摘要： 采用溶胶凝胶法将TiO₂用Fe（Ⅲ）改性并负载玻璃微珠制得复合光催化剂，探讨煅烧时间、Fe-Ti原子比、煅烧温度等因素对催化性能的影响，确定最佳制备条件，并对其进行表征。结果表明，最佳制备条件：V_钛酸丁酯∶V_乙醇∶V_硝酸∶V_去离子水=5∶20∶0.4∶1，Fe-Ti原子比为4%，煅烧温度500 ℃，煅烧时间2 h。在自然光条件下反应0.5 d，TOC降解率复合催化剂比P25高8.61%。

关键词: 催化剂, 中空玻璃微珠, 铁掺杂二氧化钛, 废水处理

Abstract: The composite photo-catalyst has been made from TiO₂ modified with Fe(Ⅲ)and coated on hollow glass microspheres by sol-gel method. The influences of the factors,such as the calcination time,Fe-Ti atomic ratio, calcination temperature,etc. on catalytic performances are discussed,the optimal preparation conditions determined and the composite photo-catalysts characterized. The results show that the optimum preparation conditions are as follows:V_钛酸丁酯:V_乙醇:V_硝酸:V_去离子水=5:20:0.4:1,Fe-Ti atomic ratio 4%,optimum calcination temperature 500 ℃, and optimum calcination time 2 h. After having reacted for 0.5 d under natural light,the TOC degradation rate of composite catalyst is 8.61% higher than that of P25.

Key words: catalyst, hollow glass microspheres, Fe-doped TiO₂, wastewater treatment

中图分类号: 

• X703