【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
【机 构】
：
沈阳理工大学材料科学与工程学院,东北大学材料与冶金学院,
论文部分内容阅读
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。
Using TiCl4, BaCl2 and NaOH as raw materials, nano-BaTiO3 was prepared by direct precipitation in the microemulsion composed of CTAB / n-butanol / n-hexane / brine. The effect of [OH -] / [Ti4 +] ratio on the yield of barium titanate and the ratio of water to oil on the structure of barium titanate nanostructures were investigated. The results showed that the yield of BaTiO3 increased with the increase of [OH -] / [Ti4 +] , And the yield of BaTiO3 is 72.4% when [OH -] / [Ti4 +] = 6.0. When the ratio of water to oil (W / O) is 3:1, the product is mainly amorphous. ≤ 1, the crystal peak of BaTiO3 obtained is very obvious. The obtained product by XRD, FT-IR, TEM test proved that the product is nano-BaTiO3 powder, particle size range of about 50nm.
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