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Jia H, Yao N, Jin Y, Wu L, Zhu J, Luo W. Stabilizing atomic Ru species in conjugated sp 2 carbon-linked covalent organic framework for acidic water oxidation. Nat Commun 2024; 15:5419. [PMID: 38926414 PMCID: PMC11208516 DOI: 10.1038/s41467-024-49834-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 06/20/2024] [Indexed: 06/28/2024] Open
Abstract
Suppressing the kinetically favorable lattice oxygen oxidation mechanism pathway and triggering the adsorbate evolution mechanism pathway at the expense of activity are the state-of-the-art strategies for Ru-based electrocatalysts toward acidic water oxidation. Herein, atomically dispersed Ru species are anchored into an acidic stable vinyl-linked 2D covalent organic framework with unique crossed π-conjugation, termed as COF-205-Ru. The crossed π-conjugated structure of COF-205-Ru not only suppresses the dissolution of Ru through strong Ru-N motifs, but also reduces the oxidation state of Ru by multiple π-conjugations, thereby activating the oxygen coordinated to Ru and stabilizing the oxygen vacancies during oxygen evolution process. Experimental results including X-ray absorption spectroscopy, in situ Raman spectroscopy, in situ powder X-ray diffraction patterns, and theoretical calculations unveil the activated oxygen with elevated energy level of O 2p band, decreased oxygen vacancy formation energy, promoted electrochemical stability, and significantly reduced energy barrier of potential determining step for acidic water oxidation. Consequently, the obtained COF-205-Ru displays a high mass activity with 2659.3 A g-1, which is 32-fold higher than the commercial RuO2, and retains long-term durability of over 280 h. This work provides a strategy to simultaneously promote the stability and activity of Ru-based catalysts for acidic water oxidation.
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Affiliation(s)
- Hongnan Jia
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, PR China
| | - Na Yao
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan, Hubei, 430073, PR China
| | - Yiming Jin
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, PR China
| | - Liqing Wu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, PR China
| | - Juan Zhu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, PR China
| | - Wei Luo
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, PR China.
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2
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Zhu S, Yang R, Li HJW, Huang S, Wang H, Liu Y, Li H, Zhai T. Reconstructing Hydrogen-Bond Network for Efficient Acidic Oxygen Evolution. Angew Chem Int Ed Engl 2024; 63:e202319462. [PMID: 38286750 DOI: 10.1002/anie.202319462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 01/24/2024] [Accepted: 01/29/2024] [Indexed: 01/31/2024]
Abstract
Developing highly active oxygen evolution reaction (OER) catalysts in acidic conditions is a pressing demand for proton-exchange membrane water electrolysis. Manipulating proton character at the electrified interface, as the crux of all proton-coupled electrochemical reactions, is highly desirable but elusive. Herein we present a promising protocol, which reconstructs a connected hydrogen-bond network between the catalyst-electrolyte interface by coupling hydrophilic units to boost acidic OER activity. Modelling on N-doped-carbon-layer clothed Mn-doped-Co3O4 (Mn-Co3O4@CN), we unravel that the hydrogen-bond interaction between CN units and H2O molecule not only drags the free water to enrich the surface of Mn-Co3O4 but also serves as a channel to promote the dehydrogenation process. Meanwhile, the modulated local charge of the Co sites from CN units/Mn dopant lowers the OER barrier. Therefore, Mn-Co3O4@CN surpasses RuO2 at high current density (100 mA cm-2 @ ~538 mV).
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Affiliation(s)
- Shicheng Zhu
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Ruoou Yang
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Huang Jing Wei Li
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Sirui Huang
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Haozhi Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, and School of Materials Science and Engineering, Hainan University, Haikou, Hainan, 570228, P. R. China
| | - Youwen Liu
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Huiqiao Li
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Tianyou Zhai
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
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3
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Jia W, Cao X, Chen X, Qin H, Miao L, Wang Q, Jiao L. γ-MnO 2 as an Electron Reservoir for RuO 2 Oxygen Evolution Catalyst in Acidic Media. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2310464. [PMID: 38597768 DOI: 10.1002/smll.202310464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 03/24/2024] [Indexed: 04/11/2024]
Abstract
Developing highly active and durable catalysts in acid conditions remains an urgent issue due to the sluggish kinetics of oxygen evolution reaction (OER). Although RuO2 has been a state-of-the-art commercial catalyst for OER, it encounters poor stability and high cost. In this study, the electronic reservoir regulation strategy is proposed to promote the performance of acidic water oxidation via constructing a RuO2/MnO2 heterostructure supported on carbon cloth (CC) (abbreviated as RuO2/MnO2/CC). Theoretical and experimental results reveal that MnO2 acts as an electron reservoir for RuO2. It facilitates electron transfer from RuO2, enhancing its activity prior to OER, and donates electrons to RuO2, improving its stability after OER. Consequently, RuO2/MnO2/CC exhibits better performance compared to commercial RuO2, with an ultrasmall overpotential of 189 mV at 10 mA cm-2 and no signs of deactivation even after 800 h of electrolysis in 0.5 m H2SO4 at 10 mA cm-2. When applied as the anode in a proton exchange membrane water electrolyzer, the cost-efficient RuO2/MnO2/CC catalyst only requires a cell voltage of 1.661 V to achieve the water-splitting current of 1 A cm-2, and the noble metal cost is as low as US$ 0.00962 cm-2, indicating potential for practical applications.
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Affiliation(s)
- Wenqi Jia
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Xuejie Cao
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Xiaojie Chen
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Hongye Qin
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Licheng Miao
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Qinglun Wang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Lifang Jiao
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China
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4
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Liu K, Li H, Xie M, Wang P, Jin Z, Liu Y, Zhou M, Li P, Yu G. Thermally Enhanced Relay Electrocatalysis of Nitrate-to-Ammonia Reduction over Single-Atom-Alloy Oxides. J Am Chem Soc 2024; 146:7779-7790. [PMID: 38466142 DOI: 10.1021/jacs.4c00429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
The electrochemical nitrate reduction reaction (NO3RR) holds promise for converting nitrogenous pollutants to valuable ammonia products. However, conventional electrocatalysis faces challenges in effectively driving the complex eight-electron and nine-proton transfer process of the NO3RR while also competing with the hydrogen evolution reaction. In this study, we present the thermally enhanced electrocatalysis of nitrate-to-ammonia conversion over nickel-modified copper oxide single-atom alloy oxide nanowires. The catalyst demonstrates improved ammonia production performance with a Faradaic efficiency of approximately 80% and a yield rate of 9.7 mg h-1 cm-2 at +0.1 V versus a reversible hydrogen electrode at elevated cell temperatures. In addition, this thermally enhanced electrocatalysis system displays impressive stability, interference resistance, and favorable energy consumption and greenhouse gas emissions for the simulated industrial wastewater treatment. Complementary in situ analyses confirm that the significantly superior relay of active hydrogen species formed at Ni sites facilitates the thermal-field-coupled electrocatalysis of Cu surface-adsorbed *NOx hydrogenation. Theoretical calculations further support the thermodynamic and kinetic feasibility of the relay catalysis mechanism for the NO3RR over the Ni1Cu model catalyst. This study introduces a conceptual thermal-electrochemistry approach for the synergistic regulation of complex catalytic processes, highlighting the potential of multifield-coupled catalysis to advance sustainable-energy-powered chemical synthesis technologies.
