Catalytic CO2 Conversion to C1 Chemicals over Single-Atom Catalysts

Carbon dioxide, as an abundant and nontoxic C1 resource, can be extensively applied to produce C1 building blocks via direct and indirect routes. On account of the stable electronic structure and high activation energy of CO2, the most challenging problem of CO(2 )conversion is the rational design of low-cost and efficient catalysts with attractive performance. Single-atom catalysts (SACs) with atomically dispersed metal atoms, strong metal-support interaction, and tunable/unsaturated coordination environment offer a potential choice by achieving maximum atomic utilization and lowering the CO2 activation barrier. Furthermore, the geometric and electronic structure of SACs can be easily regulated by tuning the coordination environment of single atoms, which significantly affects their catalytic performance. In this review, therefore, a comprehensive review of thermocatalytic CO2 conversion to C1 chemicals over SACs is presented. Specifically, the physiochemical and electronic properties, synthesis methods, and characterization technologies are introduced. Thereafter, an overview of catalytic performance and mechanism of SACs is described during thermocatalytic CO2 conversion to C1 chemicals. Finally, the main limitations of current studies on CO2 conversion to C1 chemicals over SACs are summarized, and simultaneouslyperspectives on the future are proposed, in order to provide a guidance for decarbonizing the industries and cycling greenhouse gases.

Automated summary

This review provides a comprehensive overview of the catalytic performance and mechanism of single-atom catalysts (SACs) in the thermocatalytic conversion of CO2 to C1 chemicals. SACs offer advantages in performance tuning through the regulation of coordination environment. However, there are still limitations in current studies that need to be addressed in order to drive decarbonization and greenhouse gas cycling in industries.