Photoelectrochemical activity of WO<inf>3</inf>/Au in aqueous electrolyte with addition of methanol

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Tungsten trioxide (WO<inf>3</inf>) thin films were prepared on fluorine-doped tin oxide (FTO) substrate by electrodeposition method using peroxotungstic acid with pH 1.3 as the electrolytes. The as-deposited sample was calcined at 350°C. The gold (Au) loading on WO<inf>3</inf> films was carried out by using the sputtering method with a different sputtering time of 1s and 5s. The photoelectrochemical activities of bare WO<inf>3</inf> and WO<inf>3</inf>/Au with different Au loading in 0.5 M Na2SO<inf>4</inf> with and without addition 0.2 M methanol were studied. The linear scan Voltammetry in three electrode system was employed and the photocurrent generated was presented. The electrode prepared with Au loading shows higher photocurrent compared with WO<inf>3</inf> alone. Meanwhile, photocurrent with the addition of methanol in the electrolyte is higher compared to the electrolyte without the addition of methanol. The structural properties were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and the absorption of light was measured using UV-Vis spectrophotometer. It has shown that the structure, thickness, crystallinity, and the band gap of WO<inf>3</inf> does not change with Au loading.

Original languageEnglish
Title of host publicationIET Seminar Digest
PublisherInstitution of Engineering and Technology
Volume2014
EditionCP659
DOIs
Publication statusPublished - 2014
Event3rd IET International Conference on Clean Energy and Technology, CEAT 2014 - Kuching, Malaysia
Duration: 24 Nov 201426 Nov 2014

Other

Other3rd IET International Conference on Clean Energy and Technology, CEAT 2014
CountryMalaysia
CityKuching
Period24/11/1426/11/14

Fingerprint

Methanol
Photocurrents
Electrolytes
Sputtering
Ultraviolet spectrophotometers
Electrodes
Voltammetry
Tin oxides
Fluorine
Electrodeposition
Tungsten
Structural properties
Energy gap
Electron microscopes
Gold
Scanning
X ray diffraction
Thin films
Acids
Substrates

Keywords

  • Electrodeposition
  • Gold
  • Methanol
  • Photoelectrochemical
  • Tungsten trioxide

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Jaafar, N. A., Effery Minggu, L., & Kassim, M. (2014). Photoelectrochemical activity of WO<inf>3</inf>/Au in aqueous electrolyte with addition of methanol. In IET Seminar Digest (CP659 ed., Vol. 2014). Institution of Engineering and Technology. https://doi.org/10.1049/cp.2014.1461

Photoelectrochemical activity of WO<inf>3</inf>/Au in aqueous electrolyte with addition of methanol. / Jaafar, Nurul Akmal; Effery Minggu, Lorna; Kassim, Mohammad.

IET Seminar Digest. Vol. 2014 CP659. ed. Institution of Engineering and Technology, 2014.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Jaafar, NA, Effery Minggu, L & Kassim, M 2014, Photoelectrochemical activity of WO<inf>3</inf>/Au in aqueous electrolyte with addition of methanol. in IET Seminar Digest. CP659 edn, vol. 2014, Institution of Engineering and Technology, 3rd IET International Conference on Clean Energy and Technology, CEAT 2014, Kuching, Malaysia, 24/11/14. https://doi.org/10.1049/cp.2014.1461
Jaafar, Nurul Akmal ; Effery Minggu, Lorna ; Kassim, Mohammad. / Photoelectrochemical activity of WO<inf>3</inf>/Au in aqueous electrolyte with addition of methanol. IET Seminar Digest. Vol. 2014 CP659. ed. Institution of Engineering and Technology, 2014.
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N2 - Tungsten trioxide (WO3) thin films were prepared on fluorine-doped tin oxide (FTO) substrate by electrodeposition method using peroxotungstic acid with pH 1.3 as the electrolytes. The as-deposited sample was calcined at 350°C. The gold (Au) loading on WO3 films was carried out by using the sputtering method with a different sputtering time of 1s and 5s. The photoelectrochemical activities of bare WO3 and WO3/Au with different Au loading in 0.5 M Na2SO4 with and without addition 0.2 M methanol were studied. The linear scan Voltammetry in three electrode system was employed and the photocurrent generated was presented. The electrode prepared with Au loading shows higher photocurrent compared with WO3 alone. Meanwhile, photocurrent with the addition of methanol in the electrolyte is higher compared to the electrolyte without the addition of methanol. The structural properties were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and the absorption of light was measured using UV-Vis spectrophotometer. It has shown that the structure, thickness, crystallinity, and the band gap of WO3 does not change with Au loading.

AB - Tungsten trioxide (WO3) thin films were prepared on fluorine-doped tin oxide (FTO) substrate by electrodeposition method using peroxotungstic acid with pH 1.3 as the electrolytes. The as-deposited sample was calcined at 350°C. The gold (Au) loading on WO3 films was carried out by using the sputtering method with a different sputtering time of 1s and 5s. The photoelectrochemical activities of bare WO3 and WO3/Au with different Au loading in 0.5 M Na2SO4 with and without addition 0.2 M methanol were studied. The linear scan Voltammetry in three electrode system was employed and the photocurrent generated was presented. The electrode prepared with Au loading shows higher photocurrent compared with WO3 alone. Meanwhile, photocurrent with the addition of methanol in the electrolyte is higher compared to the electrolyte without the addition of methanol. The structural properties were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and the absorption of light was measured using UV-Vis spectrophotometer. It has shown that the structure, thickness, crystallinity, and the band gap of WO3 does not change with Au loading.

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