Photocatalytic degradation of an organic pollutant by zinc oxide – solar process
The photocatalytic degradation of 4-nitrophenol over irradiated ZnO suspensions was investigated in aerated aqueous solution. Complete degradation was achieved after irradiation with solar light, being the reaction rate dependent on the initial pH. The effect of various parameters such as catalyst l...
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doaj-9c2dc57347604886b51007abdb46b8022020-11-24T23:21:33ZengElsevierArabian Journal of Chemistry1878-53522016-11-019S2S1858S186810.1016/j.arabjc.2012.05.006Photocatalytic degradation of an organic pollutant by zinc oxide – solar processD. RajamanickamM. ShanthiThe photocatalytic degradation of 4-nitrophenol over irradiated ZnO suspensions was investigated in aerated aqueous solution. Complete degradation was achieved after irradiation with solar light, being the reaction rate dependent on the initial pH. The effect of various parameters such as catalyst loading, pH and initial concentration of 4-nitrophenol on degradation has been determined. The degradation was strongly enhanced in the presence of electron acceptors such as H2O2, K2S2O8 and KBrO3. The kinetics of heterogeneous photocatalytic degradation is discussed interms of Langmuir–Hinshelwood (L–H) kinetic model. The intermediates formed during the photodegradation were identified by GC–MS analysis. The mineralization of 4-nitrophenol has also been confirmed by COD measurements.http://www.sciencedirect.com/science/article/pii/S1878535212001384Photocatalytic degradation4-NitrophenolSolar-irradiationCatalyst loadingElectron acceptors |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
D. Rajamanickam M. Shanthi |
spellingShingle |
D. Rajamanickam M. Shanthi Photocatalytic degradation of an organic pollutant by zinc oxide – solar process Arabian Journal of Chemistry Photocatalytic degradation 4-Nitrophenol Solar-irradiation Catalyst loading Electron acceptors |
author_facet |
D. Rajamanickam M. Shanthi |
author_sort |
D. Rajamanickam |
title |
Photocatalytic degradation of an organic pollutant by zinc oxide – solar process |
title_short |
Photocatalytic degradation of an organic pollutant by zinc oxide – solar process |
title_full |
Photocatalytic degradation of an organic pollutant by zinc oxide – solar process |
title_fullStr |
Photocatalytic degradation of an organic pollutant by zinc oxide – solar process |
title_full_unstemmed |
Photocatalytic degradation of an organic pollutant by zinc oxide – solar process |
title_sort |
photocatalytic degradation of an organic pollutant by zinc oxide – solar process |
publisher |
Elsevier |
series |
Arabian Journal of Chemistry |
issn |
1878-5352 |
publishDate |
2016-11-01 |
description |
The photocatalytic degradation of 4-nitrophenol over irradiated ZnO suspensions was investigated in aerated aqueous solution. Complete degradation was achieved after irradiation with solar light, being the reaction rate dependent on the initial pH. The effect of various parameters such as catalyst loading, pH and initial concentration of 4-nitrophenol on degradation has been determined. The degradation was strongly enhanced in the presence of electron acceptors such as H2O2, K2S2O8 and KBrO3. The kinetics of heterogeneous photocatalytic degradation is discussed interms of Langmuir–Hinshelwood (L–H) kinetic model. The intermediates formed during the photodegradation were identified by GC–MS analysis. The mineralization of 4-nitrophenol has also been confirmed by COD measurements. |
topic |
Photocatalytic degradation 4-Nitrophenol Solar-irradiation Catalyst loading Electron acceptors |
url |
http://www.sciencedirect.com/science/article/pii/S1878535212001384 |
work_keys_str_mv |
AT drajamanickam photocatalyticdegradationofanorganicpollutantbyzincoxidesolarprocess AT mshanthi photocatalyticdegradationofanorganicpollutantbyzincoxidesolarprocess |
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1725571312199401472 |