Ag-石墨烯纳米复合材料的室温制备及其结构分析  

Room-temperature synthesis and structure characterization of silver-graphene nanocomposites

作　　者：尹奎波 朱逸宇 韩宇龙[1] 赵安璞[1] 李萍萍 周明杰[1] 孙立涛[1] 

机构地区：[1]东南大学-FEI纳皮米中心,MEMS教育部重点实验室,东南大学电子科学与工程学院,江苏南京210096

出　　处：《电子显微学报》2011年第3期187-190,共4页Journal of Chinese Electron Microscopy Society

基　　金：国家本科生科研训练计划项目(SRTP,No.091028621);江苏省博士后资助计划(No.1001014B);中国博士后资助计划(20100481085);国家基础研究计划项目(No.2011CB707601和2009CB623702);国家自然科学基金资助项目(No.51071044,60976003和61006011);东南大学生物电子学国家重点实验室开放研究基金项目

摘　　要：在室温条件下利用水合肼将氧化石墨烯和AgNO3还原获得Ag-石墨烯纳米复合材料,并利用X射线光电子能谱(XPS),X射线衍射(XRD),X射线能谱(EDX)及高分辨透射电镜(HRTEM)等方法对制备的纳米复合材料进行分析。结果表明:Ag-石墨烯复合材料中石墨烯的含氧官能团数量大幅降低,氧化石墨烯已被还原为石墨烯;Ag纳米颗粒附着在石墨烯表面,Ag纳米颗粒的平均尺寸为25 nm,该复合材料表现出很强的表面增强拉曼效应,有望在非线性光学、传感器、电催化等领域获得广泛应用。Silver-graphene nanocomposites were fabricated at room-temperature based on graphene oxide and AgNO3 via a facile chemical reaction.The structure characterizations of Ag-graphene nanocomposites were studied by using XPS,XRD,TEM,and Raman,respectively.The number of oxygen functional groups on Ag-graphene sheets decreases dramatically,which implies that graphene oxide has been reduced to graphene.Ag nanoparticles adhering to the surface of graphene have an average grain size of about 25 nm.The Ag-graphene nanocomposites prepared in this study present a strong Surface Enhanced Raman Scattering effect,which have potential applications in sensors,nonlinear optics and electrocatalysis.

关 键 词：Ag-石墨烯纳米复合材料 TEM XRD XPS 拉曼光谱 

分 类 号：TB383.1[一般工业技术—材料科学与工程]