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Graphene nanosheets decorated with Pd,Pt,Au,and Ag nanoparticles:Synthesis,characterization,and catalysis applications

查看全文 作  者:HE [1]HongKun;GAO [1]Chao 高影响力作者 机构地区:[1]MOE Key Laboratory of Macromolecular Synthesis and Functionalization,Department of Polymer Science and Engineering,Zhejiang University,Hangzhou 310027,China高影响力机构 出  处:《Science China Chemistry》索引2011年第54卷第2期,共8页高影响力期刊 基  金:supported by the National Natural Science Foundation of China (50773038& 20974093);National Basic Research Program of China (973 Program,2007CB936000);Qianjiang Talent Foundation of Zhejiang Province (2010R10021);the Fundamental Research Funds for the Central Universities (2009QNA4040);the Foundation for the Author of National Excellent Doctoral Dissertation of China (200527) 摘  要:We report that noble metal nanopartcles (Pd,Pt,Au,and Ag) decorated-graphene nanosheets can be synthesized with the template of graphene oxide by a one-pot solution-based method.The resulting hybrid materials are characterized by transmission electronic microscopy,energy dispersive X-ray spectroscopy,scanning electronic microscopy,atomic force microscopy,X-ray diffraction,and Raman spectroscopy,which demonstrate that the metal nanoparticles have been uniformly deposited on the surfaces of graphene nanosheets.Our results in turn verify that the carboxylic groups of graphene oxide are statistically distributed on its whole sheet surface rather than just at its edges.The graphene-metal nanohybrids can be used as catalysts in the reduction of potassium hexacyanoferrate(III) with NaBH4 in aqueous solution.Our results suggest that graphene is a superior substrate to support metals for applications in the heterogeneous catalysis. 关 键 词:银纳米粒子 氧化石墨 催化应用 合成方法 贵金属 装饰 透射电子显微镜 扫描电子显微镜
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