(Ba,Pb)TiO~3的水热合成

以醋酸钡和钛酸四丁酯为原料, 在温和的水热条件下成功地制备出四方结构BaTiO~3和纯钙钛矿结构PbTiO~3, 以及固溶体(Ba, Pb)TiO~3。与氯离子和硝酸根离子比较, 醋酸根离子更有利于BaTiO~3晶粒的增大。以活性的钛酸四丁酯作为钛源, 200℃-240℃的碱液中, 即会有四方相BaTiO~3的形成, 高填充度也能促进四方相BaTiO~3的形成。

Hydrothermal synthesis of (Pb, Ba)TiO~3

Tetragonal BaTiO~3, perovskite-typed PbTiO~3 and (Ba, Pb)TiO~3 solid solution have been prepared from barium (lead) acetate and tetrabutyl titanate under milder hydrothermal condition. As compared with chlorion and nitrate ion, acetate ion would accelerate the formation of great-grained particles of BaTiO~3 more considerably. The tetragonal BaTiO~3 could be synthesized by adopting reactive titanium source, tetrabutyl titanate, in alkali aqueous solution at as low as 200℃- 240℃. The higher degree of fill would promote the production of tetragonal BaTiO~3.