The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.]

Pure Ti0₂ and Cr doped Ti0₂ (0.1-1.0wt% Cr) nanoparticles were synthesized via sol gel method. This study focuses on narrowing the Ti0₂ band gap energies in order to enhance the photocatalytic efficiency under visible light. The synthesized samples were characterized by X-Ray diffraction method (XRD...

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Main Authors:	Suhaili, Siti Zulaikha, Yaakob, Muhamad Kamil, Saaid, Siti Irma Yuana, Jais, Umi Sarah
Format:	Article
Language:	English
Published:	Penerbit UiTM (UiTM Press) 2016
Subjects:	Environmental pollution
Online Access:	http://ir.uitm.edu.my/id/eprint/16135/ http://ir.uitm.edu.my/id/eprint/16135/1/AJ_SITI%20ZULAIKHA%20SUHAILI%20SRJ%2016.pdf

id	uitm-16135
recordtype	eprints
spelling	uitm-161352017-02-16T07:02:00Z http://ir.uitm.edu.my/id/eprint/16135/ The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.] Suhaili, Siti Zulaikha Yaakob, Muhamad Kamil Saaid, Siti Irma Yuana Jais, Umi Sarah Environmental pollution Pure Ti0₂ and Cr doped Ti0₂ (0.1-1.0wt% Cr) nanoparticles were synthesized via sol gel method. This study focuses on narrowing the Ti0₂ band gap energies in order to enhance the photocatalytic efficiency under visible light. The synthesized samples were characterized by X-Ray diffraction method (XRD), field emmision (FESEM) and also UV-Vis diffuse reflectance spectroscopy (DRS).The photocatalytic activity under sunlight irradiation was demonstrated by photocatalytic decomposition of methylene blue in water using UV/Vis spectrophotometer. The XRD analysis of pure Ti0₂ and doped Ti0₂ calcined at 500°C showed a mixture of anatase and rutile phases with decreasing crystallites size from 13.3nm to 11.6nm as the concentration of Cr was increased. The anatase-rutile phase transformation increased from 28.8% to 57.4%. An indication shows that at 0.75wt%, Cr the anatase and rutile phases have equal composition percentage. This study demonstrated that band gap energy of Ti0₂ was reduced with Cr doping which could enhance the photocatalytic efficiency. Sample containing 1.0wt% exhibit the lowest optical band gap energy at 2.86 eV. The optimum chromium doping concentration was found to be at 0.1 wt% Cr corresponding to band gap energy of 2.87 eV and degradation rate of 84%. Penerbit UiTM (UiTM Press) 2016 Article PeerReviewed text en http://ir.uitm.edu.my/id/eprint/16135/1/AJ_SITI%20ZULAIKHA%20SUHAILI%20SRJ%2016.pdf Suhaili, Siti Zulaikha and Yaakob, Muhamad Kamil and Saaid, Siti Irma Yuana and Jais, Umi Sarah (2016) The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.]. Scientific Research Journal, 13 (1). pp. 100-114. ISSN 1675-7009
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Environmental pollution
spellingShingle	Environmental pollution Suhaili, Siti Zulaikha Yaakob, Muhamad Kamil Saaid, Siti Irma Yuana Jais, Umi Sarah The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.]
description	Pure Ti0₂ and Cr doped Ti0₂ (0.1-1.0wt% Cr) nanoparticles were synthesized via sol gel method. This study focuses on narrowing the Ti0₂ band gap energies in order to enhance the photocatalytic efficiency under visible light. The synthesized samples were characterized by X-Ray diffraction method (XRD), field emmision (FESEM) and also UV-Vis diffuse reflectance spectroscopy (DRS).The photocatalytic activity under sunlight irradiation was demonstrated by photocatalytic decomposition of methylene blue in water using UV/Vis spectrophotometer. The XRD analysis of pure Ti0₂ and doped Ti0₂ calcined at 500°C showed a mixture of anatase and rutile phases with decreasing crystallites size from 13.3nm to 11.6nm as the concentration of Cr was increased. The anatase-rutile phase transformation increased from 28.8% to 57.4%. An indication shows that at 0.75wt%, Cr the anatase and rutile phases have equal composition percentage. This study demonstrated that band gap energy of Ti0₂ was reduced with Cr doping which could enhance the photocatalytic efficiency. Sample containing 1.0wt% exhibit the lowest optical band gap energy at 2.86 eV. The optimum chromium doping concentration was found to be at 0.1 wt% Cr corresponding to band gap energy of 2.87 eV and degradation rate of 84%.
format	Article
author	Suhaili, Siti Zulaikha Yaakob, Muhamad Kamil Saaid, Siti Irma Yuana Jais, Umi Sarah
author_facet	Suhaili, Siti Zulaikha Yaakob, Muhamad Kamil Saaid, Siti Irma Yuana Jais, Umi Sarah
author_sort	Suhaili, Siti Zulaikha
title	The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.]
title_short	The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.]
title_full	The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.]
title_fullStr	The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.]
title_full_unstemmed	The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.]
title_sort	influence of cr doped tio² on the optical property and photocatalytic activity under sunlight irradiation / siti zulaikha suhaili … [et al.]
publisher	Penerbit UiTM (UiTM Press)
publishDate	2016
url	http://ir.uitm.edu.my/id/eprint/16135/ http://ir.uitm.edu.my/id/eprint/16135/1/AJ_SITI%20ZULAIKHA%20SUHAILI%20SRJ%2016.pdf
first_indexed	2023-09-18T22:55:24Z
last_indexed	2023-09-18T22:55:24Z
_version_	1777417819615395840

The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.]

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