水热法制备表面修饰的钛酸锶纳米微粉

以工业原料和常用试剂ＴｉＣｌ４、Ｓｒ（）ＮＯ３）２和ＫＯＨ为基础原料，通过添加表面活性剂十二烷基苯磺酸（ＤＢＳ），并采用制备出表面包裹有ＤＢＳ的钛酸锶纳米微粉姘应用红外光谱，Ｘ射线衍射谱，透射电子显微镜，热分析等一系列手段对其微结构进行了表征。结果表明：样品为表面包裹ＤＢＳ的钛酸锶纳同粉，其形态较为规则，粒度分布较窄，单分散性较好，粒子的平均粒径为１２０ｍｍ，包裹膜的平均厚度为６ｎｍ左右，根据Ｘ光

Hydrothermal Synthesis of Surface Modified SrTiO3 Powders

Using crude materials of industrial product TiCl4, ordinary reagent Sr(NO3)2 and KOH, by adding surface active agent dodecylbenzenesulphonic acid (DBS), the nanosized SrTiO3 partide modified with a layer of DBS were successfuly prepared through the hydrothermal method and their microstructure were characteried. FTIR, DAT and TG were used for the determination of the components. It can be proved that the nanosized SrTiO3 were capped by a layer of DBS. The sizes, shapes and crystal phase were determined by TEM and XRD. The results indicate that the product are cabic phase, small crystal (size distribution and Little agglomeration. The average size of the powders is about 120nm. The average size of layer of DBS is about 6 nm. In contrast with the bulk SrTiO3 The polarity of nanometer SrTiO3 powder wass changed by coating with a layer of DBS.