Metal sulfide derived photocatalyst for wastewater treatment

Pollution in the environment is a serious problem that threatens the ecosystems all over the world, and methods to restore the environment have been developed. Metal sulfide-derived semiconductor (SC) photocatalysis has been suggested as a possible method because of its favorable bandgap configurations, remarkable light-harvesting activity, and excellent catalytic activity. In our work, current progresses of metal sulfide-derived photocatalysts applied to the field of environmental remediation are comprehensively discussed. The basic ideas and unique benefits of metal sulfide SC s are thoroughly examined. Various approaches to synthesis and modification, such as doping, formation of heterojunctions, and vacancy engineering, are mentioned to counteract the intrinsic limitations like fast charge recombination and photocorrosion. Special consideration is given to mechanisms of photocorrosion and mitigation techniques like sacrificial agents and heterostructure fabrication. In addition to idealized model systems, the paper reviews and critically discusses the impact of the real wastewater matrices on photocatalytic performance, particularly the influence of coexisting inorganic ions, such as nitrates, sulfates, and chlorides. Lastly, the field’s present technical difficulties, constraints, and potential are emphasized. A basic framework and strategic approach for the development of high-performance metal sulfide photocatalysts meant for environmentally sustainable remediation are presented in this paper.