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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/16135/1/AJ_SITI%20ZULAIKHA%20SUHAILI%20SRJ%2016.pdf
http://ir.uitm.edu.my/id/eprint/16135/
https://srj.uitm.edu.my/
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spelling my.uitm.ir.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 https://srj.uitm.edu.my/
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
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/16135/1/AJ_SITI%20ZULAIKHA%20SUHAILI%20SRJ%2016.pdf
http://ir.uitm.edu.my/id/eprint/16135/
https://srj.uitm.edu.my/
_version_ 1685648758853861376
score 13.211869

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