Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (9): 20220466.doi: 10.7503/cjcu20220466

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Synchrotron Radiation X-Ray Absorption Spectroscopy Research Progress on Platinum Single-atom Catalysts

REN Shijie1,2, QIAO Sicong1, LIU Chongjing1, ZHANG Wenhua2, SONG Li1()   

  1. 1.National Synchrotron Radiation Laboratory
    2.School of Chemistry and Materials Science,University of Science and Technology of China,Hefei 230029,China
  • Received:2022-07-11 Online:2022-09-10 Published:2022-08-09
  • Contact: SONG Li E-mail:song2012@ustc.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(U1932201);the Research Funds of the Double First-Class Initiative of University of Science and Technology of China(YD2310002004);the University Synergy Innovation Program of Anhui Province, China(GXXT-2020-002)

Abstract:

As comparison with bulk materials, platinum single-atom catalysts(Pt SACs) that possess almost 100% noble-metal utilization, superior catalytic activity and homogeneous reactive sites, generally emerge as a promising frontier. The interfacial interactions between highly dispersed Pt atoms and supports largely determine their chemical and physical properties. Hence, constructing the real correlation between metal-support interactions and catalytic performances is essential to guide the optimization design of Pt SACs. Thanks to high flux, high collimation and wide-range wavelengths from synchrotron radiation light source, X-ray absorption spectroscopy(XAS) exhibits unparalleled capacity in the identification of electronic structure and local coordination of SACs. In this prospection, we aim to briefly discuss the synchrotron-radiation XAS research progress on Pt SACs. The unique interaction between Pt and multiply supports, such as metal oxides, metals, nanocarbons and porous organic frameworks, is highlighted in order to give better understanding on the influence mechanism. Ultimately, high-resolution characterizations on Pt SACs based on new synchrotron radiation techniques are prospective and recommended.

Key words: Platinum single-atom catalyst, Synchrotron radiation X-ray absorption spectroscopy(XAS), Metal- support interaction

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