Facile synthesis of tungsten oxide – Bismuth vanadate nanoflakes as photoanode material for solar water splitting

Akram A.M. Ibrahim; Ibrahim Khan; Naseer Iqbal; Ahsanullhaq Qurashi

doi:10.1016/j.ijhydene.2016.09.095

Facile synthesis of tungsten oxide – Bismuth vanadate nanoflakes as photoanode material for solar water splitting

Akram A.M. Ibrahim, Ibrahim Khan, Naseer Iqbal, Ahsanullhaq Qurashi

Research output: Journal Publication › Article › peer-review

46 Citations (Scopus)

Abstract

This research article describes the synthesis of hetero-structured WO₃/BiVO₄ nanoflakes as photoanode material for photoelectrochemical water splitting. The heterojunction WO₃/BiVO₄ nanoflakes developed by facile hydrothermal method. WO₃/BiVO₄ uniform films fabricated simply by drop casting technique onto indium oxide tin oxide (ITO) coated glass substrates. Detailed morphological, structural and compositional characterization of WO₃/BiVO₄ carried out by XRD, FE-SEM, and EDX techniques. Optical properties studied by Raman and UV–VIS spectroscopy, respectively. The band gap energy of WO₃/BiVO₄ hetero-junction estimated to be about 2.00 eV. These WO₃/BiVO₄ heterojunction structures offered enhanced photo-conversion efficiency and increased photo-corrosion stability. In addition, these nanoflakes films showed significantly enhanced photo-electrochemical properties due to their high surface-area and enhanced separation of the photo-generated charge at the WO₃/BiVO₄ interface. The effect of calcination temperature on WO₃/BiVO₄ also investigated.

Original language	English
Pages (from-to)	3423-3430
Number of pages	8
Journal	International Journal of Hydrogen Energy
Volume	42
Issue number	5
DOIs	https://doi.org/10.1016/j.ijhydene.2016.09.095
Publication status	Published - 2 Feb 2017
Externally published	Yes

Keywords

Solar water splitting
WO
WO/BiVO heterojunctions
WO/BiVO nanoflakes

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ijhydene.2016.09.095

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title = "Facile synthesis of tungsten oxide – Bismuth vanadate nanoflakes as photoanode material for solar water splitting",

abstract = "This research article describes the synthesis of hetero-structured WO3/BiVO4 nanoflakes as photoanode material for photoelectrochemical water splitting. The heterojunction WO3/BiVO4 nanoflakes developed by facile hydrothermal method. WO3/BiVO4 uniform films fabricated simply by drop casting technique onto indium oxide tin oxide (ITO) coated glass substrates. Detailed morphological, structural and compositional characterization of WO3/BiVO4 carried out by XRD, FE-SEM, and EDX techniques. Optical properties studied by Raman and UV–VIS spectroscopy, respectively. The band gap energy of WO3/BiVO4 hetero-junction estimated to be about 2.00 eV. These WO3/BiVO4 heterojunction structures offered enhanced photo-conversion efficiency and increased photo-corrosion stability. In addition, these nanoflakes films showed significantly enhanced photo-electrochemical properties due to their high surface-area and enhanced separation of the photo-generated charge at the WO3/BiVO4 interface. The effect of calcination temperature on WO3/BiVO4 also investigated.",

keywords = "Solar water splitting, WO, WO/BiVO heterojunctions, WO/BiVO nanoflakes",

author = "Ibrahim, {Akram A.M.} and Ibrahim Khan and Naseer Iqbal and Ahsanullhaq Qurashi",

note = "Publisher Copyright: {\textcopyright} 2016 Hydrogen Energy Publications LLC",

year = "2017",

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doi = "10.1016/j.ijhydene.2016.09.095",

language = "English",

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AU - Ibrahim, Akram A.M.

AU - Khan, Ibrahim

AU - Iqbal, Naseer

AU - Qurashi, Ahsanullhaq

PY - 2017/2/2

Y1 - 2017/2/2

N2 - This research article describes the synthesis of hetero-structured WO3/BiVO4 nanoflakes as photoanode material for photoelectrochemical water splitting. The heterojunction WO3/BiVO4 nanoflakes developed by facile hydrothermal method. WO3/BiVO4 uniform films fabricated simply by drop casting technique onto indium oxide tin oxide (ITO) coated glass substrates. Detailed morphological, structural and compositional characterization of WO3/BiVO4 carried out by XRD, FE-SEM, and EDX techniques. Optical properties studied by Raman and UV–VIS spectroscopy, respectively. The band gap energy of WO3/BiVO4 hetero-junction estimated to be about 2.00 eV. These WO3/BiVO4 heterojunction structures offered enhanced photo-conversion efficiency and increased photo-corrosion stability. In addition, these nanoflakes films showed significantly enhanced photo-electrochemical properties due to their high surface-area and enhanced separation of the photo-generated charge at the WO3/BiVO4 interface. The effect of calcination temperature on WO3/BiVO4 also investigated.

AB - This research article describes the synthesis of hetero-structured WO3/BiVO4 nanoflakes as photoanode material for photoelectrochemical water splitting. The heterojunction WO3/BiVO4 nanoflakes developed by facile hydrothermal method. WO3/BiVO4 uniform films fabricated simply by drop casting technique onto indium oxide tin oxide (ITO) coated glass substrates. Detailed morphological, structural and compositional characterization of WO3/BiVO4 carried out by XRD, FE-SEM, and EDX techniques. Optical properties studied by Raman and UV–VIS spectroscopy, respectively. The band gap energy of WO3/BiVO4 hetero-junction estimated to be about 2.00 eV. These WO3/BiVO4 heterojunction structures offered enhanced photo-conversion efficiency and increased photo-corrosion stability. In addition, these nanoflakes films showed significantly enhanced photo-electrochemical properties due to their high surface-area and enhanced separation of the photo-generated charge at the WO3/BiVO4 interface. The effect of calcination temperature on WO3/BiVO4 also investigated.

KW - Solar water splitting

KW - WO

KW - WO/BiVO heterojunctions

KW - WO/BiVO nanoflakes

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DO - 10.1016/j.ijhydene.2016.09.095

M3 - Article

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SN - 0360-3199

VL - 42

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EP - 3430

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 5

ER -

Facile synthesis of tungsten oxide – Bismuth vanadate nanoflakes as photoanode material for solar water splitting

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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