series of redox reactions. The overall properties of oxide materials make them very well suited for such electrochemical and catalytic applications due to their associated cationic redox properties and the static site-adsorbate interactions. As these technologies have matured, it has become apparent that defect-driven redox reactions, defect-coupled diffusion, and structural transformations that are both time- and rate-dependent are also critical materials processes. This change in focus, considering not only redox properties but also more complex, dynamic behaviors, represents a new research frontier in the molecular sciences as they are strongly linked to device operation and degradation and lie at the heart of various phenomena that take place at electrochemical interfaces. Fundamental studies of the structural, electronic, and chemical transformation mechanisms are key to the advancement of materials and technological innovations that could be implemented in various electrochemical systems.In this Account, we focus on recent studies and advances in characterizing and understanding the dynamic redox evolution and structural transformations that take place in model perovskites and layered oxides under reactive conditions and correlate them with degradation mechanisms and operations in electrolyzers and batteries. We show that the dynamic evolution of oxygen vacancies and cationic migration in the surface or bulk occurs at the solid-liquid interface, using a combination of different synchrotron-based X-ray spectroscopies and scattering probes. Detailed redox-structure-reactivity correlation studies show how defects and diffusion processes can be tailored to drive various physical and chemical transformations in electrolyzers and batteries. We also highlight a strong correlation between oxygen redox reactivity and structural reorganization in both model thin films and particles, helping to bridge the gap between fundamental studies of the reaction mechanism and device applications. On the basis of these findings, we discuss strategies to probe and tune the redox reactivity and structural stability of the redox-active oxide interphase toward devising efficient pathways for energy and chemical harvesting.
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10
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Zuo S, Li D, Yang F, Xu H, Huang M, Guan Z, Xia D. Copper oxide/graphitic carbon nitride composite for bisphenol a degradation by boosted peroxymonosulfate activation: Mechanism of Cu-O covalency governs. J Colloid Interface Sci 2021; 603:85-93. [PMID: 34186413 DOI: 10.1016/j.jcis.2021.06.099] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/13/2021] [Accepted: 06/15/2021] [Indexed: 10/21/2022]
Abstract
Surface structure can govern heterogeneous catalysis, resulting in its critical role in nonradical reactions. Here, we explored whether Cu-O covalency plays a critical role in controlling the inherent properties of copper oxide/graphitic carbon nitride (CuO-CN). Experiments and theoretical calculations show that, in contrast to the traditional concept of low-valent metal control activity, surface modification enlarges Cu-O covalency, and high-valent copper species at the surface easily bind peroxymonosulfate (PMS, (HSO5-)) anions. Therefore, optimized CuO-CN corresponds to a 14.8-fold higher kinetic reaction rate (0.10392 min-1) for PMS activation and pollutant degradation over those of unoptimized CuO-CN. Based on two-dimensional Fourier transform infrared correlation spectroscopy (2D-FT-IR-COS), Cu-O was determined to be the main active site. Cu-O is more active than other groups and acts before other groups. Benefiting from this electron transfer mechanism, CuO-CN shows good environmental tolerance (pH, anions, humic acid and actual water bodies such as tap water and groundwater). The established empirical kinetic model shows a strong linear correlation with the experimental kinetic reaction rate (> 0.94). CuO-CN/PMS can degrade organic pollutants efficiently for up to 30 days in a filter reactor. This work provides an understanding of the key role of the surface electronic structure in the nonradical activation of PMS and may provide support for improving the design of PMS catalysts.
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Affiliation(s)
- Shiyu Zuo
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, PR China
| | - Dongya Li
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, PR China; Engineering Research Center Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan 430073, PR China.
| | - Fan Yang
- School of Electronic and Electrical Engineering, Wuhan Textile University, Wuhan 430073, PR China
| | - Haiming Xu
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, PR China
| | - Mingzhi Huang
- School of Environment, South China Normal University, Guangzhou 510006, PR China
| | - Zeyu Guan
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, PR China.
| | - Dongsheng Xia
- Engineering Research Center Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan 430073, PR China
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11
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Hess F, Yildiz B. Precipitation of dopants on acceptor-doped LaMnO 3±δ revealed by defect chemistry from first principles. J Chem Phys 2021; 154:064702. [PMID: 33588549 DOI: 10.1063/5.0035691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Perovskite oxides degrade at elevated temperatures while precipitating dopant-rich particles on the surface. A knowledge-based improvement of surface stability requires a fundamental and quantitative understanding of the dopant precipitation mechanism on these materials. We propose that dopant precipitation is a consequence of the variation of dopant solubility between calcination and operating conditions in solid oxide fuel cells (SOFCs) and electrolyzer cells (SOECs). To study dopant precipitation, we use 20% (D = Ca, Sr, Ba)-doped LaMnO3+δ (LDM20) as a model system. We employ a defect model taking input from density functional theory calculations. The defect model considers the equilibration of LDM20 with a reservoir consisting of dopant oxide (DO), peroxide (DO2), and O2 in the gas phase. The equilibrated non-stoichiometry of the A-site and B-site as a function of temperature, T, and oxygen partial pressure, p(O2), reveals three regimes for LDM20: A-site deficient (oxidizing conditions), A-site rich (atmospheric conditions), and near-stoichiometric (reducing conditions). Assuming an initial A/B non-stoichiometry, we compute the dopant precipitation boundaries in a p-T phase diagram. Our model predicts precipitation both under reducing (DO) and under highly oxidizing conditions (DO2). We found precipitation under anodic, SOEC conditions to be promoted by large dopant size, while under cathodic, SOFC conditions precipitation is promoted by initial A-site excess. The main driving forces for precipitation are oxygen uptake by the condensed phase under oxidizing conditions and oxygen release assisted by B-site vacancies under reducing conditions. Possible strategies for mitigating dopant precipitation under in electrolytic and fuel cell conditions are discussed.
