فهرست مقالات Pt Nanoparticles

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  1 - In-situ synthesis and characterization of conducting metal — polyaniline nanocomposites
  M. Yari S. Sedaghat
  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 [Potass چکیده کامل

  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). پرونده مقاله
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  2 - Platinum Nanoparticles Deposited on Oxygen-Containing Functional Groups at Carbon Vulcane XC-72 as a Cathode Catalyst for Direct Methanol Fuel Cell
  Sajjad Sedaghat Sharehjini Mohammad Yari Omid Moradi
  Surface oxidized carbon vulcane XC-72 is prepared as catalyst support and platinumnanoparticles are chemically anchored onto the modified surface. The nanoparticles of Pt weresynthesized by reduction of H2PtCl6 with sodium borohydride in a 5.5 M buffer solution ofsodium چکیده کامل

  Surface oxidized carbon vulcane XC-72 is prepared as catalyst support and platinumnanoparticles are chemically anchored onto the modified surface. The nanoparticles of Pt weresynthesized by reduction of H2PtCl6 with sodium borohydride in a 5.5 M buffer solution ofsodium citrate; the complexation of citrate with metal ions is beneficial to the formation ofnanoparticles. The electro-oxidation of liquid methanol of this catalyst as a thin layer on glassycarbon electrode is investigated at room temperature by cyclic voltammetery. The results showthat surface oxidized carbon vulcane support allows to obtain higher power density (about threetimes higher) in comparison to carbon vulcane XC-72 based electro catalyst. پرونده مقاله