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Genz NS, Kallio A, Oord R, Krumeich F, Pokle A, Prytz Ø, Olsbye U, Meirer F, Huotari S, Weckhuysen BM. Operando Laboratory-Based Multi-Edge X-Ray Absorption Near-Edge Spectroscopy of Solid Catalysts. Angew Chem Int Ed Engl 2022; 61:e202209334. [PMID: 36205032 PMCID: PMC9828672 DOI: 10.1002/anie.202209334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Indexed: 11/19/2022]
Abstract
Laboratory-based X-ray absorption spectroscopy (XAS) and especially X-ray absorption near-edge structure (XANES) offers new opportunities in catalyst characterization and presents not only an alternative, but also a complementary approach to precious beamtime at synchrotron facilities. We successfully designed a laboratory-based setup for performing operando, quasi-simultaneous XANES analysis at multiple K-edges, more specifically, operando XANES of mono-, bi-, and trimetallic CO2 hydrogenation catalysts containing Ni, Fe, and Cu. Detailed operando XANES studies of the multielement solid catalysts revealed metal-dependent differences in the reducibility and re-oxidation behavior and their influence on the catalytic performance in CO2 hydrogenation. The applicability of operando laboratory-based XANES at multiple K-edges paves the way for advanced multielement catalyst characterization complementing detailed studies at synchrotron facilities.
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Affiliation(s)
- Nina S. Genz
- Inorganic Chemistry and Catalysis groupDepartment of ChemistryUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Antti‐Jussi Kallio
- Department of PhysicsUniversity of HelsinkiP. O. Box 6400014HelsinkiFinland
| | - Ramon Oord
- Inorganic Chemistry and Catalysis groupDepartment of ChemistryUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Frank Krumeich
- Laboratory of Inorganic ChemistryDepartment of ChemistryETH ZürichVladimir-Prelog-Weg 18093ZürichSwitzerland
| | - Anuj Pokle
- Department of PhysicsCenter for Materials Science and NanotechnologyUniversity of OsloP.O. Box 10480316OsloNorway
| | - Øystein Prytz
- Department of PhysicsCenter for Materials Science and NanotechnologyUniversity of OsloP.O. Box 10480316OsloNorway
| | - Unni Olsbye
- Department of ChemistryUniversity of OsloP.O. Box 10330315OsloNorway
| | - Florian Meirer
- Inorganic Chemistry and Catalysis groupDepartment of ChemistryUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Simo Huotari
- Department of PhysicsUniversity of HelsinkiP. O. Box 6400014HelsinkiFinland
| | - Bert M. Weckhuysen
- Inorganic Chemistry and Catalysis groupDepartment of ChemistryUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
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Li J, Xia W, Wang T, Zheng L, Lai Y, Pan J, Jiang C, Song L, Wang M, Zhang H, Chen N, Chen G, He J. A Facile Route for Constructing Effective Cu-N x Active Sites for Oxygen Reduction Reaction. Chemistry 2019; 26:4070-4079. [PMID: 31633249 DOI: 10.1002/chem.201903822] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 10/09/2019] [Indexed: 11/10/2022]
Abstract
The coordination number between copper and nitrogen in copper/nitrogen-based electrocatalysts is important for boosting the oxygen reduction reaction (ORR). However, it is difficult to control unsaturated copper/nitrogen constructions as well as to compare their ORR performances in similar carbon matrices in a simple yet efficient manner. In this study, we have easily attained two types of Cu+ -N2 and Cu2+ -N4 constructions simply by etching pyrolyzed Cu-doped zeolitic imidazolate framework nanoleaves (Cu-ZIF-L) with sulfuric acid or nitric acid, respectively. X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) spectra were recorded to further confirm the different copper/nitrogen constructions after the different acid treatments. Electrochemical studies have demonstrated that Cu+ -N2 sites are more active in boosting the ORR performance than Cu2+ -N4 sites. Furthermore, Cu-N/C-H2 SO4 , used as an air cathode in a zinc-air battery, exhibited excellent performance and stability.
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Affiliation(s)
- Jingjing Li
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Wei Xia
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Tao Wang
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Lirong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yue Lai
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Junjie Pan
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Cheng Jiang
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Li Song
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Mengyu Wang
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Huting Zhang
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Na Chen
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Guang Chen
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, P. R. China.,University of the Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jianping He
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
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