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Effect of transition metal oxide doping (Cr, Co, V) in the photocatalytic activity of TiO2 for congo red degradation under visible light

Comparative study of Cr, Co or V-doped TiO2 was carried out. The photocatalysts were synthesized via sol-gel method. The results indicated that the dopants of Cr, Co, and V induced anatase to rutile phase transition of TiO2 at different dopant amounts of 1, 4, 2 mol%, respectively. Besides that, the...

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Main Authors: Koh, Pei Wen, Yuliati, Leny, Lee, Siew Ling
Format: Article
Language:English
Published: Penerbit UTM 2014
Subjects:
Q Science
Online Access:http://eprints.utm.my/id/eprint/52579/1/PeiWenKoh2014_Effectoftransitionmetal.pdf
http://eprints.utm.my/id/eprint/52579/
https://dx.doi.org/10.11113/jt.v69.3203
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spelling my.utm.525792018-09-19T05:09:44Z http://eprints.utm.my/id/eprint/52579/ Effect of transition metal oxide doping (Cr, Co, V) in the photocatalytic activity of TiO2 for congo red degradation under visible light Koh, Pei Wen Yuliati, Leny Lee, Siew Ling Q Science Comparative study of Cr, Co or V-doped TiO2 was carried out. The photocatalysts were synthesized via sol-gel method. The results indicated that the dopants of Cr, Co, and V induced anatase to rutile phase transition of TiO2 at different dopant amounts of 1, 4, 2 mol%, respectively. Besides that, the existence of dopant extended the absorption wavelength of TiO2 to visible light region, thus making it a visible-driven photocatalyst. The doped transition metal exhibited different oxidation states on the TiO2 surface. The prepared photocatalysts were tested over photodegradation of Congo Red. Amongst all, Cr-doped TiO2 (3 mol%) was the best photocatalyst attributed to the presence of 45% rutile phase, reduced band gap energy of 2.30 eV and formation of Cr6+, which acted as an electron scavenger to delay the hole-electron recombination Penerbit UTM 2014 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/52579/1/PeiWenKoh2014_Effectoftransitionmetal.pdf Koh, Pei Wen and Yuliati, Leny and Lee, Siew Ling (2014) Effect of transition metal oxide doping (Cr, Co, V) in the photocatalytic activity of TiO2 for congo red degradation under visible light. Jurnal Teknologi (Sciences and Engineering), 69 (5). pp. 45-50. ISSN 0127-9696 https://dx.doi.org/10.11113/jt.v69.3203 DOI: 10.11113/jt.v69.3203
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic Q Science
spellingShingle Q Science
Koh, Pei Wen
Yuliati, Leny
Lee, Siew Ling
Effect of transition metal oxide doping (Cr, Co, V) in the photocatalytic activity of TiO2 for congo red degradation under visible light
description Comparative study of Cr, Co or V-doped TiO2 was carried out. The photocatalysts were synthesized via sol-gel method. The results indicated that the dopants of Cr, Co, and V induced anatase to rutile phase transition of TiO2 at different dopant amounts of 1, 4, 2 mol%, respectively. Besides that, the existence of dopant extended the absorption wavelength of TiO2 to visible light region, thus making it a visible-driven photocatalyst. The doped transition metal exhibited different oxidation states on the TiO2 surface. The prepared photocatalysts were tested over photodegradation of Congo Red. Amongst all, Cr-doped TiO2 (3 mol%) was the best photocatalyst attributed to the presence of 45% rutile phase, reduced band gap energy of 2.30 eV and formation of Cr6+, which acted as an electron scavenger to delay the hole-electron recombination
format Article
author Koh, Pei Wen
Yuliati, Leny
Lee, Siew Ling
author_facet Koh, Pei Wen
Yuliati, Leny
Lee, Siew Ling
author_sort Koh, Pei Wen
title Effect of transition metal oxide doping (Cr, Co, V) in the photocatalytic activity of TiO2 for congo red degradation under visible light
title_short Effect of transition metal oxide doping (Cr, Co, V) in the photocatalytic activity of TiO2 for congo red degradation under visible light
title_full Effect of transition metal oxide doping (Cr, Co, V) in the photocatalytic activity of TiO2 for congo red degradation under visible light
title_fullStr Effect of transition metal oxide doping (Cr, Co, V) in the photocatalytic activity of TiO2 for congo red degradation under visible light
title_full_unstemmed Effect of transition metal oxide doping (Cr, Co, V) in the photocatalytic activity of TiO2 for congo red degradation under visible light
title_sort effect of transition metal oxide doping (cr, co, v) in the photocatalytic activity of tio2 for congo red degradation under visible light
publisher Penerbit UTM
publishDate 2014
url http://eprints.utm.my/id/eprint/52579/1/PeiWenKoh2014_Effectoftransitionmetal.pdf
http://eprints.utm.my/id/eprint/52579/
https://dx.doi.org/10.11113/jt.v69.3203
_version_ 1643653201789976576
score 13.211869

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