| Nanomaterials have many unique physical, chemical and mechanical properties, so they have been exploited for the extensive potential applications in optics, electronics, magnetics, catalyst, sensing, biomedicine, microreacter, etc. In the last decade, the synthesis and properties of nanomaterials have been the research hotspot of crossed subjects of physics, chemistry, materials, biology and others, and the technology of synthesis nanomaterials with high quality has been one of the keys of nanomaterial research.With the development of the synthesis and assembling of nanomaterials in liquid, surfactant, polymer and other amphiphilic molecules have attracted many interests due to their control on the selected growth and morphology of nanomaterials, which has been one of the focuses of the colloid and interface chemistry field.In this paper, we have successfully synthesized silver nanoplates with controllable edge at room-temperature assisted by poly (vinyl pyrrolidone) (PVP) as the capping agent with aniline as the reductant. The structure, size and morphology of the products were characterized by kinds of analysis technology, and the experiment results indicate that, the size of Ag nanoplates depends on reaction time and mole ratio of oxidant and reductant, and any extra energy even stirring are not needed through the whole reaction process, and the reducing amine group is the key of the fabrication of Ag nanoplates not light.We have also successfully synthesized polyaniline/MnOx nanocomposite by a simple one-step method assisted by PVP with aniline and Mn(Ac)2·4H2O as the reductant and Ammonium persulfate(APS) as the oxidant. The samples were characterized by mang analysis methods. Cyclic voltammetric(CV) experiments show that the existence of MnOx in the composites improved the electroactivity and reversibility of PANI.;The conductivity of the composites decreased with the increasing of mole ratio of Mn(Ac)2·4H2O to aniline.
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