氧化钆掺杂二氧化钛催化超声降解甲基橙的研究  

Study on Ultrasonic Degradation of Methyl Orange on Gd_2O_3-doped TiO_2 Catalyst

作　　者：王君[1] 韩建涛[1] 张向东[1] 刘振荣[1] 郭宝东[1] 佟键[2] 张鹏[2] 康平利[2] 

机构地区：[1]辽宁大学化学系,辽宁沈阳110036 [2]辽宁大学分析测试中心,辽宁沈阳110036

出　　处：《化工环保》2004年第3期161-164,共4页Environmental Protection of Chemical Industry

基　　金：国家自然科学基金资助项目(20371023)

摘　　要：用实验室合成的Gd2O3掺杂TiO2为催化剂,以甲基橙超声降解反应为模型,研究了各种因素对Gd2O3掺杂TiO2催化超声降解甲基橙的影响。研究结果表明,Gd2O3掺杂TiO2催化超声降解甲基橙的效果明显优于非掺杂的锐钛矿型TiO2的情况;在甲基橙溶液pH1 0～3 0、甲基橙质量浓度20mg/L、溶液用量100mL、催化剂用量0 5～1 0g/L的条件下,用输出功率1 0W/cm2和频率25kHz的超声波照射60min,甲基橙降解率可达98 6%,COD去除率可达99 0%。The various affecting factors were studied on ultrasonic degradation of methyl orange in the presence of Gd_2O_3-doped TiO_2 catalyst prepared in laboratory.The results indicate that the effects of ultrasonic degradation are more obvious in the presence of Gd_2O_3-doped TiO_2 catalyst than in the presence of pure anatase TiO_2 catalyst.Under the conditions of solution pH 1.0-3.0,methyl orange mass concentration 20 mg/L,solution volume 100 mL,catalyst dosage 0.5-1.0 g/L,irradiation power 1.0 W/cm^2,frequency 25 kHz,and irradiation time 60 min,the degradation rate of methyl orange can come up to 98.6% and the removal rate of COD to 99%.

关 键 词：氧化钆掺杂 二氧化钛 催化剂 超声降解 甲基橙 

分 类 号：O611.4[理学—无机化学]