دانلود فایل مقاله In-situ synthesis and characterization of conducting metal — polyaniline nanocomposites

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بخشی از متن دانلود فایل مقاله In-situ synthesis and characterization of conducting metal — polyaniline nanocomposites :


سال انتشار : 2008

تعداد صفحات :10

Metal—Polyaniline nanocomposites such as Platinum-Polyaniline nanocomposite is prepared by insitu oxidative polymerization of aniline and reduction of Pt+4 ions into Pt nanoparticles. Thepolymerization of aniline was carried out in the presence of 1(2PtCN6 [Potassium Hexa CyanoPlatinate (IV)] as oxidizing agent. During the reaction aniline monomers undergo oxidation andform polyaniline (PANT) whereas the reduction of [PtCN6]-2 ions result the formation of Ptnanoparticles. Nano-sized Pt particles were prepared by controlled reduction of Platinum precursorin micro emulsion medium, stabilized with the anionic surfactant (AOT). Micro emulsion solutionacts as both emulsifier and dopant to obtain stable nanocomposite. PANI-AOT-Pt nanocompositeis characterized by FT-IR spectroscopy and scanning microelectronic microscopy (SEM).

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