Recent Progress in All‐Solid‐State Z‐Scheme Heterostructures for Photoreduction of CO2

Abstract

AbstractPhotoreduction of CO2 into valuable fuels using semiconductors has been known as a potential mean to simultaneously alleviate environmental and energy issues. Z‐scheme photocatalytic systems can realize spatial separation of photogenerated charges and ensure strong redox capability simultaneously. Particularly, the all‐solid‐state Z‐scheme photocatalysts for non aqueous redox mediators have been widely used for CO2 reduction. This review provides a comprehensive outlook of the essential components and recent advancements in all‐solid‐state Z‐scheme systems designed for the photocatalytic reduction of CO2, including indirect Z‐scheme, direct Z‐scheme system, and mechanism on Z‐scheme surface. Finally, a brief outlook on the challenges and novel courses within this domain is presented, which will give a rational guideline to improve the efficiency of hybrid photocatalysts for Z‐scheme CO2 reduction.