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Affiliation(s)
- Franziska Hess
- Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
| | - Bilge Yildiz
- Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
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12
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Guo Z, Li C, Gao M, Han X, Zhang Y, Zhang W, Li W. Mn−O Covalency Governs the Intrinsic Activity of Co‐Mn Spinel Oxides for Boosted Peroxymonosulfate Activation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010828] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zhi‐Yan Guo
- Department of Environmental Science and Engineering University of Science & Technology of China Hefei 230026 China
- USTC-CityU Joint Advanced Research Center Suzhou 215123 China
| | - Chen‐Xuan Li
- Department of Environmental Science and Engineering University of Science & Technology of China Hefei 230026 China
- USTC-CityU Joint Advanced Research Center Suzhou 215123 China
| | - Miao Gao
- Department of Environmental Science and Engineering University of Science & Technology of China Hefei 230026 China
- USTC-CityU Joint Advanced Research Center Suzhou 215123 China
| | - Xiao Han
- Department of Applied Chemistry University of Science & Technology of China Hefei 230026 China
| | - Ying‐Jie Zhang
- Department of Environmental Science and Engineering University of Science & Technology of China Hefei 230026 China
| | - Wen‐Jun Zhang
- Department of Materials Science and Engineering City University of Hong Kong, Hong Kong SAR China
| | - Wen‐Wei Li
- Department of Environmental Science and Engineering University of Science & Technology of China Hefei 230026 China
- USTC-CityU Joint Advanced Research Center Suzhou 215123 China
- National Synchrotron Radiation Laboratory University of Science & Technology of China Hefei 230026 China
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13
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Guo ZY, Li CX, Gao M, Han X, Zhang YJ, Zhang WJ, Li WW. Mn-O Covalency Governs the Intrinsic Activity of Co-Mn Spinel Oxides for Boosted Peroxymonosulfate Activation. Angew Chem Int Ed Engl 2020; 60:274-280. [PMID: 32965786 DOI: 10.1002/anie.202010828] [Citation(s) in RCA: 133] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/11/2020] [Indexed: 11/06/2022]
Abstract
Transition metal (TM)-based bimetallic spinel oxides can efficiently activate peroxymonosulfate (PMS) presumably attributed to enhanced electron transfer between TMs, but the existing model cannot fully explain the efficient TM redox cycling. Here, we discover a critical role of TM-O covalency in governing the intrinsic catalytic activity of Co3-x Mnx O4 spinel oxides. Experimental and theoretical analysis reveals that the Co sites significantly raises the Mn valence and enlarges Mn-O covalency in octahedral configuration, thereby lowering the charge transfer energy to favor MnOh -PMS interaction. With appropriate MnIV /MnIII ratio to balance PMS adsorption and MnIV reduction, the Co1.1 Mn1.9 O4 exhibits remarkable catalytic activities for PMS activation and pollutant degradation, outperforming all the reported TM spinel oxides. The improved understandings on the origins of spinel oxides activity for PMS activation may inspire the development of more active and robust metal oxide catalysts.
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Affiliation(s)
- Zhi-Yan Guo
- Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei, 230026, China.,USTC-CityU Joint Advanced Research Center, Suzhou, 215123, China
| | - Chen-Xuan Li
- Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei, 230026, China.,USTC-CityU Joint Advanced Research Center, Suzhou, 215123, China
| | - Miao Gao
- Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei, 230026, China.,USTC-CityU Joint Advanced Research Center, Suzhou, 215123, China
| | - Xiao Han
- Department of Applied Chemistry, University of Science & Technology of China, Hefei, 230026, China
| | - Ying-Jie Zhang
- Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei, 230026, China
| | - Wen-Jun Zhang
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong SAR, China
| | - Wen-Wei Li
- Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei, 230026, China.,USTC-CityU Joint Advanced Research Center, Suzhou, 215123, China.,National Synchrotron Radiation Laboratory, University of Science & Technology of China, Hefei, 230026, China
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14
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Wang X, Cao R, Chen K, Si C, Ban H, Zhang P, Meng F, Jia L, Mi J, Li Z, Li C. Synthesis Gas Conversion to Lower Olefins over ZnCr‐SAPO‐34 Catalysts: Role of ZnO−ZnCr
2
O
4
Interface. ChemCatChem 2020. [DOI: 10.1002/cctc.202000473] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xiaoyue Wang
- Key Laboratory of Coal Science and Technology Ministry of Education and Shanxi Province Taiyuan University of Technology Taiyuan Shanxi 030024 P.R. China
| | - Ruiwen Cao
- Key Laboratory of Coal Science and Technology Ministry of Education and Shanxi Province Taiyuan University of Technology Taiyuan Shanxi 030024 P.R. China
| | - Kuo Chen
- Key Laboratory of Coal Science and Technology Ministry of Education and Shanxi Province Taiyuan University of Technology Taiyuan Shanxi 030024 P.R. China
- State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 P.R. China
| | - Congcong Si
- Key Laboratory of Coal Science and Technology Ministry of Education and Shanxi Province Taiyuan University of Technology Taiyuan Shanxi 030024 P.R. China
| | - Hongyan Ban
- Key Laboratory of Coal Science and Technology Ministry of Education and Shanxi Province Taiyuan University of Technology Taiyuan Shanxi 030024 P.R. China
| | - Peng Zhang
- Key Laboratory of Coal Science and Technology Ministry of Education and Shanxi Province Taiyuan University of Technology Taiyuan Shanxi 030024 P.R. China
| | - Fanhui Meng
- Key Laboratory of Coal Science and Technology Ministry of Education and Shanxi Province Taiyuan University of Technology Taiyuan Shanxi 030024 P.R. China
| | - Litao Jia
- State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences No.27 South Taoyuan Road Taiyuan Shanxi 030001 P.R. China
| | - Jie Mi
- Key Laboratory of Coal Science and Technology Ministry of Education and Shanxi Province Taiyuan University of Technology Taiyuan Shanxi 030024 P.R. China
| | - Zhong Li
- Key Laboratory of Coal Science and Technology Ministry of Education and Shanxi Province Taiyuan University of Technology Taiyuan Shanxi 030024 P.R. China
| | - Congming Li
- Key Laboratory of Coal Science and Technology Ministry of Education and Shanxi Province Taiyuan University of Technology Taiyuan Shanxi 030024 P.R. China
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15
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Cation insertion to break the activity/stability relationship for highly active oxygen evolution reaction catalyst. Nat Commun 2020; 11:1378. [PMID: 32170137 PMCID: PMC7069983 DOI: 10.1038/s41467-020-15231-x] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 02/25/2020] [Indexed: 12/14/2022] Open
Abstract
The production of hydrogen at a large scale by the environmentally-friendly electrolysis process is currently hampered by the slow kinetics of the oxygen evolution reaction (OER). We report a solid electrocatalyst α-Li2IrO3 which upon oxidation/delithiation chemically reacts with water to form a hydrated birnessite phase, the OER activity of which is five times greater than its non-reacted counterpart. This reaction enlists a bulk redox process during which hydrated potassium ions from the alkaline electrolyte are inserted into the structure while water is oxidized and oxygen evolved. This singular charge balance process for which the electrocatalyst is solid but the reaction is homogeneous in nature allows stabilizing the surface of the catalyst while ensuring stable OER performances, thus breaking the activity/stability tradeoff normally encountered for OER catalysts. Renewable hydrogen production from water will require understanding and improving the oxygen evolution reaction (OER) on catalyst surfaces. Here, authors report α-Li2IrO3 to transform into a hydrated birnessite phase under OER conditions that exhibits enhanced OER performances and durabilities.
