Mixed Bismuth and Titanium Oxides obtained by thermolysis of hydroxide coprecipitates

By thermolysis of hydroxide coprecipitates of Bi(III) and Ti(IV) at medium temperatures between 500 and 660° one has obtained the following mixed bismuth and titanium oxides: Ti₈TiO₁₄, Bi₂TiO₅, Bi₄Ti₃O₁₂ and Bi₂Ti₃O₉. The hydroxide coprecipitates were obtained in controlled conditions, starting from Bi(No₃)₃ and TiO(No₃)₂. The thermolysis of the coprecipitates and the formation of mixed oxidic phases were investigated by means of TGA, TDA. IR and X-rays analysis.