Synthesis and photocatalytic activity of ZnO/TiO₂ nanoparticle
by R. Parimaladevi; K. Sumathi
International Journal of Materials Engineering Innovation (IJMATEI), Vol. 5, No. 3, 2014

Abstract: ZnO/TiO₂ photocatalysts were synthesised via wet-chemical techniques. These can subsequently be used as efficient photocatalysts which can effectively degrade organic contaminants. Photocatalysts prepared with these techniques were characterised with X-ray diffraction (XRD), infrared (FTIR) spectrophotometer, UV-visible spectroscopy and photo luminescence. XRD confirmed the formation of ZnO/TiO₂ nanoparticle. UV-visible spectroscopy showed significant difference in the optical absorption. Enhancement in optical absorption of ZnO/TiO₂ indicated that it can be used as an efficient photocatalyst under UV irradiation. The photo-reduction activities of photocatalysts were evaluated using methyl orange as organic contaminant. The experiment demonstrated that the photo-degradation value of ZnO/TiO₂ was significantly higher than that of ZnO.

Online publication date: Sat, 30-Aug-2014

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