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A perspective on oxide-supported single-atom catalysts.

Junyi Zhou1, Zhen Xu1, Meijia Xu1

  • 1BNLMS, College of Chemistry and Molecular Engineering, Peking University Beijing 100871 China kaiwu@pku.edu.cn xiongzhou@pku.edu.cn.

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Single-atom catalysts (SACs) offer high efficiency and performance. This review overviews factors influencing SACs on oxide supports, aiding future catalyst design.

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Area of Science:

  • Heterogeneous catalysis
  • Materials science
  • Surface chemistry

Background:

  • Single-atom catalysts (SACs) maximize metal atom efficiency and enhance catalytic performance.
  • Understanding SACs' working principles is crucial for designing advanced catalysts.
  • Numerous factors affect SAC performance, complicating structure-activity correlations.

Purpose of the Study:

  • To review recent developments in determining factors for SAC stability, activity, and selectivity on oxide supports.
  • To discuss reaction mechanisms and methods for correlating SAC properties with atomic-level structures.
  • To introduce a surface free energy approach for fabricating well-defined modelled SACs.

Main Methods:

  • Literature review of oxide-supported single-atom catalysts.
  • Analysis of factors affecting stability, activity, and selectivity.
  • Examination of reaction mechanisms and structure-property correlation methods.
  • Introduction of the surface free energy approach for catalyst fabrication.

Main Results:

  • Overview of key factors influencing SAC performance on oxide supports.
  • Discussion of various reaction mechanisms and analytical techniques.
  • Highlighting a novel surface free energy approach for precise SAC design.
  • Identification of challenges and future directions in SAC development.

Conclusions:

  • Factors influencing SACs on oxide supports are complex but crucial for optimization.
  • Advanced methods are needed to correlate atomic-level structure with catalytic performance.
  • The surface free energy approach shows promise for fabricating well-defined SACs.
  • Further research is essential to address key issues in SAC development for future applications.