Open Access

ARTICLE

MoSe₂ in flower spheres provides abundant active sites for TiO₂ photocatalytic degradation of RhB

M. Xie^a, W. W. Lu^a, W. Yan^a, Y. C. Wei^a, Y. P. Chen^a,b, J. Xu^a,b,*

a School of Physics and Electronic Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, P. R. China
b Quantum Sensing and Agricultural Intelligence Detection Engineering Center of Jiangsu Province, Zhenjiang, Jiangsu, 212013, P. R. China

* Corresponding Author:

Chalcogenide Letters 2024, 21(3), 217-227. https://doi.org/10.15251/CL.2024.213.217

Received 11 November 2023; Accepted 01 March 2024;

Abstract

In this paper, a MoSe₂/TiO₂ composite photocatalyst was constructed by modifying TiO₂ with MoSe₂ as a group catalyst. The results showed that pure TiO₂ and MoSe₂ had no degradation activity for RhB, and the composite catalyst of 0.03 g MoSe₂ had the best photocatalytic degradation activity for RhB. Through SEM, TEM, UV-VIS absorption spectrum, transient photocurrent curve, photoluminescence spectrum, and electrochemical impedance spectrum analysis, it can be seen that the excellent performance of 0.03 g MoSe₂ composite sample is due to its excellent nanostructure, and uniform TiO₂ nanosheets are attached to MoSe₂ flower spheres. The active site of RhB photocatalytic degradation was increased, the visible light response and photobiological carrier separation were enhanced, and TiO₂ had photocatalytic activity under simulated sunlight.

---

Keywords

---