Issue 7, 2022

Exfoliation-induced O-doped g-C3N4 nanosheets with improved photoreactivity towards RhB degradation and H2 evolution

Abstract

Graphitic carbon nitride (g-C3N4) nanosheets exfoliated from their bulk-sized counterparts are limited by a quantum size effect-induced widened bandgap. In this work, an (NH4)2S2O8 (APS) induced thermal exfoliation approach is introduced to fabricate O-doped g-C3N4 nanosheets (OCNs). During this calcination process, the thermal decomposition products (NH3 and H2SO4) from APS not only efficiently promote delamination, but also introduce O doping into the g-C3N4 structure, realizing the synchronization control of the electronic structure and morphology. Compared to the bulk g-C3N4, OCNs show exceptional enhancement of the photocatalytic degradation of RhB and H2 evolution, owing to their enlarged specific surface area, more active edges exposed, and efficient photogenerated carrier separation. This work provides a useful pathway to design and prepare potentially advanced g-C3N4.

Graphical abstract: Exfoliation-induced O-doped g-C3N4 nanosheets with improved photoreactivity towards RhB degradation and H2 evolution

Article information

Article type
Research Article
Submitted
24 des. 2021
Accepted
09 feb. 2022
First published
11 feb. 2022

Inorg. Chem. Front., 2022,9, 1423-1433

Exfoliation-induced O-doped g-C3N4 nanosheets with improved photoreactivity towards RhB degradation and H2 evolution

J. Yan, J. Liu, Y. Sun, D. Ding, C. Wang, L. Sun and X. Li, Inorg. Chem. Front., 2022, 9, 1423 DOI: 10.1039/D1QI01625C

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