Photodegradation of m-cresol by Zinc Oxide under Visible-light Irradiation
The photodegradation of m-cresol was carried out under visible light (46% sunlight) by ZnO as photocatalyst. To measure the efficiency of photodegradation, the different variables studied included amount of photocatalyst, concentration of m-cresol and pH. The maximum amount of photocatalyst and conc...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Canadian Center of Science and Education
2011
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| Online Access: | http://psasir.upm.edu.my/id/eprint/18776/1/Photodegradation%20of%20m-cresol.pdf http://psasir.upm.edu.my/id/eprint/18776/ http://ccsenet.org/journal/index.php/ijc/article/view/10581 |
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| Summary: | The photodegradation of m-cresol was carried out under visible light (46% sunlight) by ZnO as photocatalyst. To measure the efficiency of photodegradation, the different variables studied included amount of photocatalyst, concentration of m-cresol and pH. The maximum amount of photocatalyst and concentration of m-cresol was 1.5 g/L and 25 ppm respectively. The photodegradation was favorable in the pH 6-9 range. The detected intermediates were 2-methyl-1,4-benzodiol, 2-methyl-para-benzoquinone, 3,5-dihydroxytoluene and 2,5-dihydroxy-benzaldehyde. TOC studies show that 78% of total organic carbon is removed from solution during irradiation time. This study indicates the great potential of ZnO to remove aqueous m-cresol under visible-light irradiation which is part of sunlight. |
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