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

doi:10.7517/j.issn.1674-0475.2002.04.241

影像科学与光化学 ›› 2002, Vol. 20 ›› Issue (4): 241-246.DOI: 10.7517/j.issn.1674-0475.2002.04.241

• 研究论文 • 下一篇

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

张俊平, 陈萍

中国科学院, 理化技术研究所, 北京, 100101

收稿日期:2001-10-29 修回日期:2002-03-06 出版日期:2002-07-23 发布日期:2002-07-23
通讯作者: 陈萍

PREPARATION AND PHOTOCATALYTIC PERFORMANCE OF Y₂O₃/TiO₂ CONDUCTED WITH THE DEGRADATION OF SODIUM DODECYLBENZENE SULPHONATE

ZHANG Jun-ping, CHEN Ping

Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, P. R. China

Received:2001-10-29 Revised:2002-03-06 Online:2002-07-23 Published:2002-07-23

摘要/Abstract

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.以水相十二烷基苯磺酸钠(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.

关键词: 二氧化钛, 氧化钇, 复合催化剂

Abstract: Y₂O₃/TiO₂ 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 TiO₂ and Y₂O₃/TiO₂ 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 Y₂O₃/TiO₂ ,calcination conditions and special surface area on composite photocatalyst photoactivity were also investigated.Results show that there exists a best ratio value between Y₂O₃ and TiO₂,while the mass ratio of composite catalyst is 1 to 200,the photocatalytic activity of Y₂O₃/TiO₂ catalyst is 2.4 times as that of TiO₂.

Key words: titanium dioxide, yttrium oxide, composite catalyst

中图分类号:

TQ57

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]. 影像科学与光化学, 2002, 20(4): 241-246.

ZHANG Jun-ping, CHEN Ping. PREPARATION AND PHOTOCATALYTIC PERFORMANCE OF Y₂O₃/TiO₂ CONDUCTED WITH THE DEGRADATION OF SODIUM DODECYLBENZENE SULPHONATE[J]. Imaging Science and Photochemistry, 2002, 20(4): 241-246.

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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

PREPARATION AND PHOTOCATALYTIC PERFORMANCE OF Y₂O₃/TiO₂ CONDUCTED WITH THE DEGRADATION OF SODIUM DODECYLBENZENE SULPHONATE

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