稀土离子掺杂TiO_2光催化降解印染废水的研究  

Photocatalytic degradation of dyestuff wastewater by titanium dioxide doped with rare-earth ion

作　　者：陈芳[1] 蔡千喜[2] 胡巧开[3] 陆江林[1] 

机构地区：[1]湖北师范学院化学化工学院,湖北黄石435002 [2]湖北省黄石二中,湖北黄石435002 [3]湖北师范学院城市与环境学院,湖北黄石435002

出　　处：《应用化工》2013年第10期1820-1822,1825,共4页Applied Chemical Industry

基　　金：污染物分析与资源化技术湖北省重点实验室开放基金资助项目(KL2013G04)

摘　　要：用溶胶-凝胶法制备了稀土离子(Nd3+,Sm3+)掺杂TiO2的催化剂,以染料活性嫩黄溶液为目标降解物,研究了2种催化剂的光催化性能。结果表明,同等实验条件下,Nd3+掺杂TiO2比Sm3+掺杂TiO2的降解效果好,当活性嫩黄溶液的初始浓度为100 mg/L,pH=3,Nd3+掺杂TiO2投放量为3 g/L,H2O2加入量为0.3 mL/L时,其降解率可达到92.7%。The titanium dioxide doped with rare-earth ion（ Nda＋ ,Sm3＋ ） was prepared by sol-gel method. Photocatalysis performance of Ti02 doped with rare-earth ion was studied, it target reactive brilliant yellow solution. Results show that ： under the same condition of the preparation, doped with neodymium ions TiO2 of degradation effect is good than doped with samarium ions TiO2. When the reactive brilliant yellow solu- tion for the initial concentration 100 mg/L, pH = 3, the dosage of doped with neodymium ions TiO2 for 3 g/L, the dosage of H2 O5 for 0.3 mL/L, best performance of TiO2 photocatalysis, reaction to the degrada- tion rate reached 92.7%.

关 键 词：稀土离子掺杂 TIO2 光催化 活性嫩黄 

分 类 号：TQ426[化学工程]