TiO2 di dop bersama Fe2O3 untuk elektrod pembelahan molekul air secara fotoelektrokimia: Eksperimen dan kajian teori fungsi ketumpatan

Translated title of the contribution: TiO2 doped with Fe2O3 for photoelectrochemical water splitting electrode: Experimental and density functional theory study

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1 Citation (Scopus)

Abstract

Various modifications of the titanium dioxide thin films have been done in fulfilling the photoelectrode requirements for photoelectrochemical water splitting reaction. In this study, surface passivation of TiO2 by hematite-Fe2O3 was reported. Electrodeposition technique was used to deposit the Fe2O3 onto the TiO2/FTO film with variation of time. X-ray diffraction (XRD), Scanning Electron Microscope (SEM) and UV-Vis spectroscopic analyses were used to characterize the electrode. Plane-wave-based pseudopotential density functional theory (DFT) calculations were used to analyze the electronic structure and charge potential at the surface of the electrode. The photocurrent measurement showed that current density of TiO2/Fe2O3 electrode was higher than the TiO2/FTO under the same illumination intensity of 100 mWcm-2. The highest current density was produced by 5 minutes electrodeposition of Fe2O3, which also shifted the absorption to visible region at the threshold wavelength of 518 nm.

Original languageMalay
Pages (from-to)892-900
Number of pages9
JournalMalaysian Journal of Analytical Sciences
Volume20
Issue number4
DOIs
Publication statusPublished - 2016

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Density functional theory
Electrodeposition
Electrodes
Water
Current density
Photocurrents
Passivation
Electronic structure
Electron microscopes
Deposits
Lighting
Scanning
X ray diffraction
Thin films
Wavelength
titanium dioxide
ferric oxide

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

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title = "TiO2 di dop bersama Fe2O3 untuk elektrod pembelahan molekul air secara fotoelektrokimia: Eksperimen dan kajian teori fungsi ketumpatan",
abstract = "Various modifications of the titanium dioxide thin films have been done in fulfilling the photoelectrode requirements for photoelectrochemical water splitting reaction. In this study, surface passivation of TiO2 by hematite-Fe2O3 was reported. Electrodeposition technique was used to deposit the Fe2O3 onto the TiO2/FTO film with variation of time. X-ray diffraction (XRD), Scanning Electron Microscope (SEM) and UV-Vis spectroscopic analyses were used to characterize the electrode. Plane-wave-based pseudopotential density functional theory (DFT) calculations were used to analyze the electronic structure and charge potential at the surface of the electrode. The photocurrent measurement showed that current density of TiO2/Fe2O3 electrode was higher than the TiO2/FTO under the same illumination intensity of 100 mWcm-2. The highest current density was produced by 5 minutes electrodeposition of Fe2O3, which also shifted the absorption to visible region at the threshold wavelength of 518 nm.",
keywords = "Band gap, Iron(III) oxide, Passivation layer, Titanium dioxide",
author = "Khuzaimah Arifin and Kadir, {Hasmida Abdul} and Minggu, {Lorna Jeffery} and Daud, {Wan Ramli Wan} and Kassim, {Mohammad B.}",
year = "2016",
doi = "10.17576/mjas-2016-2004-25",
language = "Malay",
volume = "20",
pages = "892--900",
journal = "Malaysian Journal of Analytical Sciences",
issn = "1394-2506",
publisher = "Faculty of Science and Technology, Universiti Kebangsaan Malaysia",
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T1 - TiO2 di dop bersama Fe2O3 untuk elektrod pembelahan molekul air secara fotoelektrokimia

T2 - Eksperimen dan kajian teori fungsi ketumpatan

AU - Arifin, Khuzaimah

AU - Kadir, Hasmida Abdul

AU - Minggu, Lorna Jeffery

AU - Daud, Wan Ramli Wan

AU - Kassim, Mohammad B.

PY - 2016

Y1 - 2016

N2 - Various modifications of the titanium dioxide thin films have been done in fulfilling the photoelectrode requirements for photoelectrochemical water splitting reaction. In this study, surface passivation of TiO2 by hematite-Fe2O3 was reported. Electrodeposition technique was used to deposit the Fe2O3 onto the TiO2/FTO film with variation of time. X-ray diffraction (XRD), Scanning Electron Microscope (SEM) and UV-Vis spectroscopic analyses were used to characterize the electrode. Plane-wave-based pseudopotential density functional theory (DFT) calculations were used to analyze the electronic structure and charge potential at the surface of the electrode. The photocurrent measurement showed that current density of TiO2/Fe2O3 electrode was higher than the TiO2/FTO under the same illumination intensity of 100 mWcm-2. The highest current density was produced by 5 minutes electrodeposition of Fe2O3, which also shifted the absorption to visible region at the threshold wavelength of 518 nm.

AB - Various modifications of the titanium dioxide thin films have been done in fulfilling the photoelectrode requirements for photoelectrochemical water splitting reaction. In this study, surface passivation of TiO2 by hematite-Fe2O3 was reported. Electrodeposition technique was used to deposit the Fe2O3 onto the TiO2/FTO film with variation of time. X-ray diffraction (XRD), Scanning Electron Microscope (SEM) and UV-Vis spectroscopic analyses were used to characterize the electrode. Plane-wave-based pseudopotential density functional theory (DFT) calculations were used to analyze the electronic structure and charge potential at the surface of the electrode. The photocurrent measurement showed that current density of TiO2/Fe2O3 electrode was higher than the TiO2/FTO under the same illumination intensity of 100 mWcm-2. The highest current density was produced by 5 minutes electrodeposition of Fe2O3, which also shifted the absorption to visible region at the threshold wavelength of 518 nm.

KW - Band gap

KW - Iron(III) oxide

KW - Passivation layer

KW - Titanium dioxide

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