Nano Archive

Nanocrystalline ZnO thin film for photocatalytic purification of water

Aal, A. Abdel and Mahmoud, Sawsan A. and Aboul-Gheit, Ahmed K. (2007) Nanocrystalline ZnO thin film for photocatalytic purification of water. Materials Science and Engineering: C, In Press, Corrected Proof . - . (In Press)

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Official URL: http://www.sciencedirect.com/science/article/B6TXG...

Abstract

ZnO thin film was prepared via evaporation of Zn metal on a glass sheet following by calcination (oxidation) process. The influences of calcination parameters such as temperature and time on the surface morphology and phase structure of ZnO films were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. The analysis of XRD patterns indicated that the growth of ZnO nano-structure was controlled by calcination time and temperature. Optimum ZnO nano-fibers can be formed uniformly after 2 h of oxidation at 550 °C. Nanostructured ZnO catalyst exhibited a significantly greater superiority for the photodegradation of 2,4,6-Trichlorophenol (TCP) as a model pollutant in water over photolysis via irradiation with UV of 254 nm wavelength. The role of ZnO catalyst is discussed and the chemical composition of degradation products and intermediates are identified.

Item Type:Article
Uncontrolled Keywords:Trichlorophenol
Subjects:Technology > Nanotechnology and environmental applications
Material Science > Nanostructured materials
ID Code:3993
Deposited By:SPI
Deposited On:31 Mar 2009 10:59
Last Modified:31 Mar 2009 10:59

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