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16
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Adeyemi JA, Machado ART, Ogunjimi AT, Alberici LC, Antunes LMG, Barbosa F. Cytotoxicity, mutagenicity, oxidative stress and mitochondrial impairment in human hepatoma (HepG2) cells exposed to copper oxide, copper-iron oxide and carbon nanoparticles. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 189:109982. [PMID: 31830603 DOI: 10.1016/j.ecoenv.2019.109982] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 11/14/2019] [Accepted: 11/15/2019] [Indexed: 06/10/2023]
Abstract
The increasing application of nanomaterials in various fields such as drug delivery, cosmetics, disease detection, cancer treatment, food preservation etc. has resulted in high levels of engineered nanoparticles in the environment, thus leading to higher possibility of direct or indirect interactions between these particles and biological systems. In this study, the toxic effects of three commercially available nanomaterials; copper oxide nanoparticles, copper-iron oxide nanopowders and carbon nanopowders were determined in the human hepatoma HepG2 cells using various toxicological assays which are indicative of cytotoxicity (MTT and neutral red assays), mutagenicity (cytokinesis-block micronucleus assay), oxidative stress (total reactive oxygen species and superoxide anion production) and mitochondrial impairment (cellular oxygen consumption). There was increased cytotoxicity, mutagenicity, and mitochondrial impairment in the cells treated with higher concentrations of the nanomaterials, especially the copper oxide nanoparticles. The fold production of reactive oxygen species was similar at the concentrations tested in this study but longer exposure duration resulted in production of more superoxide anions. The results of this study showed that copper oxide nanoparticles are highly toxic to the human HepG2 cells, thus implying that the liver is a target organ in human for copper oxide nanoparticles toxicity.
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Affiliation(s)
- Joseph A Adeyemi
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida do Café s/nº, CEP, 14040-903, Ribeirão Preto, São Paulo, Brazil; Department of Biology, School of Sciences, Federal University of Technology, P.M.B. 704, Akure, Ondo State, Nigeria
| | - Ana Rita Thomazela Machado
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida do Café s/nº, CEP, 14040-903, Ribeirão Preto, São Paulo, Brazil
| | - Abayomi T Ogunjimi
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, 115 S Grand Avenue, Iowa City, IA, USA
| | - Luciane Carla Alberici
- Department of Physics and Chemistry, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida do Café s/nº, CEP, 14040-903, Ribeirão Preto, São Paulo, Brazil
| | - Lusania Maria Greggi Antunes
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida do Café s/nº, CEP, 14040-903, Ribeirão Preto, São Paulo, Brazil
| | - Fernando Barbosa
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida do Café s/nº, CEP, 14040-903, Ribeirão Preto, São Paulo, Brazil.
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17
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Pang S, Yang G, Jiang X, Shen X, Rao D, Chen C. Insight into tuning the surface and bulk microstructure of perovskite catalyst through control of cation non-stoichiometry. J Catal 2020. [DOI: 10.1016/j.jcat.2019.11.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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18
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Magnetically recoverable catalyst based on porous nanocrystalline HoFeO3 for processes of n-hexane conversion. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2019.10.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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19
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Han N, Zhang C, Tan X, Wang Z, Kawi S, Liu S. Re-evaluation of La0.6Sr0.4Co0.2Fe0.8O3-δ hollow fiber membranes for oxygen separation after long-term storage of five and ten years. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.117180] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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20
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Niedermaier M, Taniteerawong C, Schwab T, Zickler G, Bernardi J, Diwald O. Impurity Segregation and Nanoparticle Reorganization of Indium Doped MgO Cubes. CHEMNANOMAT : CHEMISTRY OF NANOMATERIALS FOR ENERGY, BIOLOGY AND MORE 2019; 5:634-641. [PMID: 31231606 PMCID: PMC6563704 DOI: 10.1002/cnma.201900077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 02/26/2019] [Indexed: 06/09/2023]
Abstract
Metal oxide nanocomposites are non-equilibrium solids and promising precursors for functional materials. Annealing of such materials can provide control over impurity segregation and, depending on the level of consolidation, represents a versatile approach to engineer free surfaces, particle-particle interfaces and grain boundaries. Starting with indium-magnesium-oxide nanoparticle powders obtained via injection of an indium organic precursor into the magnesium combustion flame and subsequent particle quenching in argon, we investigated the stability of the trivalent In3+ ions in the host lattice of MgO nanoparticles by determining grain growth, morphology evolution and impurity segregation. The latter process is initiated by vacuum annealing at 873 K and can be tracked at 1173 K on a time scale of minutes. In the first instance the surface segregated indium wets the nanoparticle interfaces. After prolonged annealing indium evaporates and leaves the powder via the gas phase. Resulting MgO nanocubes are devoid of residual indium, regain their high morphological definition and show spectroscopic fingerprints (UV Diffuse Reflectance and Photoluminescence emission) that are characteristic of electronically unperturbed MgO cube corner and edge features. The results of this combined XRD, TEM, and spectroscopy study reveal the parameter window within which control over indium segregation is used to introduce a semiconducting metal oxide component into the intergranular region between insulating MgO nanograins.
