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Efficient Preparation and Characterization of Silver-Polyphenylsilane Nanocomposites

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Silver-polyphenylsilane nanocomposites have been effectively prepared by the dehydrocoupling reaction of phenylsilane (PS, PhSiH3) to polyphenylsilane (PPS, [PhSiH]n) in the presence of silver nitrate. The one-step reduction of Ag(+1) nitrate to stable Ag(0) nanoparticles is mediated by PS, resulting in the formation of Ag-PPS composites. The Ag-PPS nanocomposites were characterized by various analytical techniques such as XRD, TEM, FE-SEM, and solid-state UV-vis. TEM and FE-SEM data clearly show that the silver nanoparticles with the size of <20 nm are well dispersed throughout the PPS matrix in the nanocomposites. XRD patterns are consistent with those for fcc crystalline silver. The size of silver nanoparticles increased with increasing the relative molar concentration of silver salts added. It was found that in the absence of PS, most of the silver nanoparticles undergo macroscopic precipitation by aggregation, indicating that PPS is essential to stabilize the silver nanoparticles by the complexation of Si–H to the silver metal centers.
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Keywords: CATALYSIS; COORDINATION; CROSS-LINKING; DEHYDROCOUPLING; NANOCOMPOSITES; PHENYLSILANE; POLYMER STABILIZER; POLYPHENYLSILANE; REDUCTION; SILVER NANOPARTICLES; SILVER NITRATE; THERMAL STABILITY

Document Type: Research Article

Publication date: 2010-05-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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