摘要
纳米金红石型二氧化钛是一种重要的无机功能材料，其制备及其应用在当代愈来愈受重视．本文采用化学沉淀法，将ＺｎＣＯ_３包覆在Ｔｉ（ＯＨ）_４沉淀上，在５００℃进预焙解，使ＺｎＣＯ_３转变为ＺｎＯ，Ｔｉ（ＯＨ）_４转变为Ｈ_２ＴＯ_３．然后溶去９７％的包覆ＺｎＯ粉体，８００℃焙烧，最终制得粒径约２０～６０ｎｍ的金红石型二氧化钛粉体．利用ＴＥＭ、ＸＢＤ、ＩＣＰ对粉体粒子的形貌、大小、物相及化学组成进行了分析；并利用ＵＶ－２１００Ｓ紫外分光光度计进行了光学性能测试，结果此粉体对２４Ｄ－４００ｎｍ的紫外线有较强的吸收，对 ４００－ ８００ｎｍ波段范围的光反射率达 ９２％以上．
Nanometer miller TiO2 is a new kind of inorganic functional material, which results in more and more concerns on preparation and applicaton of it. The method of chemical precipitation was employed in this paper, ZnCO_3 was coated on the surface of Ti(OH)_4, then heating them to make ZnCO_3 transfer to ZnO and Ti(OH)_4 transfer to H_2TiO_3 at 500, dissolving 97wt% coated ZnO powders. Finally, the rutile TiO_2 powders were prepared after having calcined the H_2TiO_3 powder (containing 3Wt%ZonO) at 800. The morphology, size, composition of rutile TiO_2 powders were studied by TIM.ICP and XRD. Simultaneously, the optical properties of products were measured by UV - 21005 spectrometer, the results proved that the ultra violet lights in the range Of 240 400nm were absorbed intensely and the refractive index for the visible lights in the range of 400 ~ 800nm reached above 92%.
出处
《材料科学与工艺》
EI
CAS
CSCD
1999年第2期60-64,共5页
Materials Science and Technology
关键词
纳米
金红石型
二氧化钛
化学沉淀法
粉体
性能
nanometer rutile TiO_2
chemical precipitation
composite posders
optical properties