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Affiliation(s)
- Matthias Niedermaier
- Department of Chemistry and Physics of MaterialsUniversity of SalzburgJakob-Haringer-Strasse 2a5020SalzburgAustria
| | - Chatpawee Taniteerawong
- Department of Chemistry and Physics of MaterialsUniversity of SalzburgJakob-Haringer-Strasse 2a5020SalzburgAustria
| | - Thomas Schwab
- Department of Chemistry and Physics of MaterialsUniversity of SalzburgJakob-Haringer-Strasse 2a5020SalzburgAustria
| | - Gregor Zickler
- Department of Chemistry and Physics of MaterialsUniversity of SalzburgJakob-Haringer-Strasse 2a5020SalzburgAustria
| | - Johannes Bernardi
- University Service Centre for Transmission Electron MicroscopyTechnische Universität Wien1040ViennaAustria
| | - Oliver Diwald
- Department of Chemistry and Physics of MaterialsUniversity of SalzburgJakob-Haringer-Strasse 2a5020SalzburgAustria
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21
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Song Y, Zhou S, Dong Q, Li Y, Zhang X, Ta N, Liu Z, Zhao J, Yang F, Wang G, Bao X. Oxygen Evolution Reaction over the Au/YSZ Interface at High Temperature. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814612] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yuefeng Song
- State Key Laboratory of Catalysis CAS Center for Excellence in Nanoscience Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Zhongshan Road 457 Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100039 China
| | - Si Zhou
- Key Laboratory of Materials Modification by Laser, Ions, and Electron Beams (Dalian University of Technology) Ministry of Education Dalian 116024 China
| | - Qiao Dong
- University of Chinese Academy of Sciences Beijing 100039 China
- State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China
| | - Yangsheng Li
- State Key Laboratory of Catalysis CAS Center for Excellence in Nanoscience Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Zhongshan Road 457 Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100039 China
| | - Xiaomin Zhang
- State Key Laboratory of Catalysis CAS Center for Excellence in Nanoscience Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Zhongshan Road 457 Dalian 116023 China
| | - Na Ta
- State Key Laboratory of Catalysis CAS Center for Excellence in Nanoscience Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Zhongshan Road 457 Dalian 116023 China
| | - Zhi Liu
- State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China
| | - Jijun Zhao
- Key Laboratory of Materials Modification by Laser, Ions, and Electron Beams (Dalian University of Technology) Ministry of Education Dalian 116024 China
| | - Fan Yang
- State Key Laboratory of Catalysis CAS Center for Excellence in Nanoscience Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Zhongshan Road 457 Dalian 116023 China
| | - Guoxiong Wang
- State Key Laboratory of Catalysis CAS Center for Excellence in Nanoscience Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Zhongshan Road 457 Dalian 116023 China
| | - Xinhe Bao
- State Key Laboratory of Catalysis CAS Center for Excellence in Nanoscience Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Zhongshan Road 457 Dalian 116023 China
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22
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Song Y, Zhou S, Dong Q, Li Y, Zhang X, Ta N, Liu Z, Zhao J, Yang F, Wang G, Bao X. Oxygen Evolution Reaction over the Au/YSZ Interface at High Temperature. Angew Chem Int Ed Engl 2019; 58:4617-4621. [DOI: 10.1002/anie.201814612] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 02/03/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Yuefeng Song
- State Key Laboratory of Catalysis CAS Center for Excellence in Nanoscience Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Zhongshan Road 457 Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100039 China
| | - Si Zhou
- Key Laboratory of Materials Modification by Laser, Ions, and Electron Beams (Dalian University of Technology) Ministry of Education Dalian 116024 China
| | - Qiao Dong
- University of Chinese Academy of Sciences Beijing 100039 China
- State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China
| | - Yangsheng Li
- State Key Laboratory of Catalysis CAS Center for Excellence in Nanoscience Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Zhongshan Road 457 Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100039 China
| | - Xiaomin Zhang
- State Key Laboratory of Catalysis CAS Center for Excellence in Nanoscience Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Zhongshan Road 457 Dalian 116023 China
| | - Na Ta
- State Key Laboratory of Catalysis CAS Center for Excellence in Nanoscience Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Zhongshan Road 457 Dalian 116023 China
| | - Zhi Liu
- State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China
| | - Jijun Zhao
- Key Laboratory of Materials Modification by Laser, Ions, and Electron Beams (Dalian University of Technology) Ministry of Education Dalian 116024 China
| | - Fan Yang
- State Key Laboratory of Catalysis CAS Center for Excellence in Nanoscience Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Zhongshan Road 457 Dalian 116023 China
| | - Guoxiong Wang
- State Key Laboratory of Catalysis CAS Center for Excellence in Nanoscience Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Zhongshan Road 457 Dalian 116023 China
| | - Xinhe Bao
- State Key Laboratory of Catalysis CAS Center for Excellence in Nanoscience Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Zhongshan Road 457 Dalian 116023 China
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23
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Han N, Wang W, Zhang S, Sunarso J, Zhu Z, Liu S. A novel heterogeneous
La
0.8
Sr
0.2
CoO
3−δ
/(La
0.5
Sr
0.5
)
2
CoO
4+δ
dual‐phase membrane for oxygen separation. ASIA-PAC J CHEM ENG 2018. [DOI: 10.1002/apj.2239] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ning Han
- Department of Chemical Engineering Curtin University Perth WA Australia
| | - Wei Wang
- Department of Chemical Engineering Curtin University Perth WA Australia
| | - Shuguang Zhang
- School of Chemical Engineering Shandong University of Technology Zibo China
| | - Jaka Sunarso
- Research Centre for Sustainable Technologies, Faculty of Engineering, Computing and Science Swinburne University of Technology Kuching Malaysia
| | - Zhonghua Zhu
- School of Chemical Engineering The University of Queensland Brisbane Australia
| | - Shaomin Liu
- Department of Chemical Engineering Curtin University Perth WA Australia
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24
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Wang T, Sun Y, Zhou Y, Sun S, Hu X, Dai Y, Xi S, Du Y, Yang Y, Xu ZJ. Identifying Influential Parameters of Octahedrally Coordinated Cations in Spinel ZnMnxCo2–xO4 Oxides for the Oxidation Reaction. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02376] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ting Wang
- Institute of Advanced Synthesis, Nanjing Tech University, 30 Puzhu South Road, Nanjing 211800, P. R. China
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
- Nanyang Environment and Water Research Institute (NEWRI), Interdisciplinary Graduate School (IGS), Nanyang Technological University, 1 Cleantech Loop, CleanTech One, 637141 Singapore
| | - Yuanmiao Sun
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
| | - Ye Zhou
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
- Solar Fuels Laboratory, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
| | - Shengnan Sun
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
- Solar Fuels Laboratory, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
| | - Xiao Hu
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
- Nanyang Environment and Water Research Institute (NEWRI), Interdisciplinary Graduate School (IGS), Nanyang Technological University, 1 Cleantech Loop, CleanTech One, 637141 Singapore
| | - Yihu Dai
- Institute of Advanced Synthesis, Nanjing Tech University, 30 Puzhu South Road, Nanjing 211800, P. R. China
| | - Shibo Xi
- Institute of Chemical and Engineering Sciences A*STAR, 1 Pesek Road, 627833 Singapore
| | - Yonghua Du
- Institute of Chemical and Engineering Sciences A*STAR, 1 Pesek Road, 627833 Singapore
| | - Yanhui Yang
- Institute of Advanced Synthesis, Nanjing Tech University, 30 Puzhu South Road, Nanjing 211800, P. R. China
| | - Zhichuan J. Xu
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
- Solar Fuels Laboratory, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
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25
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Zhou Y, Sun S, Song J, Xi S, Chen B, Du Y, Fisher AC, Cheng F, Wang X, Zhang H, Xu ZJ. Enlarged CoO Covalency in Octahedral Sites Leading to Highly Efficient Spinel Oxides for Oxygen Evolution Reaction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1802912. [PMID: 29939436 DOI: 10.1002/adma.201802912] [Citation(s) in RCA: 190] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 05/23/2018] [Indexed: 05/14/2023]
Abstract
Cobalt-containing spinel oxides are promising electrocatalysts for the oxygen evolution reaction (OER) owing to their remarkable activity and durability. However, the activity still needs further improvement and related fundamentals remain untouched. The fact that spinel oxides tend to form cation deficiencies can differentiate their electrocatalysis from other oxide materials, for example, the most studied oxygen-deficient perovskites. Here, a systematic study of spinel ZnFex Co2-x O4 oxides (x = 0-2.0) toward the OER is presented and a highly active catalyst superior to benchmark IrO2 is developed. The distinctive OER activity is found to be dominated by the metal-oxygen covalency and an enlarged CoO covalency by 10-30 at% Fe substitution is responsible for the activity enhancement. While the pH-dependent OER activity of ZnFe0.4 Co1.6 O4 (the optimal one) indicates decoupled proton-electron transfers during the OER, the involvement of lattice oxygen is not considered as a favorable route because of the downshifted O p-band center relative to Fermi level governed by the spinel's cation deficient nature.
