Issue 31, 2022

Construction of a double heterojunction between graphite carbon nitride and anatase TiO2 with co-exposed (101) and (001) faces for enhanced photocatalytic degradation

Abstract

This study aimed to promote the separation of photogenerated carriers and improve the redox performance of graphite carbon nitride (g-C3N4) by synthesizing a double-heterojunction-structure photocatalyst, g-C3N4/(101)-(001)-TiO2, through the solvothermal method. The photocatalyst comprised a Z-system formed from g-C3N4 and the (101) plane of TiO2, as well as a surface heterojunction formed from the (101) and (001) planes of TiO2. The results showed that g-C3N4/(101)-(001)-TiO2 had strong photocatalytic activity and stable performance in the photodegradation of paracetamol. The active species ·O2 and ·OH were found to play important roles in the photocatalytic degradation of paracetamol through a radical-quenching experiment. The charge-transfer mechanism was also described in detail. Overall, this work provided a new strategy for the Z-system heterojunction and opened up the application of this structure in the degradation of organic pollutants.

Graphical abstract: Construction of a double heterojunction between graphite carbon nitride and anatase TiO2 with co-exposed (101) and (001) faces for enhanced photocatalytic degradation

Supplementary files

Article information

Article type
Paper
Submitted
12 Mar 2022
Accepted
03 Jul 2022
First published
13 Jul 2022
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2022,12, 20206-20216

Construction of a double heterojunction between graphite carbon nitride and anatase TiO2 with co-exposed (101) and (001) faces for enhanced photocatalytic degradation

J. Sun, L. Deng, J. Sun, T. Shen, X. Wang, R. Zhao, Y. Zhang and B. Wang, RSC Adv., 2022, 12, 20206 DOI: 10.1039/D2RA01620F

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