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Graphene—Metal Particle Nanocomposites

机译:石墨烯—金属颗粒纳米复合材料

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摘要

Graphene sheets, which possess unique nanostructure and a variety of fascinating properties, can be considered as promising nanoscale building blocks of new composites, for example, a support material for the dispersion of nanoparticles. Here, we present a general approach for the preparation of graphene—metal particle nanocomposites in a water—ethylene glycol system using graphene oxide as a precursor and metal nanoparticles (Au, Pt and Pd) as building blocks. These metal nanoparticles are adsorbed on graphene oxide sheets and play a pivotal role in catalytic reduction of graphene oxide with ethylene glycol, leading to the formation of graphene—metal particle nanocomposites. The typical methanol oxidation of graphene—Pt composites in cyclic voltammograms analyses indicated its potential application in direct methanol fuel cells, bringing graphene—particle nanocomposites close to real technological applications.
机译:具有独特的纳米结构和各种引人入胜的性能的石墨烯片材可以被认为是新型复合材料的有希望的纳米级构建基块,例如,用于分散纳米颗粒的载体材料。在这里,我们介绍了使用氧化石墨烯作为前驱体和金属纳米颗粒(Au,Pt和Pd)作为结构单元,在水-乙二醇系统中制备石墨烯-金属颗粒纳米复合材料的一般方法。这些金属纳米颗粒吸附在氧化石墨烯片上,并在用乙二醇催化还原氧化石墨烯方面起关键作用,导致形成石墨烯-金属颗粒纳米复合材料。循环伏安分析中典型的石墨烯-Pt复合材料的甲醇氧化表明,其在直接甲醇燃料电池中的潜在应用,使石墨烯-颗粒纳米复合材料接近实际技术应用。

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