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Affiliation(s)
- Ye Zhou
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Shengnan Sun
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Jiajia Song
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Shibo Xi
- Institute of Chemical and Engineering Sciences A*STAR, 1 Pesek Road, Singapore, 627833, Singapore
| | - Bo Chen
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Yonghua Du
- Institute of Chemical and Engineering Sciences A*STAR, 1 Pesek Road, Singapore, 627833, Singapore
| | - Adrian C Fisher
- Department of Chemical Engineering, University of Cambridge, Cambridge, CB2 3RA, UK
| | - Fangyi Cheng
- College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Xin Wang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Hua Zhang
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Zhichuan J Xu
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
- Solar Fuels Laboratory and Energy Research Institute, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
- Energy Research Institute@NTU, ERI@N, Interdisciplinary Graduate School, Nanyang Technological University, Singapore, 639798, Singapore
- Singapore-HUJ Alliance for Research and Enterprise, NEW-CREATE Phase II, Campus for Research Excellence and Technological Enterprise (CREATE), Singapore, 138602, Singapore
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26
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Han N, Meng B, Yang N, Sunarso J, Zhu Z, Liu S. Enhancement of oxygen permeation fluxes of La0.6Sr0.4CoO3− hollow fiber membrane via macrostructure modification and (La0.5Sr0.5)2CoO4+ decoration. Chem Eng Res Des 2018. [DOI: 10.1016/j.cherd.2018.04.038] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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27
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Li Y, Zhang W, Zheng Y, Chen J, Yu B, Chen Y, Liu M. Controlling cation segregation in perovskite-based electrodes for high electro-catalytic activity and durability. Chem Soc Rev 2018; 46:6345-6378. [PMID: 28920603 DOI: 10.1039/c7cs00120g] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Solid oxide cell (SOC) based energy conversion systems have the potential to become the cleanest and most efficient systems for reversible conversion between electricity and chemical fuels due to their high efficiency, low emission, and excellent fuel flexibility. Broad implementation of this technology is however hindered by the lack of high-performance electrode materials. While many perovskite-based materials have shown remarkable promise as electrodes for SOCs, cation enrichment or segregation near the surface or interfaces is often observed, which greatly impacts not only electrode kinetics but also their durability and operational lifespan. Since the chemical and structural variations associated with surface enrichment or segregation are typically confined to the nanoscale, advanced experimental and computational tools are required to probe the detailed composition, structure, and nanostructure of these near-surface regions in real time with high spatial and temporal resolutions. In this review article, an overview of the recent progress made in this area is presented, highlighting the thermodynamic driving forces, kinetics, and various configurations of surface enrichment and segregation in several widely studied perovskite-based material systems. A profound understanding of the correlation between the surface nanostructure and the electro-catalytic activity and stability of the electrodes is then emphasized, which is vital to achieving the rational design of more efficient SOC electrode materials with excellent durability. Furthermore, the methodology and mechanistic understanding of the surface processes are applicable to other materials systems in a wide range of applications, including thermo-chemical photo-assisted splitting of H2O/CO2 and metal-air batteries.
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Affiliation(s)
- Yifeng Li
- Institute of Nuclear and New Energy Technology (INET), Tsinghua University, 30 Shuang'qing Road, Beijing 100084, P. R. China.
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28
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Zhou Y, Sun S, Xi S, Duan Y, Sritharan T, Du Y, Xu ZJ. Superexchange Effects on Oxygen Reduction Activity of Edge-Sharing [Co x Mn 1-x O 6 ] Octahedra in Spinel Oxide. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:1705407. [PMID: 29356120 DOI: 10.1002/adma.201705407] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Indexed: 05/20/2023]
Abstract
Mn-Co containing spinel oxides are promising, low-cost electrocatalysts for the oxygen reduction reaction (ORR). Most studies are devoted to the design of porous Mn-Co spinels or to strongly coupled hybrids (e.g., MnCo2 O4 /N-doped-rmGO) to maximize the mass efficiency. The lack of analyses by metal oxide intrinsic activity (activity normalized to catalysts' surface area) hinders the development of fundamental understanding of the physicochemical principles behind the catalytic activities. A systematic study on the composition dependence of ORR in ZnCox Mn2-x O4 (x = 0.0-2.0) spinel is presented here with special attention to the role of edge sharing [Cox Mn1-x O6 ] octahedra in the spinel structure. The ORR specific activity of ZnCox Mn2-x O4 spans across a potential window of 200 mV, indicating an activity difference of ≈3 orders of magnitude. The curve of composition-dependent ORR specific activity as a function of Co substitution exhibits a volcano shape with an optimum Mn/Co ratio of 0.43. It is revealed that the modulated eg occupancy of active Mn cations (0.3-0.9), as a consequence of the superexchange effect between edge sharing [CoO6 ] and [MnO6 ], reflects the ORR activity of edge sharing [Cox Mn1-x O6 ] octahedra in the ZnCox Mn2-x O4 spinel oxide. These findings offer crucial insights in designing spinel oxide catalysts with fine-tuned eg occupancy for efficient catalysis.
