Issue 7, 2018

Modification of BiVO4/WO3 composite photoelectrodes with Al2O3via chemical vapor deposition for highly efficient oxidative H2O2 production from H2O

Abstract

The modification of a BiVO4/WO3 photoelectrode with Al2O3 by a chemical vapor deposition (CVD) method significantly improved the faradaic efficiency for H2O2 production (FE(H2O2)) in the photoelectrochemical oxidation of H2O. The faradaic efficiency after passing 0.9 C (after photoirradiation for 15 min using simulated solar light) was 80% using a 2.0 M KHCO3 aqueous solution as an electrolyte. The initial FE(H2O2) (<0.02 C) was almost 100% on the Al2O3/BiVO4/WO3 photoelectrode. The thin Al2O3 layer prevents the oxidative decomposition of the produced H2O2 into O2. The applied bias photon to current efficiency (ABPE) was 2.57% based on H2O2 and O2 production on the photoanode and H2 production on a Pt cathode. Solar light driven simultaneous H2O2 production at the anode for H2O oxidation and the cathode for O2 reduction was also achieved by combining a noble-metal-free biomass-derived carbon cathode without applying any external bias.

Graphical abstract: Modification of BiVO4/WO3 composite photoelectrodes with Al2O3via chemical vapor deposition for highly efficient oxidative H2O2 production from H2O

Supplementary files

Article information

Article type
Paper
Submitted
14 Feb 2018
Accepted
14 May 2018
First published
04 Jun 2018

Sustainable Energy Fuels, 2018,2, 1621-1629

Author version available

Modification of BiVO4/WO3 composite photoelectrodes with Al2O3via chemical vapor deposition for highly efficient oxidative H2O2 production from H2O

Y. Miyase, S. Takasugi, S. Iguchi, Y. Miseki, T. Gunji, K. Sasaki, E. Fujita and K. Sayama, Sustainable Energy Fuels, 2018, 2, 1621 DOI: 10.1039/C8SE00070K

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