A new method for the fabrication of a bilayer WO3/Fe2O3 photoelectrode for enhanced photoelectrochemical performance

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Abstract

A bilayer WO3/Fe2O3 heterojunction photoelectrode was prepared with a new approach for photoelectrochemical reactions. WO3 was deposited onto an FTO conductive glass substrate via electrodeposition, followed by the deposition of an ultrathin Fe2O3 layer using the chemical bath deposition method. The presence of Fe2O3 layer improved the light absorption of WO3/Fe2O3 toward visible light region (red-shift). The addition of a thin layer of Fe2O3 on WO3 resulted in higher photocatalytic performance (two-fold improvement) compared to that of pristine WO3. In addition, the WO3/Fe2O3 photoelectrode also showed a positive photoresponse for methanol degradation. The photocurrent generation of the bilayer photoelectrode improved 1.6-fold with the addition of methanol as a sacrificial donor.

Original languageEnglish
Pages (from-to)47-52
Number of pages6
JournalMaterials Research Bulletin
Volume98
DOIs
Publication statusPublished - 1 Feb 2018

Fingerprint

Methanol
Fabrication
fabrication
methyl alcohol
Photocurrents
Electrodeposition
Light absorption
Heterojunctions
electromagnetic absorption
Degradation
electrodeposition
Glass
red shift
photocurrents
heterojunctions
baths
Substrates
degradation
glass

Keywords

  • Direct water splitting
  • Methanol oxidation
  • Ultrathin FeO
  • WO

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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title = "A new method for the fabrication of a bilayer WO3/Fe2O3 photoelectrode for enhanced photoelectrochemical performance",
abstract = "A bilayer WO3/Fe2O3 heterojunction photoelectrode was prepared with a new approach for photoelectrochemical reactions. WO3 was deposited onto an FTO conductive glass substrate via electrodeposition, followed by the deposition of an ultrathin Fe2O3 layer using the chemical bath deposition method. The presence of Fe2O3 layer improved the light absorption of WO3/Fe2O3 toward visible light region (red-shift). The addition of a thin layer of Fe2O3 on WO3 resulted in higher photocatalytic performance (two-fold improvement) compared to that of pristine WO3. In addition, the WO3/Fe2O3 photoelectrode also showed a positive photoresponse for methanol degradation. The photocurrent generation of the bilayer photoelectrode improved 1.6-fold with the addition of methanol as a sacrificial donor.",
keywords = "Direct water splitting, Methanol oxidation, Ultrathin FeO, WO",
author = "Ng, {Kim Hang} and {Effery Minggu}, Lorna and Mark-Lee, {Wun Fui} and Arifin Khuzaimah and Jumali, {Mohammad Hafizuddin} and Mohammad Kassim",
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T1 - A new method for the fabrication of a bilayer WO3/Fe2O3 photoelectrode for enhanced photoelectrochemical performance

AU - Ng, Kim Hang

AU - Effery Minggu, Lorna

AU - Mark-Lee, Wun Fui

AU - Khuzaimah, Arifin

AU - Jumali, Mohammad Hafizuddin

AU - Kassim, Mohammad

PY - 2018/2/1

Y1 - 2018/2/1

N2 - A bilayer WO3/Fe2O3 heterojunction photoelectrode was prepared with a new approach for photoelectrochemical reactions. WO3 was deposited onto an FTO conductive glass substrate via electrodeposition, followed by the deposition of an ultrathin Fe2O3 layer using the chemical bath deposition method. The presence of Fe2O3 layer improved the light absorption of WO3/Fe2O3 toward visible light region (red-shift). The addition of a thin layer of Fe2O3 on WO3 resulted in higher photocatalytic performance (two-fold improvement) compared to that of pristine WO3. In addition, the WO3/Fe2O3 photoelectrode also showed a positive photoresponse for methanol degradation. The photocurrent generation of the bilayer photoelectrode improved 1.6-fold with the addition of methanol as a sacrificial donor.

AB - A bilayer WO3/Fe2O3 heterojunction photoelectrode was prepared with a new approach for photoelectrochemical reactions. WO3 was deposited onto an FTO conductive glass substrate via electrodeposition, followed by the deposition of an ultrathin Fe2O3 layer using the chemical bath deposition method. The presence of Fe2O3 layer improved the light absorption of WO3/Fe2O3 toward visible light region (red-shift). The addition of a thin layer of Fe2O3 on WO3 resulted in higher photocatalytic performance (two-fold improvement) compared to that of pristine WO3. In addition, the WO3/Fe2O3 photoelectrode also showed a positive photoresponse for methanol degradation. The photocurrent generation of the bilayer photoelectrode improved 1.6-fold with the addition of methanol as a sacrificial donor.

KW - Direct water splitting

KW - Methanol oxidation

KW - Ultrathin FeO

KW - WO

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