Research progress on photoelectrochemical conversion of carbon dioxide

This review systematically presents the latest advancements in photoelectrochemical (PEC) CO 2 reduction. The article provides an in-depth analysis of the core mechanisms underlying CO 2 photoelectrocatalytic reduction, covering strategies for light absorption enhancement, effective generation of photogenerated carriers, separation and transport kinetics, as well as the corrosion resistance and surface catalytic activity of electrode materials. Focusing on photoelectrochemical CO 2 reduction for C1 product synthesis, the study details the formation pathways and selective control strategies for key products such as CO, CH 3 OH, and formic acid. Given the critical importance of C-N bond formation in fine chemical synthesis, the article further explores co-reduction strategies for CO 2 with N 2 and CO 2 with NO 3 - . Additionally, it highlights the potential of PEC pathways for synthesizing high-value-added products like amino acids. The review offers a forward-looking analysis of the scientific challenges, technical bottlenecks, and future opportunities in current photoelectrochemical CO 2 conversion technologies, aiming to provide theoretical guidance and practical references for achieving efficient and sustainable high-value utilization of carbon resources.