Dual-functional MoS2 sheet-modified CdS branch-like heterostructures with enhanced photostability and photocatalytic activity

Abstract

CdS/MoS₂ heterostructures with a branch-like morphology have been prepared via a one-pot hydrothermal method. The as-prepared CdS/MoS₂ heterostructures exhibited enhanced photocatalytic activity and photostability for the degradation of organic dyes. It is believed that the 2D MoS₂ sheets supporting CdS form a large number of interfaces, which may significantly increase the separation of electron/hole pairs, thus greatly enhancing the photocatalytic activity. On the other hand, the matched energy bands of the CdS/MoS₂ heterostructure also allow hole transfer from CdS to MoS₂, thus reducing CdS corrosion.