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Affiliation(s)
- Kui Liu
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Hongmei Li
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Minghao Xie
- Materials Science and Engineering Program and Walker Department of Mechanical Engineering, the University of Texas at Austin, Austin, Texas 78712, United States
| | - Pengfei Wang
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Zhaoyu Jin
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Yuanting Liu
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Min Zhou
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China
| | - Panpan Li
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Guihua Yu
- Materials Science and Engineering Program and Walker Department of Mechanical Engineering, the University of Texas at Austin, Austin, Texas 78712, United States
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5
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Pang H, Yu Z, Qin X, Fan B, Jiang R, Li S, Hou Y, Tang W, Wang M, Shi Z. Adjusting the valence band center of Co-Ni-bimetallic sulfides through lattice expansion and stacking faults triggered by strain engineering to boost oxygen evolution reaction. J Colloid Interface Sci 2023; 646:503-516. [PMID: 37209550 DOI: 10.1016/j.jcis.2023.05.071] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 05/06/2023] [Accepted: 05/11/2023] [Indexed: 05/22/2023]
Abstract
Stress engineering can improve catalytic performance by straining the catalyst lattice. An electrocatalyst, Co3S4/Ni3S2-10%Mo@NC, was prepared with abundant lattice distortion to boost oxygen evolution reaction (OER). With the assistance of the intramolecular steric hindrance effect of metal-organic frameworks, slow dissolution by MoO42- of the Ni substrate and recrystallization of Ni2+ was observed in the process of Co(OH)F crystal growth with mild temperature and short time reaction. The lattice expansion and stacking faults created defects inside the Co3S4 crystal, improved the material conductivity, optimized the valence band electron distribution of the material, and promoted the rapid conversion of the reaction intermediates. The presence of reactive intermediates of the OER under catalytic conditions was investigated using operando Raman spectroscopy. The electrocatalysts exhibited super high performance, a current density of 10 mA cm-2 at an overpotential of 164 mV and 100 mA cm-2 at 223 mV, which were comparable to those of integrated RuO2. Our work for the first time demonstrates that the dissolution-recrystallization triggered by strain engineering is a good modulation approach to adjust the structure and surface activity of catalyst, suggesting promising industrial application.
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Affiliation(s)
- Han Pang
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P.R.China
| | - Zebin Yu
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P.R.China.
| | - Xuanning Qin
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P.R.China
| | - Ben Fan
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P.R.China
| | - Ronghua Jiang
- School of Chemical and Environmental Engineering, Shaoguan University, Shaoguan 512005, P. R. China
| | - Shuang Li
- School of Environmental Science and Technology, Dalian University of Technology, Dalian 116023, P. R. China
| | - Yanping Hou
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P.R.China
| | - Wenjun Tang
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P.R.China
| | - Mi Wang
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P.R.China
| | - Zhikai Shi
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P.R.China
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6
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Ke J, Chi M, Zhao J, Liu Y, Wang R, Fan K, Zhou Y, Xi Z, Kong X, Li H, Zeng J, Geng Z. Dynamically Reversible Interconversion of Molecular Catalysts for Efficient Electrooxidation of Propylene into Propylene Glycol. J Am Chem Soc 2023; 145:9104-9111. [PMID: 36944146 DOI: 10.1021/jacs.3c00660] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
For the electrooxidation of propylene into 1,2-propylene glycol (PG), the process involves two key steps of the generation of *OH and the transfer of *OH to the C═C bond in propylene. The strong *OH binding energy (EB(*OH)) favors the dissociation of H2O into *OH, whereas the transfer of *OH to propylene will be impeded. The scaling relationship of the EB(*OH) plays a key role in affecting the catalytic performance toward propylene electrooxidation. Herein, we adopt an immobilized Ag pyrazole molecular catalyst (denoted as AgPz) as the electrocatalyst. The pyrrolic N-H in AgPz could undergo deprotonation to form pyrrolic N (denoted as AgPz-Hvac), which can be protonated reversibly. During propylene electrooxidation, the strong EB(*OH) on AgPz favors the dissociation of H2O into *OH. Subsequently, the AgPz transforms into AgPz-Hvac that possesses weak EB(*OH), benefiting to the further combination of *OH and propylene. The dynamically reversible interconversion between AgPz and AgPz-Hvac accompanied by changeable EB(*OH) breaks the scaling relationship, thus greatly lowering the reaction barrier. At 2.0 V versus Ag/AgCl electrode, AgPz achieves a remarkable yield rate of 288.9 mmolPG gcat-1 h-1, which is more than one order of magnitude higher than the highest value ever reported.
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Affiliation(s)
- Jingwen Ke
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Mingfang Chi
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Jiankang Zhao
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yan Liu
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Ruyang Wang
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Kaiyuan Fan
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yuxuan Zhou
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhikai Xi
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Xiangdong Kong
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Hongliang Li
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Jie Zeng
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
- School of Chemistry & Chemical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243002, P. R. China
| | - Zhigang Geng
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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7
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Zhao Y, Adiyeri Saseendran DP, Huang C, Triana CA, Marks WR, Chen H, Zhao H, Patzke GR. Oxygen Evolution/Reduction Reaction Catalysts: From In Situ Monitoring and Reaction Mechanisms to Rational Design. Chem Rev 2023; 123:6257-6358. [PMID: 36944098 DOI: 10.1021/acs.chemrev.2c00515] [Citation(s) in RCA: 50] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
The oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) are core steps of various energy conversion and storage systems. However, their sluggish reaction kinetics, i.e., the demanding multielectron transfer processes, still render OER/ORR catalysts less efficient for practical applications. Moreover, the complexity of the catalyst-electrolyte interface makes a comprehensive understanding of the intrinsic OER/ORR mechanisms challenging. Fortunately, recent advances of in situ/operando characterization techniques have facilitated the kinetic monitoring of catalysts under reaction conditions. Here we provide selected highlights of recent in situ/operando mechanistic studies of OER/ORR catalysts with the main emphasis placed on heterogeneous systems (primarily discussing first-row transition metals which operate under basic conditions), followed by a brief outlook on molecular catalysts. Key sections in this review are focused on determination of the true active species, identification of the active sites, and monitoring of the reactive intermediates. For in-depth insights into the above factors, a short overview of the metrics for accurate characterizations of OER/ORR catalysts is provided. A combination of the obtained time-resolved reaction information and reliable activity data will then guide the rational design of new catalysts. Strategies such as optimizing the restructuring process as well as overcoming the adsorption-energy scaling relations will be discussed. Finally, pending current challenges and prospects toward the understanding and development of efficient heterogeneous catalysts and selected homogeneous catalysts are presented.
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Affiliation(s)
- Yonggui Zhao
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | | | - Chong Huang
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Carlos A Triana
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Walker R Marks
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Hang Chen
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Han Zhao
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Greta R Patzke
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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8
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Kang W, Wei R, Yin H, Li D, Chen Z, Huang Q, Zhang P, Jing H, Wang X, Li C. Unraveling Sequential Oxidation Kinetics and Determining Roles of Multi-Cobalt Active Sites on Co 3O 4 Catalyst for Water Oxidation. J Am Chem Soc 2023; 145:3470-3477. [PMID: 36724407 DOI: 10.1021/jacs.2c11508] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The multi-redox mechanism involving multi-sites has great implications to dictate the catalytic water oxidation. Understanding the sequential dynamics of multi-steps in oxygen evolution reaction (OER) cycles on working catalysts is a highly important but challenging issue. Here, using quasi-operando transient absorption (TA) spectroscopy and a typical photosensitization strategy, we succeeded in resolving the sequential oxidation kinetics involving multi-active sites for water oxidation in OER catalytic cycle, with Co3O4 nanoparticles as model catalysts. When OER initiates from fast oxidation of surface Co2+ ions, both surface Co2+ and Co3+ ions are active sites of the multi-cobalt centers for water oxidation. In the sequential kinetics (Co2+ → Co3+ → Co4+), the key characteristic is fast oxidation and slow consumption for all the cobalt species. Due to this characteristic, the Co4+ intermediate distribution plays a determining role in OER activity and results in the slow overall OER kinetics. These insights shed light on the kinetic understanding of water oxidation on heterogeneous catalysts with multi-sites.
