Cu-doped SnS₂ nanosheets with superior visible-light photocatalytic CO₂ reduction performance

Abstract

Photocatalytic CO2 reduction utilizing solar energy is a clean, environment-friendly strategy converting CO2 into hydrocarbon fuels to solve energy crisis and climate issues. Herein, we report the synthesis of Cu...

Enhanced photocatalytic performance of SnS2 under visible light irradiation: strategies and future perspectives

“…Presently, the total number of publications on SnS 2 as a photocatalyst remains at less than 500, significantly lower compared with conventional photocatalysts such as TiO 2 or ZnO, and even other transition metal dichalcogenide (TMD) materials like MoS 2 and WS 2 (based on Scopus data). As a 2D photocatalyst material, SnS 2 has found applications across various domains, including air purification, 44,55 wastewater treatment, 47,84–87 hydrogen production, 88–97 and antibacterial purposes, 41 CO 2 reduction, and 89,91,98–100 nitrogen fixation. 92,94,101…”

“…Recent endeavors have focused on optimizing and enhancing CO 2 reduction through various techniques, including the formation of Z-scheme heterojunctions, 110 type II heterojunctions, vacancy generation, 106 and doping processes. 97 Among these strategies, Z-scheme heterojunctions have shown significant promise in improving the CO 2 reduction process. Wang et al reported the synthesis of a Z-scheme photocatalyst, SnO 2 /SnS 2 /Cu 2 SnS 3 , which achieved a CO 2 reduction to ethanol rate of 28.44 mmol g −1 h −1 as a byproduct.…”

“…In the case of SnS 2 , the doping process involves the replacement of one or more SnS 2 atoms with other atoms, including cations or anions. Transition metal elements such as Cu, 97,151 Ce, 152 Zr, 144 and others have been successfully integrated into the SnS 2 structure. For instance, Liu et al 153 demonstrated the doping of Cu onto the SnS 2 layer via a hydrothermal reaction for H 2 production applications under visible light irradiation.…”