Jump to main content
Jump to site search

Issue 55, 2017
Previous Article Next Article

A visible-light-induced photoelectrochemical water-splitting system featuring an organo-photocathode along with a tungsten oxide photoanode

Author affiliations

Abstract

A photoelectrochemical water-splitting system featuring an organo-photocathode of a p–n bilayer was studied, where WO3 was simultaneously utilized as a photoanode. Stoichiometric formation of H2 and O2 was found to occur due to the decomposition of water. In the reference system of a WO3 photoanode and Pt counter electrode, bias voltages more than 0.4 V were needed to be applied for water splitting; however, the present system successfully led to water decomposition by applying only a low voltage of 0.1 V to the system. In the present water-splitting system, oxidizing and reducing powers can be separately generated at the WO3 photoanode and organo-photocathode, respectively, which is distinct from the reference system. Furthermore, electron transfer from WO3 (conduction band) to the hole-retained p-type layer (valence band) in the organo-photocathode can efficiently occur for completing the photoelectrochemical process, thus, resulting in a high concentration of holes available for rate-limiting O2 evolution at WO3 on the basis of efficient charge separation.

Graphical abstract: A visible-light-induced photoelectrochemical water-splitting system featuring an organo-photocathode along with a tungsten oxide photoanode

Back to tab navigation

Supplementary files

Publication details

The article was received on 10 May 2017, accepted on 04 Jul 2017 and first published on 11 Jul 2017


Article type: Paper
DOI: 10.1039/C7RA05272C
Citation: RSC Adv., 2017,7, 34694-34698
  • Open access: Creative Commons BY license
  •   Request permissions

    A visible-light-induced photoelectrochemical water-splitting system featuring an organo-photocathode along with a tungsten oxide photoanode

    Y. Kawai, K. Nagai and T. Abe, RSC Adv., 2017, 7, 34694
    DOI: 10.1039/C7RA05272C

    This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements