The coupling of zinc oxide tetrapods (t-ZnO) with anatase TiO2 in the form of CVD coatings on ZnO nanotetrapods was investigated. t-ZnO/TiO2 core-shell structures, consisting of uniformly and completely TiO2 covered ZnO nanotetrapods, were characterized by scanning electron microscopy, X-ray diffraction and UV-Vis spectra. Photocatalytic activity, determined by degradation of a sodium methyl red solution, was found to be comparable to pure t-ZnO, while improved separation easiness was verified that makes the presented powders promising for wastewater treatment.
Preparation of Tetrapod-Like ZnO/TiO(2) Core-Shell Nanostructures as Photocatalytic Powder
Visentin F;EL HABRA, NAIDA;CASARIN, MAURIZIO;
2011
Abstract
The coupling of zinc oxide tetrapods (t-ZnO) with anatase TiO2 in the form of CVD coatings on ZnO nanotetrapods was investigated. t-ZnO/TiO2 core-shell structures, consisting of uniformly and completely TiO2 covered ZnO nanotetrapods, were characterized by scanning electron microscopy, X-ray diffraction and UV-Vis spectra. Photocatalytic activity, determined by degradation of a sodium methyl red solution, was found to be comparable to pure t-ZnO, while improved separation easiness was verified that makes the presented powders promising for wastewater treatment.
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