Abstract
? 2022 Elsevier B.V.In this paper, 500–600 nm hierarchical flower-like Cu2CdSnS4 (CCTS) was synthesized by two-step method, which was applied in the photodegradation to malachite green (MG) for the first time. With spherical CdSn(OH)6 prepared by co-precipitation method as the precursor, flower-like CCTS micro/nano structured crystals were synthesized by microwave method. The formation of CCTS experienced CdSn(OH)6 coordinating with sulfur source, then dissolving partly to combine with Cu2+ in the existence of PVP as the capping agent, finally to form flower-like structure. The characterization of products showed that stannite CCTS had narrow bandgap and large special interface area, contributing to excellent photodegradation to MG up to 90.29%. The decomposition of MG may originate from N-demethylation, removal of the benzene ring and ring-open reactions. The deep understanding of the photodegradation mechanism may provide the guidance in the long-term study of MG.
NSTL
Elsevier