Efficient photocatalytic H2 production coupling with selective oxidation of aromatic alcohol under carbon neutrality

To achieve high photocatalytic efficiency, photocatalytic synergistic reaction is a research hotspot in the energy field. A series of ZnxCd1-xS are synthesized, and Zn0.3Cd0.7S performs high photocatalytic activity and stability in the CO2 reduction system coupling with selective oxidation of aromatic alcohol. Taking 4-chlorobenzyl alcohol as an example, H-2 (784 mu mol g(-1) h(-1)) and CO (67 mu mol g(-1) h(-1)) are the main reduction products, and the oxidation product is 4-chlorobenzaldehyde with the rate of 908 mu mol g(-1) h(-1). Moreover, the enhanced reasons of photocatalytic performance are considered from the separation of photogenerated charges, surface defect, band structure, CO2 adsorption and so on. This work improves the utilization rate of the photogenerated electrons and holes, and provides a dual-function photocatalytic system for H-2 production and organic synthesis under carbon neutrality.

Automated summary

This study reports the high photocatalytic performance of a Zn0.3Cd0.7S catalyst in CO2 reduction and selective oxidation of aromatic alcohol, providing the possibility of a dual-function photocatalytic system.