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Affiliation(s)
- Wanchao Kang
- Key Laboratory of Advanced Catalysis, Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China.,State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China
| | - Ruifang Wei
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China
| | - Heng Yin
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China
| | - Dongfeng Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zheng Chen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China
| | - Qinge Huang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China
| | - Pengfei Zhang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China
| | - Huanwang Jing
- Key Laboratory of Advanced Catalysis, Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Xiuli Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China
| | - Can Li
- Key Laboratory of Advanced Catalysis, Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China.,State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China.,University of Chinese Academy of Sciences, Beijing 100049, China
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9
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Yang S, Li X, Li Y, Wang Y, Jin X, Qin L, Zhang W, Cao R. Effect of Proton Transfer on Electrocatalytic Water Oxidation by Manganese Phosphates. Angew Chem Int Ed Engl 2023; 62:e202215594. [PMID: 36342503 DOI: 10.1002/anie.202215594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Indexed: 11/09/2022]
Abstract
The effect of proton transfer on water oxidation has hardly been measurably established in heterogeneous electrocatalysts. Herein, two isomorphous manganese phosphates (NH4 MnPO4 ⋅ H2 O and KMnPO4 ⋅ H2 O) were designed to form an ideal platform to study the effect of proton transfer on water oxidation. The hydrogen-bonding network in NH4 MnPO4 ⋅ H2 O has been proven to be solely responsible for its better activity. The differences of the proton transfer kinetics in the two materials indicate a fast proton hopping transfer process with a low activation energy in NH4 MnPO4 ⋅ H2 O. In addition, the hydrogen-bonding network can effectively promote the proton transfer between adjacent Mn sites and further stabilize the MnIII -OH intermediates. The faster proton transfer results in a higher proportion of zeroth-order in [H+ ] for OER. Thus, proton transfer-affected electrocatalytic water oxidation has been measurably observed to bring detailed insights into the mechanism of water oxidation.
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Affiliation(s)
- Shujiao Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710119, Xi'an, China
| | - Xialiang Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710119, Xi'an, China
| | - Yifan Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710119, Xi'an, China
| | - Yabo Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710119, Xi'an, China
| | - Xiaotong Jin
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710119, Xi'an, China
| | - Lingshuang Qin
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710119, Xi'an, China
| | - Wei Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710119, Xi'an, China
| | - Rui Cao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710119, Xi'an, China
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10
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Khosravi M, Mohammadi MR. Trends and progress in application of cobalt-based materials in catalytic, electrocatalytic, photocatalytic, and photoelectrocatalytic water splitting. PHOTOSYNTHESIS RESEARCH 2022; 154:329-352. [PMID: 36195743 DOI: 10.1007/s11120-022-00965-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
There has been a growing interest in water oxidation in recent two decades. Along with that, remarkable discovery of formation of a mysterious catalyst layer upon application of an anodic potential of 1.13 V vs. standard hydrogen electrode (SHE) to an inert indium tin oxide electrode immersed in phosphate buffer containing Co(II) ions by Nocera et.al, has greatly attracted researchers interest. These researches have oriented in two directions; one focuses on obtaining better understanding of the reported mysterious catalyst layer, further modification, and improved performance, and the second approach is about designing coordination complexes of cobalt and investigating their properties toward the application in water splitting. Although there have been critical debates on true catalysts that are responsible for water oxidation in homogeneous systems of coordination complexes of cobalt, and the case is not totally closed, in this short review, our focus will be mainly on recent major progress and developments in the design and the application of cobalt oxide-based materials in catalytic, electrocatalytic, photocatalytic, and photoelectrocatalytic water oxidation reaction, which have been reported since pioneering report of Nocera in 2008 (Kanan Matthew and Nocera Daniel in Science 321:1072-1075, 2008).
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Affiliation(s)
- Mehdi Khosravi
- Department of Physics, University of Sistan and Baluchestan, Zahedan, 98167-45845, Iran
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11
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Yang L, Cheng C, Zhang X, Tang C, Du K, Yang Y, Shen SC, Xu SL, Yin PF, Liang HW, Ling T. Dual-site collaboration boosts electrochemical nitrogen reduction on Ru-S-C single-atom catalyst. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(22)64136-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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12
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Hausmann JN, Mebs S, Dau H, Driess M, Menezes PW. Oxygen Evolution Activity of Amorphous Cobalt Oxyhydroxides: Interconnecting Precatalyst Reconstruction, Long-Range Order, Buffer-Binding, Morphology, Mass Transport, and Operation Temperature. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2207494. [PMID: 36189873 DOI: 10.1002/adma.202207494] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/15/2022] [Indexed: 06/16/2023]
Abstract
Nanocrystalline or amorphous cobalt oxyhydroxides (CoCat) are promising electrocatalysts for the oxygen evolution reaction (OER). While having the same short-range order, CoCat phases possess different electrocatalytic properties. This phenomenon is not conclusively understood, as multiple interdependent parameters affect the OER activity simultaneously. Herein, a layered cobalt borophosphate precatalyst, Co(H2 O)2 [B2 P2 O8 (OH)2 ]·H2 O, is fully reconstructed into two different CoCat phases. In contrast to previous reports, this reconstruction is not initiated at the surface but at the electrode substrate to catalyst interface. Ex situ and in situ investigations of the two borophosphate derived CoCats, as well as the prominent CoPi and CoBi identify differences in the Tafel slope/range, buffer binding and content, long-range order, number of accessible edge sites, redox activity, and morphology. Considering and interconnecting these aspects together with proton mass-transport limitations, a comprehensive picture is provided explaining the different OER activities. The most decisive factors are the buffers used for reconstruction, the number of edge sites that are not inhibited by irreversibly bonded buffers, and the morphology. With this acquired knowledge, an optimized OER system is realized operating in near-neutral potassium borate medium at 1.62 ± 0.03 VRHE yielding 250 mA cm-2 at 65 °C for 1 month without degrading performance.
