摘要： 采用凝胶 －溶胶法制备了不同晶型纳米 TiO2，通过 X射线衍射（XRD）和扫描电子显微镜（SEM）表征制备出的纳米 TiO2晶型为锐钛矿型和金红石型，粒径约为 50nm；考察了不同种类分散剂对不同晶型纳米 TiO2 在水中分散性能的影响，重力沉降评价、分光光度测试、粒径的测试结果表明：锐钛矿型纳米 TiO2在含分散剂六偏磷酸钠（SHMP）的水溶液中分散较好；金红石型纳米 TiO2在含分散剂羧甲基纤维素钠（CMC）的水溶液中分散性较好。
关键词:
纳米 TiO2,
晶型,
分散剂,
稳定性
Abstract: By using the gel-sol process to prepare different crystal-type nano-TiO2. The prepared crystal phase of nano-tio, were anatase and rutile with grain size about 50 nm, determined by XRD, SEM. The influence of dispersants on the dispersing performance of different crystal-type nano-TiO2 were studied. The assessment by gravity sedimentation, the test results of spectrophotometer and grain size test showed that anatase nano-TiO2 had a good dispersion in the SHMP water solution and the rutile nano-TiO2 dispersed well in the CMC water solution.
Key words:
nano-TiO2,
crystal,
dispersant,
stability
罗晓民１, 吴东秋２, 冯见艳１, ２, 杨菲菲１, ２. 不同晶型纳米 TiO2 的制备及其在水中分散性能的研究[J]. 涂料工业, 2013, 43(5): 35-39.
Luo Xiaomin, Wu Dongqiu, Feng Jianyan, Yang Feifei,. Research on the Preparation and Dispersing of Different Crystal Nano- TiO2 in Water[J]. Paint & Coatings Industry, 2013, 43(5): 35-39.