微乳液-直接沉淀法合成纳米BaTiO_3粉体  

The Synthesis of Nano-BaTiO_3 Powder by Direct Precipitation Method in Microemulsion

作　　者：高景龙[1] 李勇[2] 何金桂[2] 李爽[1] 

机构地区：[1]沈阳理工大学材料科学与工程学院,辽宁沈阳110168 [2]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《化学与粘合》2010年第2期16-18,共3页Chemistry and Adhesion

摘　　要：以TiCl4、BaCl2和NaOH为原料,在CTAB/正丁醇/正己烷/盐水构成的微乳液中采用直接沉淀法制备了纳米BaTiO3。考查了[OH-]/[Ti4+]比值对纳米钛酸钡收率及水油比对纳米钛酸钡结构的影响实验结果表明:BaTiO3收率随[OH-]/[Ti4+]比值的增加而增大,当[OH-]/[Ti4+]=6.0时,BaTiO3收率为72.4%;水油比(W/O)为3∶1时,生成产物主要以无定形为主,当W/O≤1时,所得BaTiO3的晶体特征峰非常明显。所得产物经XRD、FT-IR、TEM检测,证明该产物为纳米BaTiO3粉体,粒径范围在50nm左右。With using TiCl4, BaCl2 and NaOH as raw materials, the nano-BaTiO3 was synthesized by direct precipitation method in the CTAB / n-butanol / n-hexane / brine microemulsion. The effects of the ratio of [OH-] / [Ti4＋] and water to oil （W/O） on BaTiO3 yield and structure were investigated. The results showed that the BaTiO3 yield enhanced as the ratio of [OH-] / [Ti4＋] was increasing, and when [OH-] / [Ti4＋] = 6.0,the yield of BaTiO3 was 72.4%; when W/O ≤1 ,the obtained BaTiO3 had a better crystal structure and when W/O was 3 ： 1 ,the product was mainly amorphic. The product was tested by XRD,FT-IR,TEM,and proved that it was nano-BaTiO3 powder with a particle size of 50nm.

关 键 词：微乳液 直接沉淀法 纳米钛酸钡 

分 类 号：TQ710.6[化学工程]