Nanocrystalline ZnO thin film for photocatalytic purification of water

被引：39

作者：

Aal, A. Abdel ^{[1
]}

Mahmoud, Sawsan A. ^{[2
]}

Aboul-Gheit, Ahmed K. ^{[2
]}

机构：

[1] CMRDI, Surface Protect & Corros Control Lab, Cairo, Egypt

[2] Petr Res Inst, Proc Dev Dept, Cairo 11787, Egypt

来源：

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS | 2009年 / 29卷 / 03期

关键词：

Nanomaterials; Zinc oxide; Thin films; Thermal evaporation; Photolysis; photocatalysis; Trichlorophenol; DEGRADATION; TIO2; PHOTOREACTOR; PROGRESS; GALLIUM; LIGHT; ZINC;

D O I：

10.1016/j.msec.2008.07.035

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 degrees 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. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：831 / 835

页数：5

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