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Degradation of methyl orange mediated by CuO-doped ZnO phoycatalysts.


Razali, Nor Zafirah and Abdullah, Abdul Halim and Haron, Md. Jelas (2011) Degradation of methyl orange mediated by CuO-doped ZnO phoycatalysts. Environmental Engineering and Management Journal, 10 (10). pp. 1523-1528. ISSN 1582-9596


0.5 - 2.0% CuO-doped ZnO (CuO-ZnO) photocatalysts were prepared with a simple mixing method where the oxides were initially synthesized through precipitation. The physico-chemical properties of CuO-doped ZnO photocatalysts were studied via XRD, TEM, XRF and BET method and their photoactivity was evaluated by degrading methyl orange (MO) dye. The properties of ZnO were not affected by the addition of CuO except for the particle size of the photocatalyst, which increased proportionally with CuO. In a photoactivity study, 1.0% CuO-ZnO photocatalyst has the highest degradation rate with the optimum mass loading of 1.5 g L-1. Increasing the initial concentration of MO reduced photocatalysts' photoactivity. The degradation of MO followed the pseudo-first order reaction. The photoactivity of CuO-ZnO was maintained until the fifth cycle, which indicates that it is a very stable compound.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institute of Advanced Technology
Keywords: Copper oxide; Degradation; Methyl orange; Photocatalyst; Zinc oxide.
Depositing User: Nur Farahin Ramli
Date Deposited: 16 Jul 2013 04:40
Last Modified: 30 Oct 2015 08:29
URI: http://psasir.upm.edu.my/id/eprint/25182
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