表面活性剂辅助溶剂热制备K0.5Na0.5NbO3基陶瓷粉体  

Preparation of K0.5Na0.5NbO3-based powders by surfactant-assisted solvothermal method

作　　者：周媛[1] 李辉[1] 蔡艳芝[1] 吴华霞[1] ZHOU Yuan;LI Hui;CAI Yanzhi;WU Huaxia(College of Materials Science and Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China)

机构地区：[1]西安建筑科技大学材料科学与工程学院

出　　处：《功能材料》2019年第11期11215-11220,共6页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51672207,51972261);陕西省大学省创新创业训练资助项目(S201910703096);钢铁工业环境保护国家重点实验室开放基金课题资助项目(YZC2017Ky02)

摘　　要：采用表面活性剂辅助溶剂热合成K0.5Na0.5NbO3基陶瓷粉体,系统研究了助表面活性剂、表面活性剂以及助表面活性剂辅助表面活性剂对合成粉体结构和形貌的影响。结果表明,添加不同含量异丙醇(IPA)可得到不同结构和形貌的K0.5Na0.5NbO3粉体;表面活性剂使得粉体形貌规则,异丙醇含量一定,随着表面活性剂(SBDS、PEG400)浓度的增加,粉体颗粒形貌变得规则且异丙醇具有细化粉体的作用,相比于SBDS、PEG400使得粉体形貌更加规则;表面活性剂(PEG400)浓度一定,需选择合适的异丙醇含量可获得粒径更小的规则形貌粉体,即PEG400=1 g/L,V(IPA)/V(H2O)=2/3和3/2可得到粒径约300 nm的正方体颗粒。The K0.5N0.5NbO3-based powders was synthesized by surfactant-assisted solvothermal method. The influence of cosurfactant, surfactant and cosurfactant assistant surfactant on phase and morphology of K0.5Na0.5NbO3 powders was studied. The results show that when adding different content of isopropanol(IPA), the K0.5Na0.5NbO3 powders showed different structure and morphology. Surfactant made the morphology of powders regular, when isopropanol content was certain. With the increase of surfactant concentration(SBDS, PEG400), the morphology of powders made more regular and isopropanol could make the powder refine. Compared with SBDS, the PEG400 made the morphology of powders more regular. When the content of isopropanol(PEG400) was certain, the regular morphology powders with smaller particle size could be obtained by choosing appropriate isopropanol content. Namely, PEG400=1 g/L, V(IPA)/V(H2O)=2/3 or 3/2 and the cubic particles with a particle size of about 300 nm could be obtained.

关 键 词：十二烷基苯磺酸钠 聚乙二醇400 异丙醇 K0.5NA0.5NBO3 

分 类 号：TB34[一般工业技术—材料科学与工程]