Preparation of Anatase-Type TiO_2 Nanoparticals from Ti (SO4)2 Solution under Hydrothermal Conditions and Its Photocatalytic Performance

以Ti(SO_4)_2水溶液为原料,在水热条件下直接水解合成了锐钛型纳米TiO_2颗粒.利用透射电镜(TEM)、X射线衍射(XRD)、BET低温吸附和紫外-可见光谱(UV-Vis)等方法对产物进行了表征,并研究了样品光催化降解基橙(MO)的性能.结果表明所制得纳米TiO_2颗粒为锐钛矿型,晶型良好,平均粒径为24 nm,BET比表面积约为56.20 m~2·g~(-1).光催化活性与商晶纳米TiO_2(P25)相近,具有良好的工业应用前景.Anatase-type TiO_2 fine powders were synthesized under hydrothermal condition.The precursor was obtained via precipitation route using Ti(SO_4)_2.The characterization of the as-prepared sample was confirmed by TEM,XRD,UV-Vis and low temperature N2 adsorption measurements(BET).The photocatalytic activity was also investigated by the degradation of methyl orange solutions.The particles of the as-synthesized sample with narrow size distribution had an average diameter of about 24 nm.The specific BET surface area of the as-synthesized sample was about 56 m~2·g~(-1),which is similar to the commercial TiO_2 (P25).The prepared materials showed the similar photocatalytic activity when compared with the performance of commercial TiO_2 (P25).国家自然科学基金; 哈尔滨工业大学校科研和教改项目; 国防科工委军工遗留专项基金; 国家大学生创新训练计划项目SCI(E)EIPubMed中文核心期刊要目总览(PKU)中国科技核心期刊(ISTIC)中国科学引文数据库(CSCD)13767-7693