Jump to main content
Jump to site search

Issue 47, 2017

Photosensitivity of g-C3N4/S-doped carbon composites: study of surface stability upon exposure to CO2 and/or water in ambient light

Author affiliations

Abstract

Two series of materials based on graphitic carbon nitride (GCN) and sulfur-containing carbon (physical mixture and composite) were synthesized. The stability of their surface features upon exposure to either water, CO2 or to water and CO2 combined conditions in solar light was tested. Both materials generated photocurrent upon light exposure. The estimated band gap alignments indicate that although on both composite and physical mixture water splitting and CO2 reduction can take place in visible light, differences are expected in their extents. The results suggest that oxidation of water is more favorable on the composite while the physical mixture favors water and CO2 reduction, owing to the preserved s-triazine structure. While the surface of the former is oxidized by released oxygen, on the physical mixture material some degree of self-reduction is also noticed. The decrease in the porosity of the composite is linked to the oxidation of the carbon matrix.

Graphical abstract: Photosensitivity of g-C3N4/S-doped carbon composites: study of surface stability upon exposure to CO2 and/or water in ambient light

Supplementary files

Article information


Submitted
23 Aug 2017
Accepted
07 Nov 2017
First published
08 Nov 2017

J. Mater. Chem. A, 2017,5, 24880-24891
Article type
Paper

Photosensitivity of g-C3N4/S-doped carbon composites: study of surface stability upon exposure to CO2 and/or water in ambient light

W. Li, E. Rodríguez-Castellón and T. J. Bandosz, J. Mater. Chem. A, 2017, 5, 24880 DOI: 10.1039/C7TA07430A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.


Social activity

Search articles by author

Spotlight

Advertisements