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Affiliation(s)
- J Niklas Hausmann
- Department of Chemistry: Metalorganics and Inorganic Materials, Technical University of Berlin, Straße des 17 Juni 135, Sekr. C2, 10623, Berlin, Germany
| | - Stefan Mebs
- Department of Physics, Free University of Berlin, Arnimallee 14, 14195, Berlin, Germany
| | - Holger Dau
- Department of Physics, Free University of Berlin, Arnimallee 14, 14195, Berlin, Germany
| | - Matthias Driess
- Department of Chemistry: Metalorganics and Inorganic Materials, Technical University of Berlin, Straße des 17 Juni 135, Sekr. C2, 10623, Berlin, Germany
| | - Prashanth W Menezes
- Department of Chemistry: Metalorganics and Inorganic Materials, Technical University of Berlin, Straße des 17 Juni 135, Sekr. C2, 10623, Berlin, Germany
- Material Chemistry Group for Thin Film Catalysis-CatLab, Helmholtz-Center Berlin for Materials and Energy, Albert-Einstein-Str. 15, 12489, Berlin, Germany
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13
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Peng O, Hu Q, Zhou X, Zhang R, Du Y, Li M, Ma L, Xi S, Fu W, Xu ZX, Cheng C, Chen Z, Loh KP. Swinging Hydrogen Evolution to Nitrate Reduction Activity in Molybdenum Carbide by Ruthenium Doping. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ouwen Peng
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518000, China
| | - Qikun Hu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Xin Zhou
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Rongrong Zhang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
- Joint School of NUS and TJU, International Campus of Tianjin University, Fuzhou 350207, China
| | - Yonghua Du
- National Synchrotron Light Source II, Brookhaven National Lab, Upton, New York 11973, United States
| | - Minzhang Li
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, China
| | - Lu Ma
- National Synchrotron Light Source II, Brookhaven National Lab, Upton, New York 11973, United States
| | - Shibo Xi
- Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore 627833, Singapore
| | - Wei Fu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Zong-Xiang Xu
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, China
| | - Chun Cheng
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518000, China
| | - Zhongxin Chen
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Kian Ping Loh
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
- Joint School of NUS and TJU, International Campus of Tianjin University, Fuzhou 350207, China
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14
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Structural Fine‐Tuning and In‐situ Generation of P, O Vacancies in Hollow Co‐Ferrocene‐MOFs Derived Phosphides for Efficient Water Oxidation. ChemCatChem 2022. [DOI: 10.1002/cctc.202200558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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Frei H. Time-Resolved Vibrational and Electronic Spectroscopy for Understanding How Charges Drive Metal Oxide Catalysts for Water Oxidation. J Phys Chem Lett 2022; 13:7953-7964. [PMID: 35981106 DOI: 10.1021/acs.jpclett.2c01320] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Temporally resolved spectroscopy is a powerful approach for gaining detailed mechanistic understanding of water oxidation at robust Earth-abundant metal oxide catalysts for guiding efficiency improvement of solar fuel conversion systems. Beyond detecting and structurally identifying surface intermediates by vibrational and accompanying optical spectroscopy, knowledge of how charges, sequentially delivered to the metal oxide surface, drive the four-electron water oxidation cycle is critical for enhancing catalytic efficiency. Key issues addressed in this Perspective are the experimental requirements for establishing the kinetic relevancy of observed surface species and the discovery of the rate-boosting role of encounters of two or more one-electron surface hole charges, often in the form of randomly hopping metal oxo or oxyl moieties, for accessing very low-barrier O-O bond-forming pathways. Recent spectroscopic breakthroughs of metal oxide photo- and electrocatalysts inspire future research poised to take advantage of new highly sensitive spectroscopic tools and of methods for fast catalysis triggering.
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Affiliation(s)
- Heinz Frei
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720, United States
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16
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Yang H, Li F, Zhan S, Liu Y, Li W, Meng Q, Kravchenko A, Liu T, Yang Y, Fang Y, Wang L, Guan J, Furó I, Ahlquist MSG, Sun L. Intramolecular hydroxyl nucleophilic attack pathway by a polymeric water oxidation catalyst with single cobalt sites. Nat Catal 2022. [DOI: 10.1038/s41929-022-00783-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
AbstractExploration of efficient water oxidation catalysts (WOCs) is the primary challenge in conversion of renewable energy into fuels. Here we report a molecularly well-defined heterogeneous WOC with Aza-fused, π-conjugated, microporous polymer (Aza-CMP) coordinated single cobalt sites (Aza-CMP-Co). The single cobalt sites in Aza-CMP-Co exhibited superior activity under alkaline and near-neutral conditions. Moreover, the molecular nature of the isolated catalytic sites makes Aza-CMP-Co a reliable model for studying the heterogeneous water oxidation mechanism. By a combination of experimental and theoretical results, a pH-dependent nucleophilic attack pathway for O-O bond formation was proposed. Under alkaline conditions, the intramolecular hydroxyl nucleophilic attack (IHNA) process with which the adjacent -OH group nucleophilically attacks Co4+=O was identified as the rate-determining step. This process leads to lower activation energy and accelerated kinetics than those of the intermolecular water nucleophilic attack (WNA) pathway. This study provides significant insights into the crucial function of electrolyte pH in water oxidation catalysis and enhancement of water oxidation activity by regulation of the IHNA pathway.
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17
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Fu HQ, Zhou M, Liu PF, Liu P, Yin H, Sun KZ, Yang HG, Al-Mamun M, Hu P, Wang HF, Zhao H. Hydrogen Spillover-Bridged Volmer/Tafel Processes Enabling Ampere-Level Current Density Alkaline Hydrogen Evolution Reaction under Low Overpotential. J Am Chem Soc 2022; 144:6028-6039. [PMID: 35302356 DOI: 10.1021/jacs.2c01094] [Citation(s) in RCA: 72] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Water-alkaline electrolysis holds a great promise for industry-scale hydrogen production but is hindered by the lack of enabling hydrogen evolution reaction electrocatalysts to operate at ampere-level current densities under low overpotentials. Here, we report the use of hydrogen spillover-bridged water dissociation/hydrogen formation processes occurring at the synergistically hybridized Ni3S2/Cr2S3 sites to incapacitate the inhibition effect of high-current-density-induced high hydrogen coverage at the water dissociation site and concurrently promote Volmer/Tafel processes. The mechanistic insights critically important to enable ampere-level current density operation are depicted from the experimental and theoretical studies. The Volmer process is drastically boosted by the strong H2O adsorption at Cr5c sites of Cr2S3, the efficient H2O* dissociation via a heterolytic cleavage process (Cr5c-H2O* + S3c(#) → Cr5c-OH* + S3c-H#) on the Cr5c/S3c sites in Cr2S3, and the rapid desorption of OH* from Cr5c sites of Cr2S3 via a new water-assisted desorption mechanism (Cr5c-OH* + H2O(aq) → Cr5c-H2O* + OH-(aq)), while the efficient Tafel process is achieved through hydrogen spillover to rapidly transfer H# from the synergistically located H-rich site (Cr2S3) to the H-deficient site (Ni3S2) with excellent hydrogen formation activity. As a result, the hybridized Ni3S2/Cr2S3 electrocatalyst can readily achieve a current density of 3.5 A cm-2 under an overpotential of 251 ± 3 mV in 1.0 M KOH electrolyte. The concept exemplified in this work provides a useful means to address the shortfalls of ampere-level current-density-tolerant Hydrogen evolution reaction (HER) electrocatalysts.
