Issue 39, 2016

Carbon dot and BiVO4 quantum dot composites for overall water splitting via a two-electron pathway

Abstract

Carbon dot and BiVO4 quantum dot composites (CDs/BiVO4 QDs) show a significantly improved photocatalytic activity and high stability for overall water splitting. By using 5% CDs/BiVO4 QDs as photocatalysts, the H2 evolution of 0.92 μmol h−1, was achieved under solar light irradiation without any cocatalysts or sacrificial reagents, which is about 4 times that of BiVO4 QDs (0.21 μmol h−1). Note that, for the CD/BiVO4 QD catalyst, the produced H2 and O2 are approximately equal to the stoichiometric ratio (H2 : O2 = 1.80 : 1), while that of BiVO4 QDs is nonstoichiometric (about only 0.06 : 1). In addition, the present water splitting occurs via a two-electron pathway and CDs and BiVO4 QDs served as the reduction and oxidation reaction active sites, respectively.

Graphical abstract: Carbon dot and BiVO4 quantum dot composites for overall water splitting via a two-electron pathway

Supplementary files

Article information

Article type
Paper
Submitted
25 Jul 2016
Accepted
31 Aug 2016
First published
31 Aug 2016

Nanoscale, 2016,8, 17314-17321

Carbon dot and BiVO4 quantum dot composites for overall water splitting via a two-electron pathway

X. Wu, J. Zhao, S. Guo, L. Wang, W. Shi, H. Huang, Y. Liu and Z. Kang, Nanoscale, 2016, 8, 17314 DOI: 10.1039/C6NR05864G

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