摘要
以TiCl4 为原料,通过控制盐浓度和水解温度可以在温和条件下制备出晶粒尺寸为 6nm的金红石相氧化钛粉体,比表面积为 175m2 /g.测定了粉体的X衍射、红外和拉曼光谱.TEM照片显示粉体呈放射状颗粒,其粒径尺寸在 2 0 0～ 40 0nm.苯酚的光催化降解实验表明它比具有相同比表面积的锐钛矿粉体有更高的光催化活性.
Rutile nano titania powders have been synthesized by the direct hydrolysis of TiCl4 solutions under mild conditions The crystalline size is about 6 nm calculated from XRD data and the specific surface area is 175 m(2)/g. The powder was characterized by XRD, FT-IR and Raman spectra. TEM image shows that the round particle is about 200similar to400 nm with small acicular at edge. It shows higher photocatalytic activity in the phenol degradation reaction than anatase that has very similar specific surface area. The agglomeration form of the prepared rutile titania, with larger size of several hundred nano meters is very,beneficial for further separation.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2003年第1期74-77,共4页
Acta Chimica Sinica
基金
上海市科委启明星(No.0 0QE1 4 0 36)资助项目