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Affiliation(s)
- Huai Qin Fu
- Centre for Catalysis and Clean Energy, Gold Coast Campus, Griffith University, Gold Coast, QLD 4222, Australia
| | - Min Zhou
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Peng Fei Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Porun Liu
- Centre for Catalysis and Clean Energy, Gold Coast Campus, Griffith University, Gold Coast, QLD 4222, Australia
| | - Huajie Yin
- Centre for Catalysis and Clean Energy, Gold Coast Campus, Griffith University, Gold Coast, QLD 4222, Australia
| | - Kai Zhi Sun
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Hua Gui Yang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Mohammad Al-Mamun
- Centre for Catalysis and Clean Energy, Gold Coast Campus, Griffith University, Gold Coast, QLD 4222, Australia
| | - Peijun Hu
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.,School of Chemistry and Chemical Engineering, The Queen's University of Belfast, Belfast BT9 5AG, U.K
| | - Hai-Feng Wang
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Huijun Zhao
- Centre for Catalysis and Clean Energy, Gold Coast Campus, Griffith University, Gold Coast, QLD 4222, Australia
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18
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Li W, Li F, Zhao Y, Liu C, Li Y, Yang H, Fan K, Zhang P, Shan Y, Sun L. Promotion of the oxygen evolution performance of Ni-Fe layered hydroxides via the introduction of a proton-transfer mediator anion. Sci China Chem 2021. [DOI: 10.1007/s11426-021-1178-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Deng X, Xu G, Zhang Y, Wang L, Zhang J, Li J, Fu X, Luo J. Understanding the Roles of Electrogenerated Co
3+
and Co
4+
in Selectivity‐Tuned 5‐Hydroxymethylfurfural Oxidation. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108955] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xiaohui Deng
- Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and Engineering Shenzhen University Shenzhen China
| | - Ge‐Yang Xu
- College of Materials State Key Laboratory of Physical Chemistry of Solid Surfaces iChEM College of Chemistry and Chemical Engineering Fujian Key Laboratory of Advanced Materials College of Energy Xiamen University Xiamen China
| | - Yue‐Jiao Zhang
- College of Materials State Key Laboratory of Physical Chemistry of Solid Surfaces iChEM College of Chemistry and Chemical Engineering Fujian Key Laboratory of Advanced Materials College of Energy Xiamen University Xiamen China
| | - Lei Wang
- Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and Engineering Shenzhen University Shenzhen China
| | - Jiujun Zhang
- Institute for Sustainable Energy/College of Sciences Shanghai University Shanghai China
| | - Jian‐Feng Li
- College of Materials State Key Laboratory of Physical Chemistry of Solid Surfaces iChEM College of Chemistry and Chemical Engineering Fujian Key Laboratory of Advanced Materials College of Energy Xiamen University Xiamen China
| | - Xian‐Zhu Fu
- Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and Engineering Shenzhen University Shenzhen China
| | - Jing‐Li Luo
- Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and Engineering Shenzhen University Shenzhen China
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20
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Deng X, Xu GY, Zhang YJ, Wang L, Zhang J, Li JF, Fu XZ, Luo JL. Understanding the Roles of Electrogenerated Co 3+ and Co 4+ in Selectivity-Tuned 5-Hydroxymethylfurfural Oxidation. Angew Chem Int Ed Engl 2021; 60:20535-20542. [PMID: 34288301 DOI: 10.1002/anie.202108955] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Indexed: 11/06/2022]
Abstract
The Co-based electrocatalyst is among the most promising candidates for electrochemical oxidation of 5-hydroxymethylfurfural (HMF). However, the intrinsic active sites and detailed mechanism of this catalyst remains unclear. We combine experimental evidence and a theoretical study to show that electrogenerated Co3+ and Co4+ species act as chemical oxidants but with distinct roles in selective HMF oxidation. It is found that Co3+ is only capable of oxidizing formyl group to produce carboxylate while Co4+ is required for the initial oxidation of hydroxyl group with significantly faster kinetics. As a result, the product distribution shows explicit dependence on the Co oxidation states and selective production of 5-hydroxymethyl-2-furancarboxylic acid (HMFCA) and 2,5-furandicarboxylic acid (FDCA) are achieved by tuning the applied potential. This work offers essential mechanistic insight on Co-catalyzed organic oxidation reactions and might guide the design of more efficient electrocatalysts.
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Affiliation(s)
- Xiaohui Deng
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, China
| | - Ge-Yang Xu
- College of Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, College of Chemistry and Chemical Engineering, Fujian Key Laboratory of Advanced Materials, College of Energy, Xiamen University, Xiamen, China
| | - Yue-Jiao Zhang
- College of Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, College of Chemistry and Chemical Engineering, Fujian Key Laboratory of Advanced Materials, College of Energy, Xiamen University, Xiamen, China
| | - Lei Wang
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, China
| | - Jiujun Zhang
- Institute for Sustainable Energy/College of Sciences, Shanghai University, Shanghai, China
| | - Jian-Feng Li
- College of Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, College of Chemistry and Chemical Engineering, Fujian Key Laboratory of Advanced Materials, College of Energy, Xiamen University, Xiamen, China
| | - Xian-Zhu Fu
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, China
| | - Jing-Li Luo
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, China
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21
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Lang C, Li J, Yang KR, Wang Y, He D, Thorne JE, Croslow S, Dong Q, Zhao Y, Prostko G, Brudvig GW, Batista VS, Waegele MM, Wang D. Observation of a potential-dependent switch of water-oxidation mechanism on Co-oxide-based catalysts. Chem 2021. [DOI: 10.1016/j.chempr.2021.03.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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22
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Operando tracking of oxidation-state changes by coupling electrochemistry with time-resolved X-ray absorption spectroscopy demonstrated for water oxidation by a cobalt-based catalyst film. Anal Bioanal Chem 2021; 413:5395-5408. [PMID: 34274992 PMCID: PMC8405515 DOI: 10.1007/s00216-021-03515-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 06/09/2021] [Accepted: 06/29/2021] [Indexed: 12/05/2022]
Abstract
Transition metal oxides are promising electrocatalysts for water oxidation, i.e., the oxygen evolution reaction (OER), which is critical in electrochemical production of non-fossil fuels. The involvement of oxidation state changes of the metal in OER electrocatalysis is increasingly recognized in the literature. Tracing these oxidation states under operation conditions could provide relevant information for performance optimization and development of durable catalysts, but further methodical developments are needed. Here, we propose a strategy to use single-energy X-ray absorption spectroscopy for monitoring metal oxidation-state changes during OER operation with millisecond time resolution. The procedure to obtain time-resolved oxidation state values, using two calibration curves, is explained in detail. We demonstrate the significance of this approach as well as possible sources of data misinterpretation. We conclude that the combination of X-ray absorption spectroscopy with electrochemical techniques allows us to investigate the kinetics of redox transitions and to distinguish the catalytic current from the redox current. Tracking of the oxidation state changes of Co ions in electrodeposited oxide films during cyclic voltammetry in neutral pH electrolyte serves as a proof of principle.
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23
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Ezhov R, Ravari AK, Bury G, Smith PF, Pushkar Y. Do multinuclear 3d metal catalysts achieve O-O bond formation via radical coupling or via water nucleophilic attack? WNA leads the way in [Co 4O 4] n. CHEM CATALYSIS 2021; 1:407-422. [PMID: 37378353 PMCID: PMC10296785 DOI: 10.1016/j.checat.2021.03.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
Catalytic water oxidation is a required process for clean energy production based on the concept of artificial photosynthesis. Here, we provide in situ spectroscopic and computational analysis for the closest known photosystem II analog, [Co4O4]n+ ([Co4O4Py4Ac4]0, Py = pyridine and Ac = CH3COO-), which catalyzes electrochemical water oxidation. In situ extended X-ray absorption fine structure detects an ultrashort, CoIV=O (~1.67 Å) moiety, a crucial intermediate for O-O bond formation. Density function theory analyses show that the intermediate has two CoIV centers and a CoIV=O unit of strong radicaloid character sufficient to support a CoIV=O + H2O = Co-OOH + H+ transition, where the carboxyl ligand accepts the proton and the bridging oxygen stabilizes the peroxide via hydrogen bonding. The proposed water nucleophilic attack mechanism accounts for all prior spectroscopic evidence on the Co4O44+ core. Our results are important for the design and development of efficient water oxidation catalysts, which contribute to the ultimate goal of clean energy from artificial photosynthesis.
