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

Abstract

Highlights: • A thin layer of Fe{sub 2}O{sub 3} is layered on the electrodeposited WO{sub 3} photoelectrode. • The light absorption of WO{sub 3} was extended towards the visible light region, resulting higher photoelctrochemical performance. • Charge transfer mechanism in the bilayer photoanode was suggested. - Abstract: A bilayer WO{sub 3}/Fe{sub 2}O{sub 3} heterojunction photoelectrode was prepared with a new approach for photoelectrochemical reactions. WO{sub 3} was deposited onto an FTO conductive glass substrate via electrodeposition, followed by the deposition of an ultrathin Fe{sub 2}O{sub 3} layer using the chemical bath deposition method. The presence of Fe{sub 2}O{sub 3} layer improved the light absorption of WO{sub 3}/Fe{sub 2}O{sub 3} toward visible light region (red-shift). The addition of a thin layer of Fe{sub 2}O{sub 3} on WO{sub 3} resulted in higher photocatalytic performance (two-fold improvement) compared to that of pristine WO{sub 3}. In addition, the WO{sub 3}/Fe{sub 2}O{sub 3} 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.

Authors:
;  [1];  [2];  [2];  [2]
  1. School of Chemical Sciences & Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor (Malaysia)
  2. Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor (Malaysia)
Publication Date:
OSTI Identifier:
22805367
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 98; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; CHARGE TRANSPORT; ELECTRODEPOSITION; FABRICATION; GLASS; HETEROJUNCTIONS; IRON OXIDES; METHANOL; PHOTOANODES; PHOTOCATALYSIS; PHOTOCURRENTS; RED SHIFT; THIN FILMS; TUNGSTEN OXIDES; VISIBLE RADIATION

Citation Formats

Ng, Kim Hang, Minggu, Lorna Jeffery, E-mail: lorna_jm@ukm.edu.my, Mark-Lee, Wun Fui, Arifin, Khuzaimah, Jumali, Mohammad Hafizuddin Hj, School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Kassim, Mohammad B., and School of Chemical Sciences & Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor. A new method for the fabrication of a bilayer WO3/Fe2O3 photoelectrode for enhanced photoelectrochemical performance. United States: N. p., 2018. Web. doi:10.1016/J.MATERRESBULL.2017.04.019.
Ng, Kim Hang, Minggu, Lorna Jeffery, E-mail: lorna_jm@ukm.edu.my, Mark-Lee, Wun Fui, Arifin, Khuzaimah, Jumali, Mohammad Hafizuddin Hj, School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Kassim, Mohammad B., & School of Chemical Sciences & Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor. A new method for the fabrication of a bilayer WO3/Fe2O3 photoelectrode for enhanced photoelectrochemical performance. United States. https://doi.org/10.1016/J.MATERRESBULL.2017.04.019
Ng, Kim Hang, Minggu, Lorna Jeffery, E-mail: lorna_jm@ukm.edu.my, Mark-Lee, Wun Fui, Arifin, Khuzaimah, Jumali, Mohammad Hafizuddin Hj, School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Kassim, Mohammad B., and School of Chemical Sciences & Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor. Thu . "A new method for the fabrication of a bilayer WO3/Fe2O3 photoelectrode for enhanced photoelectrochemical performance". United States. https://doi.org/10.1016/J.MATERRESBULL.2017.04.019.
@article{osti_22805367,
title = {A new method for the fabrication of a bilayer WO3/Fe2O3 photoelectrode for enhanced photoelectrochemical performance},
author = {Ng, Kim Hang and Minggu, Lorna Jeffery, E-mail: lorna_jm@ukm.edu.my and Mark-Lee, Wun Fui and Arifin, Khuzaimah and Jumali, Mohammad Hafizuddin Hj and School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor and Kassim, Mohammad B. and School of Chemical Sciences & Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor},
abstractNote = {Highlights: • A thin layer of Fe{sub 2}O{sub 3} is layered on the electrodeposited WO{sub 3} photoelectrode. • The light absorption of WO{sub 3} was extended towards the visible light region, resulting higher photoelctrochemical performance. • Charge transfer mechanism in the bilayer photoanode was suggested. - Abstract: A bilayer WO{sub 3}/Fe{sub 2}O{sub 3} heterojunction photoelectrode was prepared with a new approach for photoelectrochemical reactions. WO{sub 3} was deposited onto an FTO conductive glass substrate via electrodeposition, followed by the deposition of an ultrathin Fe{sub 2}O{sub 3} layer using the chemical bath deposition method. The presence of Fe{sub 2}O{sub 3} layer improved the light absorption of WO{sub 3}/Fe{sub 2}O{sub 3} toward visible light region (red-shift). The addition of a thin layer of Fe{sub 2}O{sub 3} on WO{sub 3} resulted in higher photocatalytic performance (two-fold improvement) compared to that of pristine WO{sub 3}. In addition, the WO{sub 3}/Fe{sub 2}O{sub 3} 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.},
doi = {10.1016/J.MATERRESBULL.2017.04.019},
url = {https://www.osti.gov/biblio/22805367}, journal = {Materials Research Bulletin},
issn = {0025-5408},
number = ,
volume = 98,
place = {United States},
year = {2018},
month = {2}
}