Issue 50, 2021

Growth of narrow-bandgap Cl-doped carbon nitride nanofibers on carbon nitride nanosheets for high-efficiency photocatalytic H2O2 generation

Abstract

Heterojunction construction has been proved to be an effective way to enhance photocatalysis performance. In this work, Cl-doped carbon nitride nanofibers (Cl–CNF) with broadband light harvesting capacity were in situ grown on carbon nitride nanosheets (CNS) by a facile hydrothermal method to construct a type II heterojunction. Benefiting from the joint effect of the improved charge carriers separation efficiency and a broadened visible light absorption range, the optimal heterostructure of Cl–CNF/CNS exhibits a H2O2 evolution rate of 247.5 μmol g−1 h−1 under visible light irradiation, which is 3.4 and 3.1 times as much as those of Cl–CNF (72.2 μmol g−1 h−1) and CNS (80.2 μmol g−1 h−1), respectively. Particularly, the heterojunction nanostructure displays an apparent quantum efficiency of 23.67% at 420 nm. Photoluminescence spectra and photocurrent measurements both verified the enhanced charge carriers separation ability. Our work provides a green and environmentally friendly strategy for H2O2 production by elaborate nanostructure design.

Graphical abstract: Growth of narrow-bandgap Cl-doped carbon nitride nanofibers on carbon nitride nanosheets for high-efficiency photocatalytic H2O2 generation

Supplementary files

Article information

Article type
Paper
Submitted
30 Jul 2021
Accepted
16 Sep 2021
First published
22 Sep 2021
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2021,11, 31385-31394

Growth of narrow-bandgap Cl-doped carbon nitride nanofibers on carbon nitride nanosheets for high-efficiency photocatalytic H2O2 generation

T. Ji, Y. Guo, H. Liu, B. Chang, X. Wei and B. Yang, RSC Adv., 2021, 11, 31385 DOI: 10.1039/D1RA05787A

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