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Affiliation(s)
- Roman Ezhov
- Department of Physics and Astronomy, Purdue University, West Lafayette, IN 47907, USA
| | | | - Gabriel Bury
- Department of Physics and Astronomy, Purdue University, West Lafayette, IN 47907, USA
| | - Paul F. Smith
- Department of Chemistry, Valparaiso University, Valparaiso, IN 46383, USA
| | - Yulia Pushkar
- Department of Physics and Astronomy, Purdue University, West Lafayette, IN 47907, USA
- Lead contact
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24
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Huang J, Sheng H, Ross RD, Han J, Wang X, Song B, Jin S. Modifying redox properties and local bonding of Co 3O 4 by CeO 2 enhances oxygen evolution catalysis in acid. Nat Commun 2021; 12:3036. [PMID: 34031417 PMCID: PMC8144612 DOI: 10.1038/s41467-021-23390-8] [Citation(s) in RCA: 119] [Impact Index Per Article: 39.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Accepted: 04/27/2021] [Indexed: 11/09/2022] Open
Abstract
Developing efficient and stable earth-abundant electrocatalysts for acidic oxygen evolution reaction is the bottleneck for water splitting using proton exchange membrane electrolyzers. Here, we show that nanocrystalline CeO2 in a Co3O4/CeO2 nanocomposite can modify the redox properties of Co3O4 and enhances its intrinsic oxygen evolution reaction activity, and combine electrochemical and structural characterizations including kinetic isotope effect, pH- and temperature-dependence, in situ Raman and ex situ X-ray absorption spectroscopy analyses to understand the origin. The local bonding environment of Co3O4 can be modified after the introduction of nanocrystalline CeO2, which allows the CoIII species to be easily oxidized into catalytically active CoIV species, bypassing the potential-determining surface reconstruction process. Co3O4/CeO2 displays a comparable stability to Co3O4 thus breaks the activity/stability tradeoff. This work not only establishes an efficient earth-abundant catalysts for acidic oxygen evolution reaction, but also provides strategies for designing more active catalysts for other reactions. Developing efficient and stable earth-abundant electrocatalysts for acidic oxygen evolution reaction is challenging. Here, the authors modify the local bonding environment of Co3O4 by CeO2 nanocrystallites to regulate the redox properties, thus enhance the catalytic activity.
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Affiliation(s)
- Jinzhen Huang
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, USA.,Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin, China
| | - Hongyuan Sheng
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, USA
| | - R Dominic Ross
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, USA
| | - Jiecai Han
- Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin, China
| | - Xianjie Wang
- School of Physics, Harbin Institute of Technology, Harbin, China
| | - Bo Song
- Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin, China.
| | - Song Jin
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, USA.
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25
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Uspenskaya EV, Pleteneva TV, Kazimova IV, Syroeshkin AV. Evaluation of Poorly Soluble Drugs' Dissolution Rate by Laser Scattering in Different Water Isotopologues. Molecules 2021; 26:601. [PMID: 33498881 PMCID: PMC7866158 DOI: 10.3390/molecules26030601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 12/29/2020] [Accepted: 01/19/2021] [Indexed: 11/24/2022] Open
Abstract
The most important task in the design of dosage forms is to modify the pharmaceutical substances structure in order to increase solubilization, targeted delivery, controlled rate of drug administration, and its bioavailability. Screening-laboratory (in vitro) or computer (in silico)-as a procedure for selecting a prototype for the design of a drug molecule, involves several years of research and significant costs. Among a large number of solvents and diluents (alcohol, ether, oils, glycerol, Vaseline) used in the pharmaceutical industry for the manufacture of drugs water finds the greatest application. This is because all biological reactions (reactions in living systems) take place in water and distribution of the fluid in the body and the substances found within is critical for the maintenance of intracellular and extracellular functions. Modern studies in the field of the stable isotopic compositions of natural water and its structure and properties make it possible to use isotopic transformations of the water to improve the pharmacokinetic properties of medicinal substances without previous structural modification. It is known that by replacing any of the atoms in the reacting substance molecule with its isotope, it is possible to record changes in the reactivity, which are expressed as a change in the reaction rate constant, i.e., in the manifestation of the kinetic isotope effect (KIE). The article presents the results of studies on the effect of the kinetic isotope effect of a solvent-water-on increasing the solubility and dissolution rate constants of poorly soluble drugs using laser diffraction spectroscopy. The results of the studies can be successfully implemented in pharmaceutical practice to overcome the poor solubility of medicinal substances of classes II and IV, according to the biopharmaceutical classification system (BCS), in water for pharmaceutical purposes by performing its preliminary and safe isotopic modification.
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Affiliation(s)
- Elena V. Uspenskaya
- Department of Pharmaceutical and Toxicological Chemistry, Medical Institute, RUDN University, 6 Miklukho-Maklaya Street, 117198 Moscow, Russia; (T.V.P.); (I.V.K.); (A.V.S.)
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26
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Li J, Wan W, Triana CA, Chen H, Zhao Y, Mavrokefalos CK, Patzke GR. Reaction kinetics and interplay of two different surface states on hematite photoanodes for water oxidation. Nat Commun 2021; 12:255. [PMID: 33431853 PMCID: PMC7801602 DOI: 10.1038/s41467-020-20510-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 11/30/2020] [Indexed: 11/09/2022] Open
Abstract
Understanding the function of surface states on photoanodes is crucial for unraveling the underlying reaction mechanisms of water oxidation. For hematite photoanodes, only one type of surface states with higher oxidative energy (S1) has been proposed and verified as reaction intermediate, while the other surface state located at lower potentials (S2) was assigned to inactive or recombination sites. Through employing rate law analyses and systematical (photo)electrochemical characterizations, here we show that S2 is an active reaction intermediate for water oxidation as well. Furthermore, we demonstrate that the reaction kinetics and dynamic interactions of both S1 and S2 depend significantly on operational parameters, such as illumination intensity, nature of the electrolyte, and applied potential. These insights into the individual reaction kinetics and the interplay of both surface states are decisive for designing efficient photoanodes.
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Affiliation(s)
- Jingguo Li
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland
| | - Wenchao Wan
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland
| | - Carlos A Triana
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland
| | - Hang Chen
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland
| | - Yonggui Zhao
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland
| | - Christos K Mavrokefalos
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland
| | - Greta R Patzke
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland.
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27
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Nakamura S, Capone M, Mattioli G, Guidoni L. Early-stage formation of (hydr)oxo bridges in transition-metal catalysts for photosynthetic processes. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02227f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Ab initio simulations have been used to assess reaction pathways for the formation of M–(hydr)oxo–M (M = Co, Mn, Ni) bridges from M(ii) aqueous solutions, as early-stage building blocks of transition-metal catalysts for oxygen evolution.
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Affiliation(s)
- Shin Nakamura
- Department of Biochemical Sciences “A. Rossi Fanelli”
- Sapienza University of Rome
- Rome
- Italy
| | - Matteo Capone
- Department of physical and chemical science
- Università dell'Aquila
- L'Aquila
- Italy
| | - Giuseppe Mattioli
- Istituto di Struttura della Materia del CNR (ISM-CNR)
- I-00015 Monterotondo Scalo
- Italy
| | - Leonardo Guidoni
- Department of physical and chemical science
- Università dell'Aquila
- L'Aquila
- Italy
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28
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Li J, Triana CA, Wan W, Adiyeri Saseendran DP, Zhao Y, Balaghi SE, Heidari S, Patzke GR. Molecular and heterogeneous water oxidation catalysts: recent progress and joint perspectives. Chem Soc Rev 2021; 50:2444-2485. [DOI: 10.1039/d0cs00978d] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The recent synthetic and mechanistic progress in molecular and heterogeneous water oxidation catalysts highlights the new, overarching strategies for knowledge transfer and unifying design concepts.
