Novel TiO2/GO/M-MMT nano-heterostructured composites exhibiting high photocatalytic activity

Frontiers in Chemistry

Chemistry

W. Li¹  W. B. Bao¹  C. L. Zhang²  M. Wang²  D. Y. Li²  Y. He²  H. L. Bao² 

[1] School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang, Liaoning, China;School of Materials Science and Engineering, Liaoning Technical University, Fuxin, Liaoning, China;

关键词: TiO/GO/M-MMT composite;    methyl orange;    photocatalytic performance;    electron transfer ability;    nanoheterostructures;   

DOI  :  10.3389/fchem.2023.1113186

 received in 2022-12-01, accepted in 2023-02-27,  发布年份 2023

来源: Frontiers

【 摘 要 】

This study proposed a technique to enhance the photocatalytic properties of TiO2 using graphene oxide (GO) and modified Montmorillonite (M-MMT). TiO2/GO/M-MMT nano-heterostructured composites were prepared via hydrothermal and co-precipitation. The photocatalytic performance was evaluated by investigating the photodegradation rate and absorption behavior of methyl orange (MO) under visible light irradiation. The results showed that TiO2/GO/M-MMT heterojunction exhibited excellent photocatalytic degradation performance, as the degradation rate of MO was observed to be 99.3% within 150 min. The density of adsorbed MO decreased by 62.1% after 210 min of dark adsorption using the TiO2/GO/M-MMT composite, which was significantly higher than that achieved using M-MMT, GO/M-MMT, and TiO2/M-MMT. The nano-heterostructure increased the effective interface between TiO2, GO, and MMT, which increased the charge transfer ability and prolonged the electron-hole separation time. Therefore, the results of this study can be used to design novel photocatalysts to eradicate environmental pollutants.

【 授权许可】

Unknown   
Copyright © 2023 Li, He, Bao, Bao, Li, Zhang and Wang.