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Synthesis of poly(3, 4-ethylene dioxitiophene)/TiO2 Nanocomposite ; Photocatalytic Efficiency under the Simulated Solar Light

In this study nanocomposite photocatalyst of conducting polymer poly(3, 4-ethylenedioxytiophene) (PEDOT) and TiO2 has been synthesized with the aim of extending photocatalytic activity of TiO2 into the region of visible light irradiation. PEDOT/TiO2 photocatalysts were synthesized by chemical oxidative polymerization with two oxidants ; FeCl3 and ammonium persulfate (APS). Photocatalysts were characterized by Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and scanning electron microscopy. Photocatalytic activity has been tested on removal of C.I. Reactive Red 45 (RR45) dye in aqueous solution by UV-A and simulated solar irradiation. UV/Vis spectrophotometric and total organic carbon (TOC) measurements were performed for determination of color removal and the extent of mineralization. It was found that nanocomposite synthesized with FeCl3 was the most efficient with superior photocatalytic activity when compared to pure TiO2. It was able to remove color in just 15 min under the solar irradiation with mineralization extent of 85% after 90 min.

Synthesis, poly(3, 4-ethylene dioxitiophene)/TiO2, Nanocomposite, Photocatalist, Solar Irradiation

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