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Article – Journal of Nanoscience and Technology

Journal of Nanoscience and Technology, Volume 1,Issue 1,2015 Pages 9-12

Enhanced Photocatalytic Activity of Conducting Polypyrrole-TiO2 Nanocomposite for Degradation of Organic Dyes under UV Light Irradiation
M. Sangareswari, M. Meenakshi Sundaram*

The objective of this study was to investigate and compare the kinetic and photocatalytic activity of conducting polypyrrole-TiO2 nanocomposite for the degradation of Methylene Blue (MB) and Acid Orange 7 (AO7) dyes under UV light irradiation. Conducting polypyrrole-TiO2 nanocomposite was synthesised by chemical oxidative polymerization method. The synthesised nanocomposite was characterized by TEM, SEM-EDAX, XRD, FT-IR and UV-DRS analysis. The effect of TiO2 nanoparticles embedded into conducting polypyrrole on the morphology, structure and crystalline size of the conducting polypyrrole is studied by these techniques. A possible photocatalytic mechanism for the degradation of organic dyes was also investigated. The effect of various operational parameters like concentration, time, catalyst loading and pH on dyes were studied. This result indicates that conducting polypyrrole-TiO2 nanocomposite shows high photocatalytic performance for the degradation of methylene blue and acid orange 7 dyes under UV system.
Keywords: Nanocomposite; Methylene Blue; Acid Orange 7; Photodegradation; UV Light;