Eu^(3+)/TiO_2光催化剂降解罗丹明B

Photocatalytic Degradation of Rhodamine B by Eu^(3+) Dope TiO_2

采用溶胶-凝胶法合成了不同Eu3+掺杂量、不同煅烧温度的Eu3+/TiO2的光催化剂,利用XRD和FT-IR对样品进行表征和分析.以罗丹明B为目标降解物,对所制样品光活性进行了研究;同时,考察了助催化剂对其光催化性能的影响.结果表明,稀土Eu3+的掺杂能细化晶粒,在500℃下煅烧,Eu3+/TiO2摩尔数比为0.05%的催化剂,加入5 mL助催化剂,三基色节能灯照射3 h,降解率可达91.8%.

The Eu3＋/TiO2 photocatalyst with different amount doped Eu 3＋and different calcination temperatures were synthesized by sol-gel method, and the obtained photocatalyst were characterized by XRD and FT-TR.Rhodamine B was used as the target degradation of the optical activity of the prepared samples ;also, the influence of cocatalyst on its photocatalytic performance was investigated .The results showed that rare earth doping of Eu 3＋could grain the re-finement, and when calcined at 500℃, Eu3＋/TiO2 molar ratio of 0.05%catalyst, added 5 mL cocatalyst, irradiated under tricolor energy 3 h, the degradation rate could be 91.8%.