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Affiliation(s)
- Ye Zhou
- School of Materials Science & Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Shengnan Sun
- School of Materials Science & Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Shibo Xi
- Institute of Chemical and Engineering Sciences A*STAR, 1 Pesek Road, Singapore, 627833, Singapore
| | - Yan Duan
- School of Materials Science & Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Thirumany Sritharan
- School of Materials Science & Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Yonghua Du
- Institute of Chemical and Engineering Sciences A*STAR, 1 Pesek Road, Singapore, 627833, Singapore
| | - Zhichuan J Xu
- School of Materials Science & Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
- Solar Fuel Laboratory, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
- Energy Research Institute @ Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
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29
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Andersen TK, Cook S, Wan G, Hong H, Marks LD, Fong DD. Layer-by-Layer Epitaxial Growth of Defect-Engineered Strontium Cobaltites. ACS APPLIED MATERIALS & INTERFACES 2018; 10:5949-5958. [PMID: 29346722 DOI: 10.1021/acsami.7b16970] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Control over structure and composition of (ABO3) perovskite oxides offers exciting opportunities since these materials possess unique, tunable properties. Perovskite oxides with cobalt B-site cations are particularly promising, as the range of the cation's stable oxidation states leads to many possible structural frameworks. Here, we report growth of strontium cobalt oxide thin films by molecular beam epitaxy, and conditions necessary to stabilize different defect concentration phases. In situ X-ray scattering is used to monitor structural evolution during growth, while in situ X-ray absorption near-edge spectroscopy is used to probe oxidation state and measure changes to oxygen vacancy concentration as a function of film thickness. Experimental results are compared to kinetically limited thermodynamic predictions, in particular, solute trapping, with semiquantitative agreement. Agreement between observations of dependence of cobaltite phase on oxidation activity and deposition rate, and predictions indicates that a combined experimental/theoretical approach is key to understanding phase behavior in the strontium cobalt oxide system.
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Affiliation(s)
- Tassie K Andersen
- Materials Science Division, Argonne National Laboratory , Argonne, Illinois 60439, United States
- Department of Materials Science and Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - Seyoung Cook
- Materials Science Division, Argonne National Laboratory , Argonne, Illinois 60439, United States
- Department of Materials Science and Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - Gang Wan
- Materials Science Division, Argonne National Laboratory , Argonne, Illinois 60439, United States
| | - Hawoong Hong
- Advanced Photon Source, Argonne National Laboratory , Argonne, Illinois 60439, United States
| | - Laurence D Marks
- Department of Materials Science and Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - Dillon D Fong
- Materials Science Division, Argonne National Laboratory , Argonne, Illinois 60439, United States
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30
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Active sites of copper-complex catalytic materials for electrochemical carbon dioxide reduction. Nat Commun 2018; 9:415. [PMID: 29379087 PMCID: PMC5788987 DOI: 10.1038/s41467-018-02819-7] [Citation(s) in RCA: 344] [Impact Index Per Article: 49.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 01/02/2018] [Indexed: 11/08/2022] Open
Abstract
Restructuring-induced catalytic activity is an intriguing phenomenon of fundamental importance to rational design of high-performance catalyst materials. We study three copper-complex materials for electrocatalytic carbon dioxide reduction. Among them, the copper(II) phthalocyanine exhibits by far the highest activity for yielding methane with a Faradaic efficiency of 66% and a partial current density of 13 mA cm−2 at the potential of – 1.06 V versus the reversible hydrogen electrode. Utilizing in-situ and operando X-ray absorption spectroscopy, we find that under the working conditions copper(II) phthalocyanine undergoes reversible structural and oxidation state changes to form ~ 2 nm metallic copper clusters, which catalyzes the carbon dioxide-to-methane conversion. Density functional calculations rationalize the restructuring behavior and attribute the reversibility to the strong divalent metal ion–ligand coordination in the copper(II) phthalocyanine molecular structure and the small size of the generated copper clusters under the reaction conditions. The catalytic conversion of carbon dioxide into value-added products requires an understanding of the active species present under working conditions. Here, the authors discover copper-containing complexes to reversibly transform during electrocatalysis into methane-producing copper nanoclusters.
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31
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Wang H, Xu K, Yao X, Ye D, Pei Y, Hu H, Qiao M, Li ZH, Zhang X, Zong B. Undercoordinated Site-Abundant and Tensile-Strained Nickel for Low-Temperature COx Methanation. ACS Catal 2018. [DOI: 10.1021/acscatal.7b02944] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hao Wang
- Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative
Materials, Fudan University, Shanghai 200433, People’s Republic of China
| | - Ke Xu
- Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative
Materials, Fudan University, Shanghai 200433, People’s Republic of China
- State
Key Laboratory of Catalytic Materials and Chemical Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, People’s Republic of China
| | - Xuanyu Yao
- Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative
Materials, Fudan University, Shanghai 200433, People’s Republic of China
| | - Danhong Ye
- Shanghai Institute of Space Power-Sources, Shanghai 200245, People’s Republic of China
| | - Yan Pei
- Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative
Materials, Fudan University, Shanghai 200433, People’s Republic of China
| | - Huarong Hu
- Shanghai Institute of Space Power-Sources, Shanghai 200245, People’s Republic of China
| | - Minghua Qiao
- Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative
Materials, Fudan University, Shanghai 200433, People’s Republic of China
| | - Zhen Hua Li
- Collaborative
Innovation Center of Chemistry for Energy Materials, Department of
Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative
Materials, Fudan University, Shanghai 200433, People’s Republic of China
| | - Xiaoxin Zhang
- State
Key Laboratory of Catalytic Materials and Chemical Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, People’s Republic of China
| | - Baoning Zong
- State
Key Laboratory of Catalytic Materials and Chemical Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, People’s Republic of China
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32
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Montoya JH, Doyle AD, Nørskov JK, Vojvodic A. Trends in adsorption of electrocatalytic water splitting intermediates on cubic ABO3 oxides. Phys Chem Chem Phys 2018; 20:3813-3818. [DOI: 10.1039/c7cp06539f] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The reactivity of solid oxide surfaces towards adsorption of oxygen and hydrogen is a key metric for the design of new catalysts for electrochemical water splitting.
