Recent Advances in Porous Materials for Photocatalytic CO 2 Reduction.

Photocatalytic CO 2 reduction into solar fuels is a promising technology for addressing energy and CO 2 emission issues. Because of the superior properties in CO 2 adsorption and activation, molecular diffusion, light absorption, and charge separation and transfer, porous materials have been developed into a multifunctional platform for photocatalytic CO 2 reduction. In this Perspective, we first discuss the emerging trends of CO 2 reduction in major inorganic porous materials-based photocatalysts, such as mesoporous materials, macroporous materials, hollow materials, hierarchically porous materials, and zeolites. Prospects and challenges in the development of porous materials-based photocatalysts are then outlined. Finally, we envision feasible solutions for the deployment of porous materials to enhance photocatalytic CO 2 reduction performance.