Preparation of Hollow BaTiO3 and Anatase Spheres by the Layer-by-Layer Colloidal Templating Method
Hollow BaTiO3 and anatase spheres were prepared from multilayered colloidal titanate particles. An inorganic precursor, titanium (IV) bis(ammonium lactate) dihydroxide (TALH) (chemical formula: [CH3CH(O–)CO2–NH4]2Ti(OH)2) was used. First, a layer-by-layer (LBL) colloid-templating method was employed using TALH to generate monodispersed hollow titanate spheres. These spheres were then treated in a Ba(OH)2 solution or distilled water under hydrothermal conditions to transform them into hollow BaTiO3 or anatase spheres, respectively.
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Document Type: Research Article
Affiliations: Toyota Central R&D Laboratories, Inc., Nagakute, Aichi 480-1192, Japan
Publication date: 2006-04-01