Kesan penggunaan kulit buah naga sebagai pemeka-pewarna dan molekul pewarna di dalam elektrolit bagi tindak balas fotoelektrokimia

Translated title of the contribution: Effect of using pitaya peel as dye-sensitizer and dye molecules in electrolyte for photoelectrochemical reaction

Siti Nur Hidayah Jaafar, Lorna Effery Minggu, Arifin Khuzaimah, Mohammad B. Kasssim, Wan Ramli Wan Daud

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Natural dye sensitizer in photoelectrochemical shows a great potential in improving the efficiency of metal oxide semiconductor especially Titanium dioxide (TiO2) due to its prominent in absorbing visible light and also low cost. In this work, the effect of using pitaya peel as natural dye sensitizes to TiO2 has been studied through characterizations analysis and PEC test. The bare TiO2 thin films were fabricated on Fluorine-doped tin oxide (FTO) glass substrate by doctor blade method meanwhile dye-sensitized TiO2 thin films prepared by immersion of TiO2 in the dye extracts. The fabricated thin films were characterized with Scanning Electron Microscopy (SEM), X-ray difractometer (XRD), UV-Vis spectrophotometer and photoelectrochemical analysis. The surface of TiO2 was porous and uniform meanwhile dye particles could not been observed due to very small size. The energy band gap of dye-sensitized TiO2 from the UV-Vis spectrum is 2.1 eV which is smaller than bare TiO2 (3.7 eV). Meanwhile, photoactivities of dye-sensitized TiO2 has the highest compared to bare TiO2 photoelectrodes which is 127μA/cm2 in 6.25% v/v of pitaya dye in the electrolyte.

Original languageMalay
Pages (from-to)651-659
Number of pages9
JournalMalaysian Journal of Analytical Sciences
Volume20
Issue number3
DOIs
Publication statusPublished - 2016

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Electrolytes
Coloring Agents
Molecules
Thin films
Ultraviolet spectrophotometers
Fluorine
Band structure
Energy gap
Metals
X rays
Glass
Scanning electron microscopy
Substrates
Costs

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

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title = "Kesan penggunaan kulit buah naga sebagai pemeka-pewarna dan molekul pewarna di dalam elektrolit bagi tindak balas fotoelektrokimia",
abstract = "Natural dye sensitizer in photoelectrochemical shows a great potential in improving the efficiency of metal oxide semiconductor especially Titanium dioxide (TiO2) due to its prominent in absorbing visible light and also low cost. In this work, the effect of using pitaya peel as natural dye sensitizes to TiO2 has been studied through characterizations analysis and PEC test. The bare TiO2 thin films were fabricated on Fluorine-doped tin oxide (FTO) glass substrate by doctor blade method meanwhile dye-sensitized TiO2 thin films prepared by immersion of TiO2 in the dye extracts. The fabricated thin films were characterized with Scanning Electron Microscopy (SEM), X-ray difractometer (XRD), UV-Vis spectrophotometer and photoelectrochemical analysis. The surface of TiO2 was porous and uniform meanwhile dye particles could not been observed due to very small size. The energy band gap of dye-sensitized TiO2 from the UV-Vis spectrum is 2.1 eV which is smaller than bare TiO2 (3.7 eV). Meanwhile, photoactivities of dye-sensitized TiO2 has the highest compared to bare TiO2 photoelectrodes which is 127μA/cm2 in 6.25{\%} v/v of pitaya dye in the electrolyte.",
keywords = "Betalains, Dye-sensitizers, Photoelectrochemical cell, Titanium dioxide, Water splitting",
author = "Jaafar, {Siti Nur Hidayah} and {Effery Minggu}, Lorna and Arifin Khuzaimah and Kasssim, {Mohammad B.} and {Wan Daud}, {Wan Ramli}",
year = "2016",
doi = "10.17576/mjas-2016-2003-26",
language = "Malay",
volume = "20",
pages = "651--659",
journal = "Malaysian Journal of Analytical Sciences",
issn = "1394-2506",
publisher = "Faculty of Science and Technology, Universiti Kebangsaan Malaysia",
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TY - JOUR

T1 - Kesan penggunaan kulit buah naga sebagai pemeka-pewarna dan molekul pewarna di dalam elektrolit bagi tindak balas fotoelektrokimia

AU - Jaafar, Siti Nur Hidayah

AU - Effery Minggu, Lorna

AU - Khuzaimah, Arifin

AU - Kasssim, Mohammad B.

AU - Wan Daud, Wan Ramli

PY - 2016

Y1 - 2016

N2 - Natural dye sensitizer in photoelectrochemical shows a great potential in improving the efficiency of metal oxide semiconductor especially Titanium dioxide (TiO2) due to its prominent in absorbing visible light and also low cost. In this work, the effect of using pitaya peel as natural dye sensitizes to TiO2 has been studied through characterizations analysis and PEC test. The bare TiO2 thin films were fabricated on Fluorine-doped tin oxide (FTO) glass substrate by doctor blade method meanwhile dye-sensitized TiO2 thin films prepared by immersion of TiO2 in the dye extracts. The fabricated thin films were characterized with Scanning Electron Microscopy (SEM), X-ray difractometer (XRD), UV-Vis spectrophotometer and photoelectrochemical analysis. The surface of TiO2 was porous and uniform meanwhile dye particles could not been observed due to very small size. The energy band gap of dye-sensitized TiO2 from the UV-Vis spectrum is 2.1 eV which is smaller than bare TiO2 (3.7 eV). Meanwhile, photoactivities of dye-sensitized TiO2 has the highest compared to bare TiO2 photoelectrodes which is 127μA/cm2 in 6.25% v/v of pitaya dye in the electrolyte.

AB - Natural dye sensitizer in photoelectrochemical shows a great potential in improving the efficiency of metal oxide semiconductor especially Titanium dioxide (TiO2) due to its prominent in absorbing visible light and also low cost. In this work, the effect of using pitaya peel as natural dye sensitizes to TiO2 has been studied through characterizations analysis and PEC test. The bare TiO2 thin films were fabricated on Fluorine-doped tin oxide (FTO) glass substrate by doctor blade method meanwhile dye-sensitized TiO2 thin films prepared by immersion of TiO2 in the dye extracts. The fabricated thin films were characterized with Scanning Electron Microscopy (SEM), X-ray difractometer (XRD), UV-Vis spectrophotometer and photoelectrochemical analysis. The surface of TiO2 was porous and uniform meanwhile dye particles could not been observed due to very small size. The energy band gap of dye-sensitized TiO2 from the UV-Vis spectrum is 2.1 eV which is smaller than bare TiO2 (3.7 eV). Meanwhile, photoactivities of dye-sensitized TiO2 has the highest compared to bare TiO2 photoelectrodes which is 127μA/cm2 in 6.25% v/v of pitaya dye in the electrolyte.

KW - Betalains

KW - Dye-sensitizers

KW - Photoelectrochemical cell

KW - Titanium dioxide

KW - Water splitting

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