Recent advances in the construction of structurally diverse catalysts for enhanced photocatalytic CO2 reduction

Photocatalysis is an effective way to address environmental CO 2 pollution and the energy crisis caused by fossil fuel consumption by efficiently transforming CO 2 into high-value-added chemicals. In this review, we focus on the key processes (light capture, electron-hole (e - -h + ) pairs separate and transfer, CO 2 gas adsorption) in CO 2 photoreduction (CO 2 RR). We discuss recent progress in research into the strategy and the rational structure construction of photocatalyst materials such as SPR effect, single atom, surface modification and gas -liquid-solid three-phase system, diverse structures, and such as hollow/porous architectures, surface defects, heterojunctions, dual cocatalysts, and so on. These from the perspective of improving photocatalytic performance by improving light absorption, enhancing CO 2 adsorption, and effectively separating photogenerated e - -h + , also from the perspective towards practicality. Finally, considering the current statuses of the catalyst structures presented, future research challenges and priorities are discussed.