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Affiliation(s)
- Joseph H. Montoya
- Energy Technologies Area
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
- SUNCAT Center for Interface Science and Catalysis
| | - Andrew D. Doyle
- SUNCAT Center for Interface Science and Catalysis
- Department of Chemical Engineering
- Stanford University
- Shriram Center
- Stanford
| | - Jens K. Nørskov
- SUNCAT Center for Interface Science and Catalysis
- Department of Chemical Engineering
- Stanford University
- Shriram Center
- Stanford
| | - Aleksandra Vojvodic
- Department of Chemical and Biomolecular Engineering
- University of Pennsylvania
- Philadelphia
- USA
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33
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Zhou Y, Xi S, Wang J, Sun S, Wei C, Feng Z, Du Y, Xu ZJ. Revealing the Dominant Chemistry for Oxygen Reduction Reaction on Small Oxide Nanoparticles. ACS Catal 2017. [DOI: 10.1021/acscatal.7b03864] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Ye Zhou
- School
of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
- Solar
Fuels Laboratory, Nanyang Technological University, 50 Nanyang
Avenue, 639798 Singapore
| | - Shibo Xi
- Institute
of Chemical and Engineering Sciences, A*STAR, 1 Pesek Road, 627833 Singapore
| | - Jingxian Wang
- School
of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
| | - Shengnan Sun
- School
of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
- Solar
Fuels Laboratory, Nanyang Technological University, 50 Nanyang
Avenue, 639798 Singapore
| | - Chao Wei
- School
of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
- Solar
Fuels Laboratory, Nanyang Technological University, 50 Nanyang
Avenue, 639798 Singapore
| | - Zhenxing Feng
- School
of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
| | - Yonghua Du
- Institute
of Chemical and Engineering Sciences, A*STAR, 1 Pesek Road, 627833 Singapore
| | - Zhichuan J. Xu
- School
of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
- Solar
Fuels Laboratory, Nanyang Technological University, 50 Nanyang
Avenue, 639798 Singapore
- Energy
Research Institute @ Nanyang Technological University, 50 Nanyang
Avenue, 639798 Singapore
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34
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Cho MK, Lim A, Lee SY, Kim HJ, Yoo SJ, Sung YE, Park HS, Jang JH. A Review on Membranes and Catalysts for Anion Exchange Membrane Water Electrolysis Single Cells. J ELECTROCHEM SCI TE 2017. [DOI: 10.33961/jecst.2017.8.3.183] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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35
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Paloukis F, Papazisi KM, Dintzer T, Papaefthimiou V, Saveleva VA, Balomenou SP, Tsiplakides D, Bournel F, Gallet JJ, Zafeiratos S. Insights into the Surface Reactivity of Cermet and Perovskite Electrodes in Oxidizing, Reducing, and Humid Environments. ACS APPLIED MATERIALS & INTERFACES 2017; 9:25265-25277. [PMID: 28683200 DOI: 10.1021/acsami.7b05721] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Understanding the surface chemistry of electrode materials under gas environments is important in order to control their performance during electrochemical and catalytic applications. This work compares the surface reactivity of Ni/YSZ and La0.75Sr0.25Cr0.9Fe0.1O3, which are commonly used types of electrodes in solid oxide electrochemical devices. In situ synchrotron-based near-ambient pressure photoemission and absorption spectroscopy experiments, assisted by theoretical spectral simulations and combined with microscopy and electrochemical measurements, are used to monitor the effect of the gas atmosphere on the chemical state, the morphology, and the electrical conductivity of the electrodes. It is shown that the surface of both electrode types readjusts fast to the reactive gas atmosphere and their surface composition is notably modified. In the case of Ni/YSZ, this is followed by evident changes in the oxidation state of nickel, while for La0.75Sr0.25Cr0.9Fe0.1O3, a fine adjustment of the Cr valence and strong Sr segregation is observed. An important difference between the two electrodes is their capacity to maintain adsorbed hydroxyl groups on their surface, which is expected to be critical for the electrocatalytic properties of the materials. The insight gained from the surface analysis may serve as a paradigm for understanding the effect of the gas environment on the electrochemical performance and the electrical conductivity of the electrodes.
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Affiliation(s)
- Fotios Paloukis
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé, UMR 7515 CNRS-UdS , 25 Rue Becquerel, 67087 Strasbourg, France
| | - Kalliopi M Papazisi
- Chemical Process and Energy Resources Institute/CERTH , 6th km Charilaou-Thermi Road, 57001 Thessaloniki, Greece
| | - Thierry Dintzer
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé, UMR 7515 CNRS-UdS , 25 Rue Becquerel, 67087 Strasbourg, France
| | - Vasiliki Papaefthimiou
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé, UMR 7515 CNRS-UdS , 25 Rue Becquerel, 67087 Strasbourg, France
| | - Viktoriia A Saveleva
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé, UMR 7515 CNRS-UdS , 25 Rue Becquerel, 67087 Strasbourg, France
| | - Stella P Balomenou
- Chemical Process and Energy Resources Institute/CERTH , 6th km Charilaou-Thermi Road, 57001 Thessaloniki, Greece
| | - Dimitrios Tsiplakides
- Chemical Process and Energy Resources Institute/CERTH , 6th km Charilaou-Thermi Road, 57001 Thessaloniki, Greece
- Department of Chemistry, Aristotle University of Thessaloniki , 54124 Thessaloniki, Greece
| | - Fabrice Bournel
- Laboratoire de Chimie Physique-Matière et Rayonnement, Sorbonne Universités, UPMC Universite Paris 06, CNRS , 4 place Jussieu, 75005 Paris, France
- Synchrotron SOLEIL , L'orme des Merisiers, B.P. 48, Saint Aubin, Gif-sur-Yvette, Cedex 91192, France
| | - Jean-Jacques Gallet
- Laboratoire de Chimie Physique-Matière et Rayonnement, Sorbonne Universités, UPMC Universite Paris 06, CNRS , 4 place Jussieu, 75005 Paris, France
- Synchrotron SOLEIL , L'orme des Merisiers, B.P. 48, Saint Aubin, Gif-sur-Yvette, Cedex 91192, France
| | - Spyridon Zafeiratos
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé, UMR 7515 CNRS-UdS , 25 Rue Becquerel, 67087 Strasbourg, France
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36
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Wang X, Wang C, Pan M, Wei J, Jiang F, Lu R, Liu X, Huang Y, Huang F. Chaperonin-Nanocaged Hemin as an Artificial Metalloenzyme for Oxidation Catalysis. ACS APPLIED MATERIALS & INTERFACES 2017; 9:25387-25396. [PMID: 28703007 DOI: 10.1021/acsami.7b08963] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Taking inspiration from biology's effectiveness in functionalizing protein-based nanocages for chemical processes, we describe here a rational design of an artificial metalloenzyme for oxidations with the bacterial chaperonin GroEL, a nanocage for protein folding in nature, by supramolecular anchoring of catalytically active hemin in its hydrophobic central cavity. The promiscuity of the chaperonin cavity is an essential element of this design, which can mimic the hydrophobic binding pocket in natural metalloenzymes to accept cofactor and substrate without requiring specific ligand-protein interactions. The success of this approach is manifested in the efficient loading of multiple monomeric hemin cofactors to the GroEL cavity by detergent dialysis and good catalytic oxidation properties of the resulting biohybrid in tandem with those of the clean oxidant of H2O2. Investigation of the mechanism of hemin-GroEL-catalyzed oxidation of two-model substrates reveals that the kinetic behavior of the complex follows a ping-pong mechanism in both cases. Through comparison with horseradish peroxidase, the oxidative activity and stability of hemin-GroEL were observed to be similar to those found in natural peroxidases. Adenosine 5'-triphosphate (ATP)-regulated partial dissociation of the biohybrid, as assessed by the reduction of its catalytic activity with the addition of the nucleotide, raises the prospect that ATP may be used to recycle the chaperonin scaffold. Moreover, hemin-GroEL can be applied to the chromogenic detection of H2O2, which (or peroxide in general) is commonly contained in industrial wastes. Considering the rich chemistry of free metalloporphyrins and the ease of production of GroEL and its supramolecular complex with hemin, this work should seed the creation of many new artificial metalloenzymes with diverse reactivities.
