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Photodegradation of new methylene blue N in aqueous solution using zinc oxide titanium dioxide as catalyst

In this study, ZnO and TiO2 are used as photocatalyst to degrade the dye, New Methylene Blue N. The photodegradation rate was measured using UV-Visible spectrophotometer. New Methylene Blue N showed the absorption values at λ=590 nm and λ=286 nm. UV lamp (λ=354 nm) is used in the photodegradation...

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Main Authors: Ali, Rusmidah, Ooi, Boon Siew
Format: Article
Language:English
Published: Penerbit UTM Press 2006
Subjects:
QD Chemistry
Online Access:http://eprints.utm.my/id/eprint/2491/1/JTJUN42B1.pdf
http://eprints.utm.my/id/eprint/2491/
http://www.penerbit.utm.my/onlinejournal/45/F/JT45F3.pdf
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spelling my.utm.24912017-11-01T04:17:28Z http://eprints.utm.my/id/eprint/2491/ Photodegradation of new methylene blue N in aqueous solution using zinc oxide titanium dioxide as catalyst Ali, Rusmidah Ooi, Boon Siew QD Chemistry In this study, ZnO and TiO2 are used as photocatalyst to degrade the dye, New Methylene Blue N. The photodegradation rate was measured using UV-Visible spectrophotometer. New Methylene Blue N showed the absorption values at λ=590 nm and λ=286 nm. UV lamp (λ=354 nm) is used in the photodegradation process. Results showed that ZnO is a better catalyst compared to TiO2. The degradation by ZnO showed TiO2 gave 81 % at λ=590 nm and 77.75 % at λ=286 nm. In contratst, the degradation for TiO2 was 25.68 % at λ=590 nm and 26.37 % at λ=286 nm. Percent degradation for New Methylene Blue N is 88.89 % and 68.94 % at λ=590 nm and λ=286 nm respectively when H2O2 was added. The mixture of ZnO and TiO2 in the ratio of 85: 15 (0.085 g: 0.015 g) is the most optimum mixture of photocatalyst with the degradation percentage of 96.97 % and 93.61 % at λ=590 nm and λ=286 nm. The addition of Cu2+ metal ion gave the highest percentage of degradation (83.83 % at λ=590 nm) compared to other metal ions. The addition of Pb2+ gave the highest percentage of degradation at λ= 286 nm with 81.25 %. The optimum condition was achieved at pH 5.90, which gave the highest percentage of degradation, 92.84 % and 89.30 % at λ=590 nm and λ=286 nm respectively. Penerbit UTM Press 2006-12 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/2491/1/JTJUN42B1.pdf Ali, Rusmidah and Ooi, Boon Siew (2006) Photodegradation of new methylene blue N in aqueous solution using zinc oxide titanium dioxide as catalyst. Jurnal Teknologi F (45F). pp. 31-42. ISSN 0127-9696 http://www.penerbit.utm.my/onlinejournal/45/F/JT45F3.pdf
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
Ali, Rusmidah
Ooi, Boon Siew
Photodegradation of new methylene blue N in aqueous solution using zinc oxide titanium dioxide as catalyst
description In this study, ZnO and TiO2 are used as photocatalyst to degrade the dye, New Methylene Blue N. The photodegradation rate was measured using UV-Visible spectrophotometer. New Methylene Blue N showed the absorption values at λ=590 nm and λ=286 nm. UV lamp (λ=354 nm) is used in the photodegradation process. Results showed that ZnO is a better catalyst compared to TiO2. The degradation by ZnO showed TiO2 gave 81 % at λ=590 nm and 77.75 % at λ=286 nm. In contratst, the degradation for TiO2 was 25.68 % at λ=590 nm and 26.37 % at λ=286 nm. Percent degradation for New Methylene Blue N is 88.89 % and 68.94 % at λ=590 nm and λ=286 nm respectively when H2O2 was added. The mixture of ZnO and TiO2 in the ratio of 85: 15 (0.085 g: 0.015 g) is the most optimum mixture of photocatalyst with the degradation percentage of 96.97 % and 93.61 % at λ=590 nm and λ=286 nm. The addition of Cu2+ metal ion gave the highest percentage of degradation (83.83 % at λ=590 nm) compared to other metal ions. The addition of Pb2+ gave the highest percentage of degradation at λ= 286 nm with 81.25 %. The optimum condition was achieved at pH 5.90, which gave the highest percentage of degradation, 92.84 % and 89.30 % at λ=590 nm and λ=286 nm respectively.
format Article
author Ali, Rusmidah
Ooi, Boon Siew
author_facet Ali, Rusmidah
Ooi, Boon Siew
author_sort Ali, Rusmidah
title Photodegradation of new methylene blue N in aqueous solution using zinc oxide titanium dioxide as catalyst
title_short Photodegradation of new methylene blue N in aqueous solution using zinc oxide titanium dioxide as catalyst
title_full Photodegradation of new methylene blue N in aqueous solution using zinc oxide titanium dioxide as catalyst
title_fullStr Photodegradation of new methylene blue N in aqueous solution using zinc oxide titanium dioxide as catalyst
title_full_unstemmed Photodegradation of new methylene blue N in aqueous solution using zinc oxide titanium dioxide as catalyst
title_sort photodegradation of new methylene blue n in aqueous solution using zinc oxide titanium dioxide as catalyst
publisher Penerbit UTM Press
publishDate 2006
url http://eprints.utm.my/id/eprint/2491/1/JTJUN42B1.pdf
http://eprints.utm.my/id/eprint/2491/
http://www.penerbit.utm.my/onlinejournal/45/F/JT45F3.pdf
_version_ 1643643592247345152
score 13.211869

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