Preparation, characterization, and photocatalytic activity of polyaniline/ZnO nanocomposite
- 1k Downloads
Polyaniline (PANI)/zinc oxide (ZnO) nanocomposite was synthesized by in-situ polymerization. X-ray diffraction patterns, UV–visible spectroscopy, SEM, and TEM were used to characterize the composition and structure of the nanocomposite. Nanostructured PANI/ZnO composite was used as photocatalyst in the photodegradation of methylene blue dye molecules in aqueous solution. The photocatalytic activity of PANI/ZnO nanocomposite under UV and visible light irradiation was evaluated and was compared with that of ZnO nanoparticles. ZnO/PANI core–shell nanocomposite had greater photocatalytic activity than ZnO nanoparticles and pristine PANI under visible light irradiation. According to these results, application of PANI as a shell on the surface of ZnO nanoparticles causes the enhanced photocatalytic activity of the PANI/ZnO nanocomposite. Also UV–visible spectroscopy studies showed that the absorption peak for PANI/ZnO nanocomposite has a red shift toward visible wavelengths compared with the ZnO nanoparticles and pristine PANI. The effect of different operating conditions on the photocatalytic performance of PANI/ZnO nanocomposite in the photodegradation of methylene blue dye molecules was investigated in a bath experimental setup.
KeywordsConducting polymers Polyaniline ZnO Photocatalyst
The financial support of this research by the University of Tabriz is gratefully acknowledged.
- 10.A.A. Khan, M. Khalid, J. Appl. Polym. Sci. 117, 1601 (2010)Google Scholar
- 20.C. Wang, X. Wang, B.Q. Xu, J. Zhao, B. Mai, P. Peng, G. Sheng, J. Fu, J. Photoch, A. Photobio, Chem. 168, 47 (2004)Google Scholar
- 29.F. Ping-feng, Z. Zhuo, P. Peng, D. Xue-gang, The Chinese Journal of Process Engineering 8, 65 (2008)Google Scholar