Facile synthesis of ternary Ti3C2–OH/ln2S3/CdS composite with efficient adsorption and photocatalytic performance towards organic dyes

Abstract

Ternary Ti3C2–OH/ln2S3/CdS composites with an efficient visible-light-driven photocatalytic performance have been prepared via a facile hydrothermal synthesis method. The photo-degradation experiments verified that Ti3C2–OH/ln2S3/CdS composite with a large surface area of 68.2 m2/g exhibited an enhanced photocatalytic activity and adsorption capacity towards Rhodamine B under visible light irradiation, which was higher than that of the naked CdS and ln2S3, respectively. Furthermore, Ti3C2–OH/ln2S3/CdS composite showed robust degradation efficiency for mixture dyes of RhB and Methyl Orange (MO), and its catalytic ability was superior to that of ternary GO/ln2S3/CdS composite. The trapping experiments for active species revealed that hole (h+) and •O2− species played a critical role in the removal of organic pollutants. In summary, the enhanced photocatalytic performance of Ti3C2–OH/ln2S3/CdS photocatalyst was derived from an excellent charge carrier separation and transfer of Ti3C2–OH MXene and the synergistic effect between CdS and ln2S3which resulting in strong visible light response.