微波法制备纳米TiO2粉末

TiO_2 Nano Powders Prepared by Means of Microwave Radiation

摘要:

以海绵钛为原料，源溶液经微波辐射，生成水合二氧化钛溶胶，加入少量无水乙醇，在１００℃以下，常压烘干，制备出纳米ＴｉＯ２粉末。ＸＲＤ分析纳米ＴｉＯ２粉末的晶体结构为锐钛矿型；ＴＥＭ显示，纳米颗粒的形貌为球形，粒径在６０ｎｍ～１００ｎｍ之间，粒度分布均匀；试样在水中分散的Ｚｅｔａ电位值为＋４８．７ｍＶ，分散性好。此种方法，原料成本低，工艺简单易行，粒度容易控制。

Abstract:

TiO 2 nano powders were prepared by means of microwave radiation using the collosol of titanium dioxide hydrate made from sponge titanium. TEM analysis indicates that the morphology of the nano particles is spherical, and the particle size is in the range of 60 nm~100 nm. The distribution of the particle size is fine. The Zeta potential value of the sample in water is +48 7 mV, indicaling good dispersivity. The transformation temperature of the nano crystal is much lower than that of the common crystal. The starting material is cheaper, and using this method nano particle size is easily controlled in production.