P28 固-液系超音波反応場を用いたAg/グラフェンナノコンポジットの合成と評価(ポスターセッション)

概要

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Recently, graphene has attracted tremendous research interest due to its unique mechanical, electrical and thermal properties caused by a two-dimensional, single-atom-thick structure of sp^2-bonded carbon atoms. In the past few years, several methods, such as chemical vapor deposition and chemical reduction of graphene oxide, have been used to prepare graphene sheets. It is known that chemical reactions, stirring, dispersion and exfoliation are promoted by ultrasound-cavitation. In this work, Graphite Oxide (GO) and Ag/graphene nanocomposites were synthesized by solid-liquid sonochemical reactions easily and briefly. GO was synthesized by means of Hummers method using sonication or stirring. From XRD patterns and FT-IR spectra, the oxidation of graphite was promoted by chemical and physical effects of ultrasound. Ag/graphene nanocomposites were synthesized from GO and silver oxide by sonication. UV-vis spectra showed the peaks of graphene oxide and Ag nanoparticle plasmon resonance absorption. EDX images and electron diffraction patterns confirmed Ag nanoparticles were decorated on graphenesheets by ultrasound. Using sonication, GO and Ag/graphene nanocomposites could be synthesized easily in short time.
日本ソノケミストリー学会の論文
2013-10-25