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Chiang Mai Journal of Science, Faculty of Science, Chiang Mai University
 


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Photocatalytic Degradation of Aromatic Pollutants in Aqueous Solution over TiO2 Catalyst


Paper Type 
Contributed Paper
Title 
Photocatalytic Degradation of Aromatic Pollutants in Aqueous Solution over TiO2 Catalyst
Author 
Chonlada Theerakarunwong and Sukon Phanichphant
Email 
chonlada.dechakiatkrai@gmail.com
Abstract:

 The photocatalytic degradation of two organic aromatic compounds; benzene and toluene, as environmental decontamination by using TiO2 photocatalyst under UV irradiation was studied. It was noted that anatase TiO2 nanoparticles had crystalline structure and spherical particles morphology. The average size was about 20 nm with the specific surface area of 

83 m2/g. The photocatalytic performance of these TiO2 catalysts was found that the percent removal depended on the dose of TiO2 and H2O2. The 3 wt% TiO2 displayed highest photominerizer since TiO2 particles generating electron-hole pairs both at the surface and within the TiO2 semiconductor itself and interacted with the organic molecules. The degradation of benzene and toluene increased along with increasing H2O2 due to the precence of H2O2 promotes the hydroxyl radicals. The photocatalyst removed 80% benzene and toluene within 60 min after UV irradiation more than the commercial P25 powder. In addition, the photocatalytic degradation of those compounds followed the pseudo-first-order kinetic. 
Start & End Page 
939 - 945
Received Date 
2013-05-26
Revised Date 
Accepted Date 
2015-02-02
Full Text 
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Keyword 
photocatalytic, TiO2, benzene, toluene
Volume 
Vol.42 No.4 (OCTOBER 2015)
DOI 
Citation 
Theerakarunwong C. and Phanichphant S., Photocatalytic Degradation of Aromatic Pollutants in Aqueous Solution over TiO2 Catalyst, Chiang Mai Journal of Science, 2015; 42(4): 939-945.
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