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Affiliation(s)
- J. Li
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - C. A. Triana
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - W. Wan
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | | | - Y. Zhao
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - S. E. Balaghi
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - S. Heidari
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - G. R. Patzke
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
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29
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Mondal B, Chattopadhyay S, Dey S, Mahammed A, Mittra K, Rana A, Gross Z, Dey A. Elucidation of Factors That Govern the 2e -/2H + vs 4e -/4H + Selectivity of Water Oxidation by a Cobalt Corrole. J Am Chem Soc 2020; 142:21040-21049. [PMID: 33259190 DOI: 10.1021/jacs.0c08654] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Considering the importance of water splitting as the best solution for clean and renewable energy, the worldwide efforts for development of increasingly active molecular water oxidation catalysts must be accompanied by studies that focus on elucidating the mode of actions and catalytic pathways. One crucial challenge remains the elucidation of the factors that determine the selectivity of water oxidation by the desired 4e-/4H+ pathway that leads to O2 rather than by 2e-/2H+ to H2O2. We now show that water oxidation with the cobalt-corrole CoBr8 as electrocatalyst affords H2O2 as the main product in homogeneous solutions, while heterogeneous water oxidation by the same catalyst leads exclusively to oxygen. Experimental and computation-based investigations of the species formed during the process uncover the formation of a Co(III)-superoxide intermediate and its preceding high-valent Co-oxyl complex. The competition between the base-catalyzed hydrolysis of Co(III)-hydroperoxide [Co(III)-OOH]- to release H2O2 and the electrochemical oxidation of the same to release O2 via [Co(III)-O2•]- is identified as the key step determining the selectivity of water oxidation.
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Affiliation(s)
- Biswajit Mondal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Samir Chattopadhyay
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Subal Dey
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Atif Mahammed
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 3200008, Israel
| | - Kaustuv Mittra
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Atanu Rana
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Zeev Gross
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 3200008, Israel
| | - Abhishek Dey
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
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30
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Bai L, Lee S, Hu X. Spectroscopic and Electrokinetic Evidence for a Bifunctional Mechanism of the Oxygen Evolution Reaction**. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011388] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Lichen Bai
- Laboratory of Inorganic Synthesis and Catalysis Institute of Chemical Sciences and Engineering ISIC-LSCI École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Seunghwa Lee
- Laboratory of Inorganic Synthesis and Catalysis Institute of Chemical Sciences and Engineering ISIC-LSCI École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Xile Hu
- Laboratory of Inorganic Synthesis and Catalysis Institute of Chemical Sciences and Engineering ISIC-LSCI École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
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31
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Bai L, Lee S, Hu X. Spectroscopic and Electrokinetic Evidence for a Bifunctional Mechanism of the Oxygen Evolution Reaction*. Angew Chem Int Ed Engl 2020; 60:3095-3103. [PMID: 33089600 DOI: 10.1002/anie.202011388] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 10/06/2020] [Indexed: 12/18/2022]
Abstract
A bifunctional oxygen evolution reaction (OER) mechanism, in which the energetically demanding step of the attack of hydroxide on a metal oxo unit is facilitated by a hydrogen atom transfer to a second site, has the potential to circumvent the scaling relationship. However, the bifunctional mechanism has hitherto only been supported by theoretical computations. Here we describe an operando Raman spectroscopic and electrokinetic study of two highly active OER catalysts, FeOOH-NiOOH and NiFe layered double hydroxide (LDH). The data support two distinct mechanisms for the two catalysts: FeOOH-NiOOH operates by a bifunctional mechanism where the rate-determining O-O bond forming step is the OH- attack on a Fe=O coupled with a hydrogen atom transfer to a NiIII -O site, whereas NiFe LDH operates by a conventional mechanism of four consecutive proton-coupled electron transfer steps. The experimental validation of the bifunctional mechanism enhances the understanding of OER catalysts.
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Affiliation(s)
- Lichen Bai
- Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, ISIC-LSCI, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Seunghwa Lee
- Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, ISIC-LSCI, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Xile Hu
- Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, ISIC-LSCI, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
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32
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Key activity descriptors of nickel-iron oxygen evolution electrocatalysts in the presence of alkali metal cations. Nat Commun 2020; 11:6181. [PMID: 33268768 PMCID: PMC7710789 DOI: 10.1038/s41467-020-19729-2] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 10/26/2020] [Indexed: 11/08/2022] Open
Abstract
Efficient oxygen evolution reaction (OER) electrocatalysts are pivotal for sustainable fuel production, where the Ni-Fe oxyhydroxide (OOH) is among the most active catalysts for alkaline OER. Electrolyte alkali metal cations have been shown to modify the activity and reaction intermediates, however, the exact mechanism is at question due to unexplained deviations from the cation size trend. Our X-ray absorption spectroelectrochemical results show that bigger cations shift the Ni2+/(3+δ)+ redox peak and OER activity to lower potentials (however, with typical discrepancies), following the order CsOH > NaOH ≈ KOH > RbOH > LiOH. Here, we find that the OER activity follows the variations in electrolyte pH rather than a specific cation, which accounts for differences both in basicity of the alkali hydroxides and other contributing anomalies. Our density functional theory-derived reactivity descriptors confirm that cations impose negligible effect on the Lewis acidity of Ni, Fe, and O lattice sites, thus strengthening the conclusions of an indirect pH effect. It is commonly accepted that electrolyte alkali metal cations modify the catalytic activity for oxygen evolution reaction. Here the authors challenge this assumption, showing that the activity is actually affected by a change in the electrolyte pH rather than a specific alkali cation.
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33
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Tiede DM, Kwon G, He X, Mulfort KL, Martinson ABF. Characterizing electronic and atomic structures for amorphous and molecular metal oxide catalysts at functional interfaces by combining soft X-ray spectroscopy and high-energy X-ray scattering. NANOSCALE 2020; 12:13276-13296. [PMID: 32567636 DOI: 10.1039/d0nr02350g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Amorphous thin film materials and heterogenized molecular catalysts supported on electrode and other functional interfaces are widely investigated as promising catalyst formats for applications in solar and electrochemical fuels catalysis. However the amorphous character of these catalysts and the complexity of the interfacial architectures that merge charge transport properties of electrode and semiconductor supports with discrete sites for multi-step catalysis poses challenges for probing mechanisms that activate and tune sites for catalysis. This minireview discusses advances in soft X-ray spectroscopy and high-energy X-ray scattering that provide opportunities to resolve interfacial electronic and atomic structures, respectively, that are linked to catalysis. This review discusses how these techniques can be partnered with advances in nanostructured interface synthesis for combined soft X-ray spectroscopy and high-energy X-ray scattering analyses of thin film and heterogenized molecular catalysts. These combined approaches enable opportunities for the characterization of both electronic and atomic structures underlying fundamental catalytic function, and that can be applied under conditions relevant to device applications.
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Affiliation(s)
- David M Tiede
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois, USA.
