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Cobalt oxide-modified titanium dioxide nanoparticle photocatalyst for degradation of 2,4-dichlorophenoxyacetic acid

2,4-dichlorophenoxyacetic acid (2,4-D) has been recognized as a possibly carcinogenic compound to human, therefore, 2,4-D should be treated before it is discharged to the environment. Photocatalytic degradation of 2,4-D has been proposed as one of the best methods that offer environmentally safe pro...

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Main Authors: Yuliati, L., Roslan, N. A., Siah, W. R., Lintang, H. O.
Format: Article
Language:English
Published: Gadjah Mada University 2017
Subjects:
QD Chemistry
Online Access:http://eprints.utm.my/id/eprint/74926/1/NurAzminaRoslan_CobaltOxide-ModifiedTitaniumDioxide.pdf
http://eprints.utm.my/id/eprint/74926/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85026655977&doi=10.22146%2fijc.22624&partnerID=40&md5=a154fe12d7557a580f168bae4fc2d97c
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spelling my.utm.749262018-03-22T11:02:38Z http://eprints.utm.my/id/eprint/74926/ Cobalt oxide-modified titanium dioxide nanoparticle photocatalyst for degradation of 2,4-dichlorophenoxyacetic acid Yuliati, L. Roslan, N. A. Siah, W. R. Lintang, H. O. QD Chemistry 2,4-dichlorophenoxyacetic acid (2,4-D) has been recognized as a possibly carcinogenic compound to human, therefore, 2,4-D should be treated before it is discharged to the environment. Photocatalytic degradation of 2,4-D has been proposed as one of the best methods that offer environmentally safe process. In the present research, titanium dioxide (TiO2) was modified with cobalt oxide (CoO) and tested for photocatalytic degradation of 2,4-D under UV light irradiation. Different amounts of CoO (0.1, 0.5, 1 and 5 mol%) were added onto TiO2 by an impregnation method. The photocatalytic reaction was monitored and analyzed by measurement of 2,4-D absorbance using UV spectrophotometer. After 1 h photocatalytic reaction, it was confirmed that the sample with low loading of 0.1 mol% gave the highest photocatalytic activity among the bare and modified TiO2 photocatalysts. The photocatalytic activity was decreased with the increase of CoO loading, suggesting that the optimum amount of CoO was an important factor to improve the performance of TiO2. Based on fluorescence spectroscopy, such addition of CoO resulted in the reduced emission intensity, which showed the successful decrease in the electron-hole recombination. Gadjah Mada University 2017 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/74926/1/NurAzminaRoslan_CobaltOxide-ModifiedTitaniumDioxide.pdf Yuliati, L. and Roslan, N. A. and Siah, W. R. and Lintang, H. O. (2017) Cobalt oxide-modified titanium dioxide nanoparticle photocatalyst for degradation of 2,4-dichlorophenoxyacetic acid. Indonesian Journal of Chemistry, 17 (2). pp. 284-290. ISSN 1411-9420 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85026655977&doi=10.22146%2fijc.22624&partnerID=40&md5=a154fe12d7557a580f168bae4fc2d97c
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 QD Chemistry
spellingShingle QD Chemistry
Yuliati, L.
Roslan, N. A.
Siah, W. R.
Lintang, H. O.
Cobalt oxide-modified titanium dioxide nanoparticle photocatalyst for degradation of 2,4-dichlorophenoxyacetic acid
description 2,4-dichlorophenoxyacetic acid (2,4-D) has been recognized as a possibly carcinogenic compound to human, therefore, 2,4-D should be treated before it is discharged to the environment. Photocatalytic degradation of 2,4-D has been proposed as one of the best methods that offer environmentally safe process. In the present research, titanium dioxide (TiO2) was modified with cobalt oxide (CoO) and tested for photocatalytic degradation of 2,4-D under UV light irradiation. Different amounts of CoO (0.1, 0.5, 1 and 5 mol%) were added onto TiO2 by an impregnation method. The photocatalytic reaction was monitored and analyzed by measurement of 2,4-D absorbance using UV spectrophotometer. After 1 h photocatalytic reaction, it was confirmed that the sample with low loading of 0.1 mol% gave the highest photocatalytic activity among the bare and modified TiO2 photocatalysts. The photocatalytic activity was decreased with the increase of CoO loading, suggesting that the optimum amount of CoO was an important factor to improve the performance of TiO2. Based on fluorescence spectroscopy, such addition of CoO resulted in the reduced emission intensity, which showed the successful decrease in the electron-hole recombination.
format Article
author Yuliati, L.
Roslan, N. A.
Siah, W. R.
Lintang, H. O.
author_facet Yuliati, L.
Roslan, N. A.
Siah, W. R.
Lintang, H. O.
author_sort Yuliati, L.
title Cobalt oxide-modified titanium dioxide nanoparticle photocatalyst for degradation of 2,4-dichlorophenoxyacetic acid
title_short Cobalt oxide-modified titanium dioxide nanoparticle photocatalyst for degradation of 2,4-dichlorophenoxyacetic acid
title_full Cobalt oxide-modified titanium dioxide nanoparticle photocatalyst for degradation of 2,4-dichlorophenoxyacetic acid
title_fullStr Cobalt oxide-modified titanium dioxide nanoparticle photocatalyst for degradation of 2,4-dichlorophenoxyacetic acid
title_full_unstemmed Cobalt oxide-modified titanium dioxide nanoparticle photocatalyst for degradation of 2,4-dichlorophenoxyacetic acid
title_sort cobalt oxide-modified titanium dioxide nanoparticle photocatalyst for degradation of 2,4-dichlorophenoxyacetic acid
publisher Gadjah Mada University
publishDate 2017
url http://eprints.utm.my/id/eprint/74926/1/NurAzminaRoslan_CobaltOxide-ModifiedTitaniumDioxide.pdf
http://eprints.utm.my/id/eprint/74926/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85026655977&doi=10.22146%2fijc.22624&partnerID=40&md5=a154fe12d7557a580f168bae4fc2d97c
_version_ 1643656973724418048
score 13.211869

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