Issue 9, 2015

Highly selective CO2 photoreduction to CO over g-C3N4/Bi2WO6 composites under visible light

Abstract

CO2 is highly stable and therefore extremely difficult to be reduced at room temperature even by photocatalysis. Herein, a series of g-C3N4/Bi2WO6 composites have been synthesized through a facile in situ hydrothermal approach, which demonstrated greatly enhanced response to visible light, and consequently a remarkably enhanced CO2 selective photoreduction to CO. The g-C3N4 content and synthesis parameters of these composites have been tuned to obtain the optimized photocatalytic activity with a peak CO production rate of 5.19 μmol g−1 h−1 under visible light irradiation at room temperature, which was 22 and 6.4 times that on pure g-C3N4 and Bi2WO6, respectively. Based on the matched band energy potentials between g-C3N4 and Bi2WO6 in the synthesized composites, a possible Z-scheme mechanism, which features a significantly promoted separation of photo-generated carriers under visible light irradiation by the composites, has been proposed to account for the distinctive CO2 photoreduction performance.

Graphical abstract: Highly selective CO2 photoreduction to CO over g-C3N4/Bi2WO6 composites under visible light

Supplementary files

Article information

Article type
Paper
Submitted
19 Nov 2014
Accepted
21 Jan 2015
First published
22 Jan 2015

J. Mater. Chem. A, 2015,3, 5189-5196

Highly selective CO2 photoreduction to CO over g-C3N4/Bi2WO6 composites under visible light

M. Li, L. Zhang, X. Fan, Y. Zhou, M. Wu and J. Shi, J. Mater. Chem. A, 2015, 3, 5189 DOI: 10.1039/C4TA06295G

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

Spotlight

Advertisements