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Hydrothermal Synthesis of Surface Modified SrTiO3 Powders
Xu Cunying,Zhang Pengxiang,Hong Pinjie
Author NameAffiliation
Xu Cunying Department of Material, Yunnan Polytechnetic University, Kunming 650051 
Zhang Pengxiang Department of Material, Yunnan Polytechnetic University, Kunming 650051 
Hong Pinjie Department of Chemistry, Yunnan University, Kunming 650091 
Abstract:
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.
Key words:  Hydrothermal method, Surface modified, SrTiO3, Microstructural characterization
FundProject:
水热法制备表面修饰的钛酸锶纳米微粉
徐存英,张鹏翔,洪品杰
摘要:
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),采用水热法制备出表面包裹有DBS的钛酸锶纳米微粉,并应用红外光谱,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:样品为表面包裹有DBS的钛酸锶纳米微粉,其形状较为规则,粒度分布较窄,单分散性较好.粒子的平均粒径为120nm,包裹膜的平均厚度为6nm左右.根据X光谱测量,表面修饰后的钛酸锶纳米微粉均以立方相存在.一般体相钛酸锶微粉为极性粉体.而表面修饰后的钛酸锶纳
关键词:  水热法:表面修饰  钛酸锶:微结构表征
DOI:10.1088/1674-0068/13/2/227-230
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