Recent progress and challenges of photocatalytic CO2 conversion into value-added multi-carbon products

In recently years, photocatalytic CO2 conversion into the value-added chemicals represents a promising approach to relieve the current energy and environmental problems, because it can be powered by renewable solar energy. This review introduces the principles and mechanisms of photocatalytic CO2 conversion, with a particular focus on the research progress and key strategies involved in the behavioural manipulation of interfacial electron transfer and selectivit of multi-carbon products. Besides, the structure–activity relationship has also been summarized about the currently reported photocatalyst focuing on generation on multi-carbon products. Furthermore, the review also probes the current challenges and future directions, including improved CO2 conversion efficiency and selectivity, understanded the reaction mechanism and considerated the economic and environmental factors. We sincerely hope that this review will attract more research attention towards photocatalytic CO2 conversion for the synthesis of value-added multi-carbon products.