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Influence of thermal treatment on the photocatalyst nanocomposite ZnO/TiO2

Quimica Nova, ISSN: 1678-7064, Vol: 38, Issue: 1, Page: 55-59
2015
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ZnO/TiO nanocomposites were prepared by impregnating zinc acetate dihydrate on the surface of titanium dioxide P25, followed by thermal treatment at 350, 600, 750, and 900°C, in order to investigate the TiO phase and titanate formation and the role of the latter in the photocatalytic activity of the nanocomposite. In the nanocomposites, the anatase-to-rutile transition is favored due to the presence of Zn, and the conversion is nearly complete at 750°C. The presence of zinc metatitanate in the sample heated at 600°C had no significant effect on the nanocomposite photocatalytic activity.

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