Browsing by Author "Wypych, A."

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    Modification of ZnO nanorod arrays with layered precursor of TiO2
    (Видавництво Львівської політехніки, 2012) Bobowska, I.; Opasińska, A.; Wypych, A.; Wojciechowski, P.
    This work presents investigations conducted in the field of preparation of a hybrid nanocomposite composed of the vertically aligned ZnO nanorod arrays coated with the layered precursor of TiO2 (LPT). Effects of the elevated temperature on the structure and morphology evolution of the ZnO nanorod array and their hybrid nanocomposites are described.
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    Synthesis and dielectric investigations of BaTiO3 obtained by soft chemistry route
    (Видавництво Львівської політехніки, 2012) Wypych, A.; Opasińska, A.; Bobowska, I.; Wojciechowski, P.
    A new strategy for preparation of nano-sized barium titanate (BaTiO3) particles was applied by using: layered (tetramethyl) ammonium titanate, barium acetate and tetramethylammonium hydroxide. An addition of barium salt to aqueous layered titanate colloids leads to a precipitation phenomenon by which barium titanate precursor was obtained. The mechanism of this reaction is based on ions exchange which permits to incorporate barium ions into titanate layers. This was confirmed by comparison of broadband dielectric spectroscopy (BDS) data of layered (tetramethyl) ammonium titanate and barium titanate precursor.