| 以十二烷基苯磺酸钠为模型反应物的Y2O3／TiO2复合催化剂的制备及光降解催化性能 |
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| 引用本文： | 张俊平 陈萍. 以十二烷基苯磺酸钠为模型反应物的Y2O3／TiO2复合催化剂的制备及光降解催化性能[J]. 感光科学与光化学, 2002, 20(4): 241-246 |
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| 作者姓名： | 张俊平 陈萍 |
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| 作者单位： | 中国科学院,理化技术研究所,北京,100101 |
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| 摘 要： | 采用浸渍法制备了Y2O3/TiO2复合氧化物催化剂，并用紫外可见光谱、SEM、BET等手段对其进行了表征，以水相十二烷苯苯磺酸钠（DBS）溶液的光催化降解反应为实验模型，考察了TiO2掺杂Y2O3后的光催化氧化活性，并探讨了Y2O3掺杂量、吸附性、焙烧温度及时间对Y2O3/TiO2复合氧化物催化剂光催化活性的影响，实验结果表明：复合氧化物催化剂Y2O3/TiO2存在某一最佳组分比值，当两者重量比为1：200时，其催化活性是同样条件下前体催化剂TiO2的2.4倍。
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| 关 键 词： | 十二烷基苯磺酸钠 模型反应物 制备 光降解 催化性能 二氧化钛 氧化钇 复合催化剂 废水处理 |
| 文章编号： | 1000-3231(2002)04-0241-06 |
| 修稿时间： | 2001-10-29 |
PREPARATION AND PHOTOCATALYTIC PERFORMANCE OF Y2O3/TiO2 CONDUCTED WITH THE DEGRADATION OF SODIUM DODECYLBENZENE SULPHONATE |
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| ZHANG Jun-ping,CHEN Ping. PREPARATION AND PHOTOCATALYTIC PERFORMANCE OF Y2O3/TiO2 CONDUCTED WITH THE DEGRADATION OF SODIUM DODECYLBENZENE SULPHONATE[J]. Photographic Science and Photochemistry, 2002, 20(4): 241-246 |
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| Authors: | ZHANG Jun-ping CHEN Ping |
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| Abstract: | Y 2O 3/TiO 2 catalysts were prepared by impregnation method and characterized by means of UV,SEM,and BET.Being a model reaction,the photocatalytic degradation of DBS solution was investigated in TiO 2 and Y 2O 3/TiO 2 powder suspensions and irradiated by high pressure mercury lamp.Photocatalytic degradation efficiency of different catalysts were evaluated by the apparent first-order kinetic constant and the decomposition rate of DBS.The effects of preparation conditions,the mass ratio and adsorption of Y 2O 3/TiO 2 ,calcination conditions and special surface area on composite photocatalyst photoactivity were also investigated.Results show that there exists a best ratio value between Y 2O 3 and TiO 2,while the mass ratio of composite catalyst is 1 to 200,the photocatalytic activity of Y 2O 3/TiO 2 catalyst is 2.4 times as that of TiO 2. |
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| Keywords: | titanium dioxide yttrium oxide composite catalyst |
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