Reviste: » Environmental Engineering and Management Journal» European Journal of Science and Theology» Sănătate Sport și Nutriție
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Studies on titanium oxide catalyst doped with heavy metals (cadmium, copper and nickel) Autori: Luminita Andronic, Bianca Hristache, Alexandru Enesca, Anca Duta, Maria VisaData aparitiei: July/August 2009 Revista: Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 ISSN: 1843 - 3707 Format PDF Abstract
In order to improve the photo-efficiency of the electronic process as well as the response into the visible part of the spectrum, TiO2 doping with heavy metal (cadmium, cooper and nickel) have been employed. The objectives of this work are: (a) to prepare doped Me(Cd, Cu, Ni) TiO2 by doctor blade (DB) and spray pyrolysis deposition (SPD) techniques, (b) to characterize the catalysts, (c) to study and compare the activity of the Cd-TiO2, Cu-TiO2 and Ni-TiO2 catalysts on methyl orange (MO) photodegradation using these novel substrates. The phase structure, microstructure and surface properties of the films were characterized by using X-ray diffraction (XRD) and atomic force microscopy (AFM). The samples Me-TiO2-DB presents a higher photocatalytic degradation efficiency of MO than Me-TiO2-SPD, but the SPD is a low cost deposition technique for large area thin films and is economically more attractive than doctor blade.
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