Issue 10, 2023

Removing unreacted amino groups in graphitic carbon nitride through residual heating to improve the photocatalytic performance

Abstract

In most of the research about graphitic carbon nitride (g-C3N4), g-C3N4 is prepared through the calcination of nitrogen-rich precursors. However, such a preparation method is time-consuming, and the photocatalytic performance of pristine g-C3N4 is lackluster due to the unreacted amino groups on the surface of g-C3N4. Therefore, a modified preparation method, calcination through residual heating, was developed to achieve rapid preparation and thermal exfoliation of g-C3N4 simultaneously. Compared with pristine g-C3N4, the samples prepared by residual heating had fewer residual amino groups, a thinner 2D structure, and higher crystallinity, which led to a better photocatalytic performance. The photocatalytic degradation rate of the optimal sample for rhodamine B could reach 7.8 times higher than that of pristine g-C3N4.

Graphical abstract: Removing unreacted amino groups in graphitic carbon nitride through residual heating to improve the photocatalytic performance

Supplementary files

Article information

Article type
Paper
Submitted
30 Dec 2022
Accepted
21 Feb 2023
First published
27 Feb 2023
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2023,13, 6688-6698

Removing unreacted amino groups in graphitic carbon nitride through residual heating to improve the photocatalytic performance

W. Zhang, F. Wang, H. Liu, Y. Wang and M. Chen, RSC Adv., 2023, 13, 6688 DOI: 10.1039/D2RA08324H

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