Research ArticleNo Access

TiO₂ nanoparticles and CQDs co-decorated mesoporous g-C₃N₄ and their photocatalytic properties for gaseous benzene degradation

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China

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Heng Jia

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China

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Wei Jin

State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, P. R. China

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Feng Li

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China

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Hang Li

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China

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, and

Wen Chen

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China

E-mail Address: chenw@whut.edu.cn

Corresponding author.

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https://doi.org/10.1142/S1793604719500863Cited by:6 (Source: Crossref)

Abstract

Mesoporous g-C₃N₄ is prepared by a hard template method and is then decorated by carbon quantum dots (CQDs) and TiO₂ nanoparticles through an impregnation route followed by a hydrothermal method. The synthesized hybrids possess higher specific surface area up to 131cm²/g and show effective absorption of visible light range and improved instantaneous photocurrent response, which reveals the enhanced photo-generated carrier separation efficiency. The first-order kinetic reaction rate constant of photocatalytic degradation of gaseous benzene by TCPCN-2 is 5.5 times of the bulk g-C₃N₄. Its degradation rate is up to 96.08% with good photocatalytic stability. Thus, the TiO₂ nanoparticles and CQDs co-decorated g-C₃N₄ hybrids are promising photocatalysts.

Keywords:

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