Sb_2O_5/TiO_2催化超声降解甲基橙溶液  

Study on ultrasonic degradation of methyl orange in presence of Sb_2O_5 doping TiO_2 catalyst

作　　者：王君[1] 韩建涛[1] 张向东[1] 郭宝东[1] 刘振荣[1] 李绮[1] 康平利[1] 李红[1] 

机构地区：[1]辽宁大学化学系,沈阳110036

出　　处：《安全与环境学报》2004年第6期27-29,共3页Journal of Safety and Environment

摘　　要：采用实验室合成的 Sb2 O5掺杂 Ti O2 作为催化剂 ,研究各种因素对甲基橙的超声催化降解反应的影响。结果表明 ,在 Sb2 O5掺杂Ti O2 催化剂作用下 ,甲基橙的超声催化降解效果明显优于单独使用Ti O2 的情况。 1 .5 %掺杂量的催化剂 ,用量在 1 .0～ 1 .5 g/L之间 ,超声波频率 2 5 k Hz,输出功率 1 .0 W/cm2 ,p H为 1 .0～ 3.0时 ,初始浓度为 2 0 mg/L的甲基橙水溶液 ,1 0 0 min左右基本可全部降解 ,COD去除率达到 99.0 %以上。Sb2 O5掺杂 Ti O2This paper gives a detailed study on the various affecting factors on the ultrasonic degradation of methyl orange in the presence of Sb_2O_5 doping TiO_2 as a catalyst prepared in laboratory conditions. The research results indicate that the effect of the ultrasonic degradation in the presence of the catalyst proves much more obvious than in presence in or absence of the one fold industrial (TiO_2) catalyst. The ratio of degradation and its COD in that case can reach 100% and 99%, respectively, for the methyl orange solution at 20 mg/L original concentration on the condition of pH=1.0-3.0, irradiated with the ultrasound at a frequency of 25 kHz and power input of 1.0 W/cm^2during 100 min. Therefore the method suggested here on the ultrasonic degradation of organic pollutants catalyzed by Sb_2O_5doping TiO_2proves to be highly promising.

关 键 词：环境工程 TiO2改性 Sb2O5掺杂 超声波 甲基磴降解 

分 类 号：X703.1[环境科学与工程—环境工程]