催化学报

催化学报 ›› 2007, Vol. 28 ›› Issue (3): 229-233.

• 研究论文 • 上一篇    下一篇

酞菁改性的介孔TiO2的制备及其可见光光催化活性

李晓佩,陈锋,张金龙   

  1. 华东理工大学精细化工研究所, 结构可控先进功能材料及其制备教育部重点实验室, 上海 200237
  • 收稿日期:2007-03-25 出版日期:2007-03-25 发布日期:2007-03-25

Preparation of Phthalocyanine-Modified Mesoporous Titania and Its Visible-Light Photocatalytic Activity

LI Xiaopei, CHEN Feng*, ZHANG Jinlong   

  1. Laboratory for Advanced Materials, Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, China
  • Received:2007-03-25 Online:2007-03-25 Published:2007-03-25

PDF

1146

被引次数

31

摘要： 利用软模板法制备了介孔TiO2, 小角XRD和BJH孔径分布测定显示所制备的介孔TiO2具有良好的孔道有序性,平均孔径为4.75 nm. 通过四羧基铜酞菁(CuPcTc)表面吸附改性得到了CuPcTc敏化的介孔TiO2(CuPcTc-TiO2)可见光光催化剂. CuPcTc-TiO2光催化剂在可见光(λ>550 nm)照射下显示了良好的光催化降解荧光素的能力,并且在CuPcTc吸附量(质量分数)为4%时,光催化剂具有最高的可见光光催化活性. 在降解荧光素时, CuPcTc-TiO2显示出比CuPcTc敏化的P25(CuPcTc-P25)催化剂更高的可见光光催化活性.

关键词: 四羧基铜酞菁, 敏化, 二氧化钛, 光催化, 可见光, 荧光素, 降解

Abstract: Mesoporous titania was successfully prepared by the soft-template method. The low a ngle XRD pattern and BJH pore distribution indicated that the pores of mesoporou s titania were well ordered and had a average pore diameter of 4.75 nm. Cu( Ⅱ)-tetracarboxyphthalocyanine (CuPcTc)-sensitized mesoporous titania (CuPcTc -TiO2) photocatalyst samples were prepared by adsorption of CuPcTc on the surface of mesoporous titania. Under the irradiation of visible light (λ>5 50 nm), CuPcTc-TiO2 showed high photocatalytic activity for the degradat ion of fluorescein and had optimum visible-light activity when the CuPcTc ad sorption amount was 4% in mass fraction. In addition, CuPcTc-TiO2 exhibit ed higher visible-light photocatalytic activity than CuPcTc-sensitized P25 (CuP cTc-P25) for the degradation of fluorescein.

Key words: copper(Ⅱ)-tetracarboxyphthalocyanine, sensitization, titania, photocatalysis, visible light, fluorescein, degradation