| SiO2掺杂TiO2催化超声降解甲基橙溶液 |
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| 引用本文： | 王君,张向东,李绮,韩建涛,李莹,赵迪.SiO2掺杂TiO2催化超声降解甲基橙溶液[J].化学研究,2004,15(1):12-15. |
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| 作者姓名： | 王君 张向东 李绮 韩建涛 李莹 赵迪 |
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| 作者单位： | 辽宁大学,化学系,辽宁,沈阳,110036;辽宁大学,分析测试中心,辽宁,沈阳,110036;辽宁大学,环境科学系,辽宁,沈阳,110036 |
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| 基金项目： | 辽宁大学"211"工程立项专项科学基金资助课题(2003LNUII-30-5). |
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| 摘 要： | 采用实验室合成的SiO2掺杂TiO2作为催化剂,以甲基橙超声降解反应为模型,研究了各种因素对SiO2掺杂TiO2催化超声降解甲基橙的影响.结果表明在SiO2掺杂TiO2催化剂作用下超声降解甲基橙的效果明显优于非掺杂的锐钛矿型TiO2的催化效果.SiO2掺杂TiO2催化剂用量在0.5～1.0g/L之间,超声波频率25kHz,输出功率1.0W/cm2,pH为1.0～3.0时,在甲基橙水溶液初始浓度20mg/L的条件下,80min,降解率达到了98%以上,COD的去除率也达到了99.0%.因此,SiO2掺杂TiO2催化超声降解有机污染物的方法具有很好的应用前景.
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| 关 键 词： | 甲基橙 超声降解 SiO2 TiO2催化剂 |
| 文章编号： | 1008-1011(2004)01-0012-04 |
| 修稿时间： | 2003年7月28日 |
Ultrasonic Degradation of Methyl Orange in Presence of SiO2-doping TiO2 Catalyst |
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| WANG Jun.Ultrasonic Degradation of Methyl Orange in Presence of SiO2-doping TiO2 Catalyst[J].Chemical Research,2004,15(1):12-15. |
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| Authors: | WANG Jun |
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| Abstract: | The various affecting factors were studied on ultrasonic degradation of methyl orange in the presence of SiO_(2)-doping TiO_(2) catalyst. The results indicate that the effects of ultrasonic degradation are more obvious in the presence of SiO_(2)-doping TiO_(2) catalyst than that of pure anatase TiO_(2) catalyst. The ratio of ultrasonic degradation of methyl orange in the acidic condition of pH=1.0～3.0, irradiated with the ultrasound of 25 kHz frequency and power input of 1.0 W/cm~(2) and within 80 min can get to 98% and its COD elimination to 99%, respectively. Thereby the method of ultrasonic degradation of organic pollutants catalyzed by SiO_(2)-doping TiO_(2) catalyst is a better useful prospect technology. |
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| Keywords: | methyl orange ultrasonic degradation SiO_2 TiO_(2) catalyst |
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