Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (9): 20220428.doi: 10.7503/cjcu20220428

• Review • Previous Articles     Next Articles

Freezing Synthesis for Single Atom Materials

WANG Ruyue1,2, WEI Hehe3, HUANG Kai1,2(), WU Hui2()   

  1. 1.School of Science,Beijing University of Posts and Telecommunications,Beijing 100876,China
    2.School of Materials Science and Engineering,Tsinghua University,Beijing 100084,China
    3.School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 200237,China
  • Received:2022-06-17 Online:2022-09-10 Published:2022-07-25
  • Contact: HUANG Kai,WU Hui E-mail:kai@bupt.edu.cn;huiwu@tsinghua.edu.cn
  • Supported by:
    the National Natural Science Foundations of China(51902027);the Beijing Natural Science Foundation, China(JQ19005)

Abstract:

In recent years, high-performance single-atom catalysts with maximum metal atom utilization efficiency have become a hot research topic in the field of energy storage and conversion. The high activity of single-atom catalysts is mainly due to their low-coordination environment of metal centers, quantum size effect, and metal- support interaction. Therefore, it is of great significance to develop a general and simple synthetic pathway for high-performance single-atom catalysts based on the structure-activity relationship. Considering industrial applications, wet chemistry synthesis has been considered a promising method for the preparation of single-atom catalysts owing to its simplicity and practicality of massive production. A series of strategies have also been developed for the preparation of supported single-atom catalysts. In this review, we summarized the unique freezing synthetic method to synthesize single-atom materials from the perspective of inhibiting the nucleation of metal species. We further systematically discuss the synthesis mechanism and the catalytic mechanism of the prepared supported single-atom catalysts for extensive applications. Finally, some prospects on the trend of future research in this respect are given.

Key words: Single-atoms catalyst, Nucleation, Catalysis, Wet chemical synthesis

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