Flexible, recoverable, and efficient photocatalysts: MoS2/TiO2 heterojunctions grown on amorphous carbon-coated carbon textiles

Yu Sun; Yan-Ling Yang; Hua-Jun Chen; Jiajun Liu; Xiao-Lei Shi; Guoquan Suo; Xiaojiang Hou; Xiaohui Ye; Li Zhang; Siyu Lu; Zhi-Gang Chen

doi:10.1016/j.jcis.2023.07.177

Flexible, recoverable, and efficient photocatalysts: MoS₂/TiO₂ heterojunctions grown on amorphous carbon-coated carbon textiles

J Colloid Interface Sci. 2023 Dec:651:284-295. doi: 10.1016/j.jcis.2023.07.177. Epub 2023 Jul 28.

Authors

Yu Sun¹, Yan-Ling Yang², Hua-Jun Chen³, Jiajun Liu¹, Xiao-Lei Shi⁴, Guoquan Suo¹, Xiaojiang Hou¹, Xiaohui Ye¹, Li Zhang¹, Siyu Lu⁵, Zhi-Gang Chen⁶

Affiliations

¹ School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, China.
² School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, China. Electronic address: yangyanling@sust.edu.cn.
³ School of Environment and Chemistry, Luoyang Institute of Science and Technology, Luoyang 471023, China.
⁴ School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD 4000, Australia.
⁵ Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
⁶ School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD 4000, Australia. Electronic address: zhigang.chen@qut.edu.au.

PMID: 37542903
DOI: 10.1016/j.jcis.2023.07.177

Abstract

Most traditional powder photocatalysts are not easily recovered. Herein, we report a flexible and recoverable photocatalyst with superior photocatalytic activity, in which MoS₂/TiO₂ heterojunctions are grown on amorphous carbon-coated carbon textiles (CT@C-MoS₂/TiO₂). Recoverable CT@C-MoS₂/TiO₂ textile was used to degrade 10 mg L^-1 rhodamine B, leading to a degradation rate of up to 98.8 % within 30 min. Such a degradation rate is much higher than that of most of the reported studies. A density functional theory (DFT) calculation results illustrate charge transfer mechanism inside TiO₂-C, MoS₂-C, and MoS₂/TiO₂ heterojunctions, which shows that CT@C-MoS₂/TiO₂ textile with three electron separation channels has a high photogenerated carrier separation rate, which remarkably enhances the photocatalytic activity. Our work provides a novel strategy to design an efficient and recoverable photocatalyst with high activity.

Keywords: Heterojunction; MoS(2); Photocatalyst; Recoverable; TiO(2).