Zinc-Based Materials for Photoelectrochemical Reduction of Carbon Dioxide

As one of the most effective ways to convert carbon dioxide (CO2) into fuels and/or high-value-added chemicals, photoelectrochemical (PEC) reduction of CO2 will potentially alleviate both the environment and energy crises. Zinc-based materials are ideal PEC catalysts due to their variable energy band structures, wide sources, and environmental friendliness. However, the achievements and developmental trends of zinc-based PEC catalysts for CO2 reduction have not been systematically summarized. In this review, the principles of PEC CO2 reduction are briefly introduced. Various zinc-based PEC catalysts, including ZnO, Cu2ZnSnS4, Cu2ZnGeS4, ZnSe, ZnTe, Zn alloys, and a zinc porphyrin complex, for the reduction of CO2 are summarized. The challenges and future developing trends of these zinc-based PEC catalysts are prospected.