Coupling Strategy for CO2 Valorization Integrated with Organic Synthesis by Heterogeneous Photocatalysis.

Photocatalytic reduction of CO 2 into solar fuels and/or fine chemicals is a promising way to enrich energy supply and reduce greenhouse gas emissions. However, the conventional reaction system for CO 2 photoreduction with pure H 2 O or sacrificial agents usually suffers from low catalytic efficiency, poor stability or cost-ineffective atom economy. Recent surge of integrating photocatalytic CO 2 valorization with selective organic synthesis into one reaction system indicates an efficient modus operandi that enables sufficient utilization of photogenerated electrons and holes to achieve the sustainable economic and social development goals. This paper reviews the current advances in cooperative photoredox reaction systems of integrating CO 2 valorization with organics upgrading based on heterogeneous photocatalysis. The applications and virtues of this photoredox-based win-win coupling strategy, as well as the understanding of the underlying reaction mechanisms are demonstrated. The ongoing challenges and prospects for further exploration of such versatile and efficient photoredox coupling reaction systems integrating CO 2 valorization with organic synthesis are critically discussed.