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Enhanced Photocatalytic Activity of Thienyl-Porphyrins-TiO2 for Degradation of 4-Nitrophenol

  1. Wangyang Ma,
  2. Jun Li*,
  3. Jingzhou Liu,
  4. Meng Feng

Article first published online: 30 OCT 2012

DOI: 10.1002/cjoc.201200420

Issue

Chinese Journal of Chemistry

Chinese Journal of Chemistry

Volume 31, Issue 2, pages 230–236, February, 2013

Additional Information

How to Cite

Ma, W., Li, J., Liu, J. and Feng, M. (2013), Enhanced Photocatalytic Activity of Thienyl-Porphyrins-TiO2 for Degradation of 4-Nitrophenol. Chin. J. Chem., 31: 230–236. doi: 10.1002/cjoc.201200420

Author Information

  1. Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Material Science, Northwest University, Xi'an, Shannxi 710069, China

*Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Material Science, Northwest University, Xi'an, Shannxi 710069, China

Publication History

  1. Issue published online: 18 FEB 2013
  2. Article first published online: 30 OCT 2012
  3. Manuscript Accepted: 8 JUL 2012
  4. Manuscript Received: 9 MAY 2012

Funded by

  • the National Natural Science Foundation of China. Grant Number: 20971103
  • National College Students' Innovation Fund. Grant Number: 201069707

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Keywords:

  • thienyl-appended porphyrin;
  • metalloporphyrin;
  • titanium dioxide;
  • photocatalytic degradation;
  • 4-nitrophenol

Abstract

5-Mono-(2-thienyl)-10,15,20-triphenyl porphyrin (H2MTP) and its Co(II), Cu(II), Zn(II) metalloporphyrins (CoMTP, CuMTP, ZnMTP) were synthesized and characterized spectroscopically. The corresponding Co(II), Cu(II), Zn(II) metalloporphyrins-TiO2 photocatalysts were then prepared and characterized by means of scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), UV-vis spectra and FT-IR. The photocatalytic activities of these photocatalysts were investigated by testing the photodegradation of 4-nitrophenol (4-NP) in aqueous solution under irradiation with high-pressure mercury lamp and metal halide lamp respectively. The results indicated that these metalloporphyrins greatly enhanced the photocatalytic efficiency of bare TiO2 in degradating the 4-NP, and CuMTP-TiO2 exhibited the highest photocatalytic activity of all photocatalysts. In addition, the first order rate constants of these photocatalytic reactions were calculated.

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