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34
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Mohammadi MR, Loos S, Chernev P, Pasquini C, Zaharieva I, González-Flores D, Kubella P, Klingan K, Smith RDL, Dau H. Exploring the Limits of Self-Repair in Cobalt Oxide Films for Electrocatalytic Water Oxidation. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01944] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
| | - Stefan Loos
- Department for Experimental Physics, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany
| | - Petko Chernev
- Department for Experimental Physics, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany
| | - Chiara Pasquini
- Department for Experimental Physics, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany
| | - Ivelina Zaharieva
- Department for Experimental Physics, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany
| | - Diego González-Flores
- Department for Experimental Physics, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany
| | - Paul Kubella
- Department for Experimental Physics, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany
| | - Katharina Klingan
- Department for Experimental Physics, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany
| | - Rodney D. L. Smith
- Department of Chemistry, University of Waterloo, 200 University Ave. W, Waterloo, Ontario N2L 3G1,Canada
| | - Holger Dau
- Department for Experimental Physics, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany
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35
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Moysiadou A, Lee S, Hsu CS, Chen HM, Hu X. Mechanism of Oxygen Evolution Catalyzed by Cobalt Oxyhydroxide: Cobalt Superoxide Species as a Key Intermediate and Dioxygen Release as a Rate-Determining Step. J Am Chem Soc 2020; 142:11901-11914. [DOI: 10.1021/jacs.0c04867] [Citation(s) in RCA: 205] [Impact Index Per Article: 51.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Aliki Moysiadou
- Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), ISIC-LSCI, 1015 Lausanne, Switzerland
| | - Seunghwa Lee
- Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), ISIC-LSCI, 1015 Lausanne, Switzerland
| | - Chia-Shuo Hsu
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Hao Ming Chen
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Xile Hu
- Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), ISIC-LSCI, 1015 Lausanne, Switzerland
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36
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Pasquini C, D'Amario L, Zaharieva I, Dau H. Operando Raman spectroscopy tracks oxidation-state changes in an amorphous Co oxide material for electrocatalysis of the oxygen evolution reaction. J Chem Phys 2020; 152:194202. [PMID: 33687254 DOI: 10.1063/5.0006306] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Transition metal oxides are of high interest in both energy storage (batteries) and production of non-fossil fuels by (photo)electrocatalysis. Their functionally crucial charge (oxidation state) changes and electrocatalytic properties are best investigated under electrochemical operation conditions. We established operando Raman spectroscopy for investigation of the atomic structure and oxidation state of a non-crystalline, hydrated, and phosphate-containing Co oxide material (CoCat), which is an electrocatalyst for the oxygen evolution reaction (OER) at neutral pH and is structurally similar to LiCoO2 of batteries. Raman spectra were collected at various sub-catalytic and catalytic electric potentials. 2H labeling suggests Co oxidation coupled to Co-OH deprotonation at catalytic potentials. 18O labeling supports O-O bond formation starting from terminally coordinated oxygen species. Two broad bands around 877 cm-1 and 1077 cm-1 are assigned to CoCat-internal H2PO4 -. Raman peaks corresponding to terminal oxide (Co=O) or reactive oxygen species were not detectable; 1000-1200 cm-1 bands were instead assigned to two-phonon Raman scattering. At an increasingly positive potential, the intensity of the Raman bands decreased, which is unexpected and explained by self-absorption relating to CoCat electrochromism. A red-shift of the Co-O Raman bands with increasing potentials was described by four Gaussian bands of potential-dependent amplitudes. By linear combination of Raman band amplitudes, we can follow individually the Co(2+/3+) and Co(3+/4+) redox transitions, whereas previously published x-ray absorption spectroscopy analysis could determine only the averaged Co oxidation state. Our results show how electrochemical operando Raman spectroscopy can be employed as a potent analytical tool in mechanistic investigations on OER catalysis.
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Affiliation(s)
- Chiara Pasquini
- Department of Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Luca D'Amario
- Department of Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Ivelina Zaharieva
- Department of Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Holger Dau
- Department of Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
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37
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Chen BWJ, Mavrikakis M. How coverage influences thermodynamic and kinetic isotope effects for H2/D2 dissociative adsorption on transition metals. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02338k] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Hydrogen isotope effects are influenced by adsorbate coverage: at high coverages, isotope effects are lower than at low coverages. This helps to rationalize observed isotope effects, allowing more precise elucidation of reaction mechanisms.
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Affiliation(s)
- Benjamin W. J. Chen
- Department of Chemical and Biological Engineering
- University of Wisconsin – Madison
- Madison
- USA
| | - Manos Mavrikakis
- Department of Chemical and Biological Engineering
- University of Wisconsin – Madison
- Madison
- USA
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38
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Wahl S, El-Refaei SM, Amsalem P, Buzanich AG, Koch N, Pinna N. Operando diffuse reflectance UV-vis spectroelectrochemistry for investigating oxygen evolution electrocatalysts. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02329a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A diffuse reflectance UV-vis spectroelectrochemical study on Zn0.35Co0.65O and CoAl2O4 tracking the changes of solid oxygen evolution catalysts under working conditions to derive structure-activity correlations and insights in the active structures.
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Affiliation(s)
- Sebastian Wahl
- Institut für Chemie and IRIS Adlershof
- Humboldt-Universität zu Berlin
- 12489 Berlin
- Germany
| | - Sayed M. El-Refaei
- Institut für Chemie and IRIS Adlershof
- Humboldt-Universität zu Berlin
- 12489 Berlin
- Germany
| | - Patrick Amsalem
- Institut für Physik and IRIS Adlershof
- Humboldt-Universität zu Berlin
- 12489 Berlin
- Germany
| | | | - Norbert Koch
- Institut für Physik and IRIS Adlershof
- Humboldt-Universität zu Berlin
- 12489 Berlin
- Germany
| | - Nicola Pinna
- Institut für Chemie and IRIS Adlershof
- Humboldt-Universität zu Berlin
- 12489 Berlin
- Germany
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39
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Villalobos J, González-Flores D, Klingan K, Chernev P, Kubella P, Urcuyo R, Pasquini C, Mohammadi MR, Smith RDL, Montero ML, Dau H. Structural and functional role of anions in electrochemical water oxidation probed by arsenate incorporation into cobalt-oxide materials. Phys Chem Chem Phys 2019; 21:12485-12493. [DOI: 10.1039/c9cp01754b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Arsenate ions are incorporated in amorphous cobalt oxide catalysts at the periphery of the lattice or substituting cobalt ions.
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Affiliation(s)
- Javier Villalobos
- Centro de Electroquímica y Energía Química (CELEQ) and Escuela de Química
- Universidad de Costa Rica
- San José
- Costa Rica
| | - Diego González-Flores
- Centro de Electroquímica y Energía Química (CELEQ) and Escuela de Química
- Universidad de Costa Rica
- San José
- Costa Rica
- Department of Physics
| | | | - Petko Chernev
- Department of Physics
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Paul Kubella
- Department of Physics
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Roberto Urcuyo
- Centro de Electroquímica y Energía Química (CELEQ) and Escuela de Química
- Universidad de Costa Rica
- San José
- Costa Rica
| | - Chiara Pasquini
- Department of Physics
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | | | | | - Mavis L. Montero
- Centro de Investigación en Ciencia e Ingeniería de Materiales (CICIMA) and Escuela de Química
- Universidad de Costa Rica
- San José
- Costa Rica
| | - Holger Dau
- Department of Physics
- Freie Universität Berlin
- 14195 Berlin
- Germany
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