期刊
CATALYSIS SCIENCE & TECHNOLOGY
卷 9, 期 18, 页码 4821-4834出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9cy01028a
关键词
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资金
- National Natural Science Foundation of China [21606146, 51402299]
- Scientific Research Foundation of Shandong University of Science and Technology for Recruited Talents [2016RCJJ005]
- Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering [2018-K29]
Single-atom catalysis is a new frontier in the heterogeneous catalysis field due to its high activity and selectivity for various catalytic reactions. However, decades ago, single-atom catalysts could not be clearly visualized and characterized due to limitations associated with instrument resolution. In recent years, with the rapid development of characterization techniques, high-resolution scanning tunneling microscopy (STM), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), extended X-ray absorption fine structure (EXAFS), X-ray absorption near edge structure (XANES), diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), X-ray photoelectron spectroscopy (XPS), and other characterization techniques have been used to accurately represent single-atom catalysts. In this review, we discuss in depth these characterization techniques for Pt single-atom catalysts and focus on Fourier transformed EXAFS spectroscopy to study the coordination environment of Pt-M (M = Cl, O, C, N, S, Pt, Cu, Pd, Ni, Fe) for atomically dispersed Pt catalysts on diverse supports. We believe that this review will lead to better understanding of the effective characterization of Pt single-atom catalysts and promote further research on Pt single-atom catalysis in the future.
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