Novel TiO 2 /GO/M-MMT nano-heterostructured composites exhibiting high photocatalytic activity.

Autor: Li W; School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang, Liaoning, China., He Y; School of Materials Science and Engineering, Liaoning Technical University, Fuxin, Liaoning, China., Bao WB; School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang, Liaoning, China., Bao HL; School of Materials Science and Engineering, Liaoning Technical University, Fuxin, Liaoning, China., Li DY; School of Materials Science and Engineering, Liaoning Technical University, Fuxin, Liaoning, China., Zhang CL; School of Materials Science and Engineering, Liaoning Technical University, Fuxin, Liaoning, China., Wang M; School of Materials Science and Engineering, Liaoning Technical University, Fuxin, Liaoning, China.
Jazyk: angličtina
Zdroj: Frontiers in chemistry [Front Chem] 2023 Mar 09; Vol. 11, pp. 1113186. Date of Electronic Publication: 2023 Mar 09 (Print Publication: 2023).
DOI: 10.3389/fchem.2023.1113186
Abstrakt: This study proposed a technique to enhance the photocatalytic properties of TiO 2 using graphene oxide (GO) and modified Montmorillonite (M-MMT). TiO 2 /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 TiO 2 /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 TiO 2 /GO/M-MMT composite, which was significantly higher than that achieved using M-MMT, GO/M-MMT, and TiO 2 /M-MMT. The nano-heterostructure increased the effective interface between TiO 2 , 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.
Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
(Copyright © 2023 Li, He, Bao, Bao, Li, Zhang and Wang.)
Databáze: MEDLINE
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