化学沉淀法制备纳米金红石型TiO2粉体及其性能表征

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ＺｎＣＯ３包覆在Ｔｉ（ＯＨ）４沉淀上，在５００℃进预焙解，使ＺｎＣＯ３转变为ＺｎＯ，Ｔｉ（ＯＨ）４转变为Ｈ２ＴｉＯ３。

Preparation of Nanometer Rutile TiO_2 Powders by the Chemical Precipitation and its Properties

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%.