Visible Light-Driven Photocatalytic Rhodamine B Degradation Using CdS Nanorods

In this work, highly crystalline CdS nanorods (NRs) were successfully synthesized by a facile, one-step solvothermal method. The as-prepared CdS NRs powder was characterized by XRD, FESEM, Raman, PL, XPS, BET, and UV-visible techniques to evaluate the structural, morphological, and optical properties. The photocatalytic performance of the as-synthesized CdS NRs was investigated for the photodegradation of RhB dye under visible light irradiations. It has been found that CdS NRs show maximum RhB degradation efficiency of 88.4% in 120 min. The excellent photodegradation ability of the CdS NRs can be attributed to their rod-like structure together with their large surface area and surface state. The kinetic study indicated that the photodegradation process was best described by the pseudo-first-order kinetic model. The possible mechanism for the photodegradation of RhB dye over CdS NRs was proposed in this paper.

Automated summary

Highly crystalline CdS nanorods were successfully synthesized through a facile, one-step solvothermal method and characterized for structural, morphological, and optical properties. The CdS nanorods exhibited excellent photodegradation efficiency for RhB dye under visible light irradiation, with a maximum degradation of 88.4% in 120 minutes. The photodegradation process followed a pseudo-first-order kinetic model, and a possible mechanism was proposed in the study.