Pembuatan dan pencirian fotoelektrod tungsten trioksida terdop fe dalam medium akueus dengan asid tungstik dan ferosin sebagai bahan permulaan

Translated title of the contribution: Fabrication and characterization of Fe-doped tungsten trioxide photoelectrodes in aqueous medium using tungstic acid and ferrocene as starting materials

Ng Kim Hang, Nurul Akmal Jaafar, Lorna Effery Minggu, Mohammad Kassim

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Different compositions of Fe-doped tungsten trioxide thin films were synthesized on fluorine-doped tin oxide (FTO) glass substrate by sol-gel method, with ferrocene and tungstic acid as starting materials. The synthesized thin films was characterized with X-ray diffraction (XRD), scanning electron microscope (SEM), UV/Vis spectrophotometer and photoelectrochemical (PEC) analysis. The results show that the surface morphology of the thin films became rough and the grain size increased along with the concentration of Fe. Monoclinic structure of tungsten trioxide was obtained for all doped and undoped WO3 and red-shift can be observed from UV-vis spectrum. Band gap reduced from 2.74 eV of undoped WO3 thin films to 2.60 eV of 20% Fe-doped WO3 thin films. Photoactivities of all Fe-doped WO3are higher than undoped thin films. The highest photoactivities contributed by 5% Fe-doped WO3 films with photocurrent densities measured was 0.148 mA/cm2, which is 3 times higher compared to undoped WO3.

Original languageMalay
Pages (from-to)923-930
Number of pages8
JournalMalaysian Journal of Analytical Sciences
Volume20
Issue number4
DOIs
Publication statusPublished - 2016

Fingerprint

Fabrication
Thin films
Ultraviolet spectrophotometers
Fluorine
Photocurrents
Sol-gel process
Surface morphology
tungstic(VI) acid
ferrocene
tungsten oxide
Energy gap
Electron microscopes
Scanning
X ray diffraction
Glass
Substrates
Chemical analysis

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

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title = "Pembuatan dan pencirian fotoelektrod tungsten trioksida terdop fe dalam medium akueus dengan asid tungstik dan ferosin sebagai bahan permulaan",
abstract = "Different compositions of Fe-doped tungsten trioxide thin films were synthesized on fluorine-doped tin oxide (FTO) glass substrate by sol-gel method, with ferrocene and tungstic acid as starting materials. The synthesized thin films was characterized with X-ray diffraction (XRD), scanning electron microscope (SEM), UV/Vis spectrophotometer and photoelectrochemical (PEC) analysis. The results show that the surface morphology of the thin films became rough and the grain size increased along with the concentration of Fe. Monoclinic structure of tungsten trioxide was obtained for all doped and undoped WO3 and red-shift can be observed from UV-vis spectrum. Band gap reduced from 2.74 eV of undoped WO3 thin films to 2.60 eV of 20{\%} Fe-doped WO3 thin films. Photoactivities of all Fe-doped WO3are higher than undoped thin films. The highest photoactivities contributed by 5{\%} Fe-doped WO3 films with photocurrent densities measured was 0.148 mA/cm2, which is 3 times higher compared to undoped WO3.",
keywords = "Direct water splitting, Fe-doped WO, Photoanode, Photoelectrochemical cell",
author = "Hang, {Ng Kim} and Jaafar, {Nurul Akmal} and {Effery Minggu}, Lorna and Mohammad Kassim",
year = "2016",
doi = "10.17576/mjas-2016-2004-28",
language = "Malay",
volume = "20",
pages = "923--930",
journal = "Malaysian Journal of Analytical Sciences",
issn = "1394-2506",
publisher = "Faculty of Science and Technology, Universiti Kebangsaan Malaysia",
number = "4",

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AU - Hang, Ng Kim

AU - Jaafar, Nurul Akmal

AU - Effery Minggu, Lorna

AU - Kassim, Mohammad

PY - 2016

Y1 - 2016

N2 - Different compositions of Fe-doped tungsten trioxide thin films were synthesized on fluorine-doped tin oxide (FTO) glass substrate by sol-gel method, with ferrocene and tungstic acid as starting materials. The synthesized thin films was characterized with X-ray diffraction (XRD), scanning electron microscope (SEM), UV/Vis spectrophotometer and photoelectrochemical (PEC) analysis. The results show that the surface morphology of the thin films became rough and the grain size increased along with the concentration of Fe. Monoclinic structure of tungsten trioxide was obtained for all doped and undoped WO3 and red-shift can be observed from UV-vis spectrum. Band gap reduced from 2.74 eV of undoped WO3 thin films to 2.60 eV of 20% Fe-doped WO3 thin films. Photoactivities of all Fe-doped WO3are higher than undoped thin films. The highest photoactivities contributed by 5% Fe-doped WO3 films with photocurrent densities measured was 0.148 mA/cm2, which is 3 times higher compared to undoped WO3.

AB - Different compositions of Fe-doped tungsten trioxide thin films were synthesized on fluorine-doped tin oxide (FTO) glass substrate by sol-gel method, with ferrocene and tungstic acid as starting materials. The synthesized thin films was characterized with X-ray diffraction (XRD), scanning electron microscope (SEM), UV/Vis spectrophotometer and photoelectrochemical (PEC) analysis. The results show that the surface morphology of the thin films became rough and the grain size increased along with the concentration of Fe. Monoclinic structure of tungsten trioxide was obtained for all doped and undoped WO3 and red-shift can be observed from UV-vis spectrum. Band gap reduced from 2.74 eV of undoped WO3 thin films to 2.60 eV of 20% Fe-doped WO3 thin films. Photoactivities of all Fe-doped WO3are higher than undoped thin films. The highest photoactivities contributed by 5% Fe-doped WO3 films with photocurrent densities measured was 0.148 mA/cm2, which is 3 times higher compared to undoped WO3.

KW - Direct water splitting

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KW - Photoanode

KW - Photoelectrochemical cell

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