Glycothermal法制备钛酸锶钡纳米晶的研究

Glycothermal Preparation of Barium Strontium Titanate Nanocrystals

采用Glycothermal法制备了尺寸分布窄的准球形钛酸锶钡纳米晶.利用XRD、拉曼光谱以及TEM对合成纳米晶结构及形貌进行了测定与表征,研究了Glycothermal法制备BST纳米晶过程中醇-水比、温度和液相中Ba/Sr比等因素对产物组成、晶体结构、晶粒尺寸与结晶性的影响规律.结果表明:利用Glycothermal法,可在无矿化剂的条件下制备出单分散性好的BST纳米晶.

（Ba,Sr）TiO3 nanocrystals with narrow size distribution and quasi-spheric shape were successfully prepared by glycothermal method. The synthesized products were characterized by XRD, TEM and Raman spectroscope. Chemical composition, crystal structure, particle size and crystallinity are strongly influenced by the factors including butanediol/water ratio, temperature and Ba/Sr ratio of the liquid media. The results manifest that the glycothermal process may provide a simple route to the synthesis of monodispersed BST nanocrystals without mineralizing agents.