纳米氧化钛氧化硅复合光催化剂的制备及表征

Preparation and character of nanometer TiO_2-SiO_2 composite photo-catalyst

以硅酸钠、硫酸钛为原料,添加乙二醇单甲醚,采用沸腾回流水解法,制备出二氧化钛-二氧化硅复合光催化剂。讨论了二氧化钛-二氧化硅复合光催化剂的最佳制备条件,并用XRD、XPS、TEM、BET等手段对样品进行了表征。结果表明,所制备的二氧化钛-二氧化硅复合光催化剂,由锐钛矿型二氧化钛和无定型二氧化硅组成,粒径在10nm左右。

Nanometer TiO_(2)-SiO_(2) composite photo-catalyst is prepared by hydrolysis with boiling reflux from Na_(2)SiO_(3) and (Ti(SO_(4))_(2),)which are as raw materials.The optimum preparing conditions of the TiO_2-SiO_2 composite photo-catalyst are discussed and the specimen is characterized by XRD,XPS,TEM and BET.The results show that the TiO_(2)-SiO_(2 )particles obtained are spherical and their sizes are about 10 nm,they are composed of anatase TiO_(2 ) and amorphous SiO_(2).