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化学学报
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化学学报 ›› 2011, Vol. 69 ›› Issue (23): 2821-2826.DOI: 10.6023/A1105101 上一篇    下一篇

研究论文

5,10,15,20-四(2-噻吩基)金属卟啉修饰TiO2光催化剂的制备及光催化性能

刘惊宙1, 马汪洋1李珺*,1, 姚桂平1, 罗云1, 张逢星1, 王君龙2   

  1. (1合成与天然功能分子教育部重点实验室 西北大学化学与材料科学学院 西安 710069)
    (2渭南师范学院 渭南 714000)
  • 投稿日期:2011-05-10 修回日期:2011-06-06 发布日期:2011-07-29
  • 通讯作者: 李珺 E-mail:junli@nwu.edu.cn
  • 基金资助:

    金属卟啉修饰二氧化钛光催化剂的研制及光催化性能研究;金属卟啉敏化纳米TiO2可见光催化剂的研制

Preparation of TiO2 Photocatalyst Modified by meso-5,10,15,20- Tetrakis(2-thienyl) Metalloporphyrins and Their Photocatalytic Activities

Liu Jingzhou1; Ma Wangyang*,1; Li Jun1; Yao Guiping1; Luo Yun1; Zhang Fengxing1; Wang Junlong2   

  1. (1Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, The College of Chemistry and Material Science, Northwest University, Xian 710069) (2Wei Nan Teachers University, Wei Nan 714000)
  • Received:2011-05-10 Revised:2011-06-06 Published:2011-07-29
  • Supported by:

    Study on preparation and photocatalytic properties of titanium dioxide modified by metalloporphyrins

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合成了5,10,15,20-四(2-噻吩基)卟啉(H2TTP)及它的钴铜锌三种金属卟啉, 并用上述三种金属卟啉分别敏化锐钛矿型的二氧化钛, 制备了CoTTP-TiO2, ZnTTP-TiO2, CuTTP-TiO2三种光催化剂, 对这三种光催化剂进行了扫描电镜(SEM)、X射线光电子能谱(XPS)、紫外-可见漫反射光谱(UV-vis)、红外光谱(IR)的表征. 在300 W汞灯和400 W金卤灯照射下, 制备的光催化剂对4-硝基苯酚溶液的降解表现出比未修饰二氧化钛高的催化效率, 光催化降解反应符合反应一级动力学方程.

关键词: 噻吩基卟啉, 金属卟啉, 二氧化钛, 光催化降解, 4-硝基苯酚

meso-5,10,15,20-Tetrakis(2-thienyl) porphyrin (H2TTP) and its corresponding Co(II), Cu(II), Zn(II) metalloporphyrins were synthesized, then we used metalloporphyrins as photosensitizer, corresponding pohotocatalysts (CoTTP-TiO2, CuTTP-TiO2, ZnTTP-TiO2) were prepared and characterized by SEM, XPS, diffuse reflectance, FT-IR (KBr). The photocatalytic activity of photocatalysts were investigated by the experiment of photodegradation of 4-nitrophenol (4-NP) in aqueous solution using 300 W high-pressure mercury lamp and 400 W metal halide lamp as light source respectively. These photocatalysts have higher photocatalytic activity compared with bare titanium dioxide, and the photocatalytic reaction accords with the first-order kinetic equation.

Key words: thienyl-appended porphyrin, metalloporphyrin, titanium dioxide, photocatalytic degradation, 4-nitrophenol

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