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Affiliation(s)
- Xiaoqiang Wang
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China) , Qingdao 266580, P. R. China
| | - Chao Wang
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China) , Qingdao 266580, P. R. China
| | - Meihong Pan
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China) , Qingdao 266580, P. R. China
| | - Junting Wei
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China) , Qingdao 266580, P. R. China
| | - Fuping Jiang
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China) , Qingdao 266580, P. R. China
| | - Rongsheng Lu
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China) , Qingdao 266580, P. R. China
| | - Xuan Liu
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China) , Qingdao 266580, P. R. China
| | - Yihui Huang
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China) , Qingdao 266580, P. R. China
| | - Fang Huang
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China) , Qingdao 266580, P. R. China
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37
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Wei C, Feng Z, Scherer GG, Barber J, Shao-Horn Y, Xu ZJ. Cations in Octahedral Sites: A Descriptor for Oxygen Electrocatalysis on Transition-Metal Spinels. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1606800. [PMID: 28394440 DOI: 10.1002/adma.201606800] [Citation(s) in RCA: 262] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 02/10/2017] [Indexed: 05/20/2023]
Abstract
Exploring efficient and low-cost electrocatalysts for the oxygen-reduction reaction (ORR) and oxygen-evolution reaction (OER) is critical for developing renewable energy technologies such as fuel cells, metal-air batteries, and water electrolyzers. A rational design of a catalyst can be guided by identifying descriptors that determine its activity. Here, a descriptor study on the ORR/OER of spinel oxides is presented. With a series of MnCo2 O4 , the Mn in octahedral sites is identified as an active site. This finding is then applied to successfully explain the ORR/OER activities of other transition-metal spinels, including Mnx Co3-x O4 (x = 2, 2.5, 3), Lix Mn2 O4 (x = 0.7, 1), XCo2 O4 (X = Co, Ni, Zn), and XFe2 O4 (X = Mn, Co, Ni). A general principle is concluded that the eg occupancy of the active cation in the octahedral site is the activity descriptor for the ORR/OER of spinels, consolidating the role of electron orbital filling in metal oxide catalysis.
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Affiliation(s)
- Chao Wei
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| | - Zhenxing Feng
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR, 97331, USA
| | | | - James Barber
- Department of Life Sciences, Imperial College London, London, SW7 2AZ, UK
- Solar Fuels Laboratory, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| | - Yang Shao-Horn
- Materials Science and Engineering Department, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Electrochemical Energy Laboratory, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Zhichuan J Xu
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
- Solar Fuels Laboratory, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
- Energy Research Institute @ Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
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38
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Lin CC, McCrory CCL. Effect of Chromium Doping on Electrochemical Water Oxidation Activity by Co3–xCrxO4 Spinel Catalysts. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02170] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Chia-Cheng Lin
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Charles C. L. McCrory
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
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39
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Pan B, Feng Z, Sa N, Han SD, Ma Q, Fenter P, Vaughey JT, Zhang Z, Liao C. Advanced hybrid battery with a magnesium metal anode and a spinel LiMn2O4 cathode. Chem Commun (Camb) 2016; 52:9961-4. [DOI: 10.1039/c6cc04133g] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two Mg–Li dual salt hybrid electrolytes are developed, which exhibit excellent oxidative stability up to around 3.8 V (vs. Mg/Mg2+) on Al, and were successfully applied in hybrid Mg–Li cells with lithium-ion intercalation cathodes and magnesium metal anodes.
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Affiliation(s)
- Baofei Pan
- Joint Center for Energy Storage Research
- Chemical Sciences and Engineering Division
- Argonne National Laboratory
- Lemont
- USA
| | - Zhenxing Feng
- Joint Center for Energy Storage Research
- Chemical Sciences and Engineering Division
- Argonne National Laboratory
- Lemont
- USA
| | - Niya Sa
- Joint Center for Energy Storage Research
- Chemical Sciences and Engineering Division
- Argonne National Laboratory
- Lemont
- USA
| | - Sang-Don Han
- Joint Center for Energy Storage Research
- Chemical Sciences and Engineering Division
- Argonne National Laboratory
- Lemont
- USA
| | - Qing Ma
- DND-CAT
- Synchrotron Research Center
- Argonne National Laboratory
- Lemont
- USA
| | - Paul Fenter
- Joint Center for Energy Storage Research
- Chemical Sciences and Engineering Division
- Argonne National Laboratory
- Lemont
- USA
| | - John T. Vaughey
- Joint Center for Energy Storage Research
- Chemical Sciences and Engineering Division
- Argonne National Laboratory
- Lemont
- USA
| | - Zhengcheng Zhang
- Joint Center for Energy Storage Research
- Chemical Sciences and Engineering Division
- Argonne National Laboratory
- Lemont
- USA
| | - Chen Liao
- Joint Center for Energy Storage Research
- Chemical Sciences and Engineering Division
- Argonne National Laboratory
- Lemont
- USA
| |
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