The Preparation and Characterization of Organic Solvent Dispersible Polyaniline Coated Titania Hybrid Nanocomposites

Abstract:

The polyaniline (PANI) coated titania (TiO2) has been prepared with ammonium persulfate (APS) as an oxidant in sodium dodecylsulfate(SDS) micellar aqueous solution. These nanosized powders could transfer into the organic phase. With increase in the amount of SDS, the dispersibility into the organic solvent was increased. Consequently, the electrical conductivity of the product was also decreased. The obtained composites showed 14.16 S/cm of conductivity at maximum while the value was almost independent on the polyaniline coating ratio in range of 100~20wt%. The conductivity value of composite with 20wt% polyaniline was 70000 times higher than that of raw titania. Modified titania had properties of polyaniline and titania together. In addition these composite showed the photoconductive response against the UV irradiation, which might show the existence of P-N junction between titania and polyaniline. The detailed structure and property analyses with X-ray, UV-spectroscopy, electron microscopy and so on will be discussed in relation to the synthetic conditions

• Periodical: Materials Science Forum (Volume 569)
• Pages: 161-164
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.569.161
• Online since: January 2008
• Authors: Youn Gyu Han, Takafumi Kusunose, Tohru Sekino
• Keywords: Micelle, Photoconductivity, P-N Junction, Polyaniline (PANI), Titania

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