کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
60165 | 1419455 | 2013 | 7 صفحه PDF | دانلود رایگان |
A three-dimensional ordered macroporous CdS/TiO2 film was prepared by the sol-gel method with a colloidal crystal template and S2− ion exchange, and it exhibited high visible light photocatalytic activity for the aqueous degradation of rhodamine B and 4-chlorophenol. The modification with CdS gave visible light absorption by photosensitization and better separation of photo-induced electrons and holes. The ordered macroporous structure gave higher light utilization and faster reactant transport.
摘要采用胶体晶体模板辅助溶胶-凝胶法以及S2–离子交换法合成了三维有序大孔CdS/TiO2膜. 结果表明, 该薄膜材料在可见光催化降解污染水中罗丹明B和对氯苯酚的反应中表现出高活性. 这可归因于修饰剂CdS的光敏化作用实现可见光催化, CdS-TiO2之间形成了异质结, 促进了电子和空穴的分离; 另一方面, 有序大孔结构有利于光的利用以及反应物的扩散和吸附.
Graphical AbstractThree-dimensional ordered macroporous CdS/TiO2 films prepared by the sol-gel method with a colloidal crystal template and S2− ion exchange exhibited improved visible light photocatalytic activity due to improved light utilization and CdS photosensitization.Figure optionsDownload as PowerPoint slide
Journal: Chinese Journal of Catalysis - Volume 34, Issue 5, May 2013, Pages 949–955