层状自组装方法制备三维石墨烯复合材料

Synthesis and Characterization of 3D Graphene Nanocomposites via Layer-by-Layer Self-Assembly

石墨烯因具有制备方法简单、比表面积大以及生物共溶性好等优点,很多研究者将其应用于生物领域。在本工作中,我们以高比表面积的三维石墨烯作为载体,通过尝试不同的方法对其表面进行改性,然后负载银纳米粒子,制备出纳米银/石墨烯复合纳米材料。通过SEM,TEM以及Zeta电位仪进行一系列的表征和跟踪分析,摸索出制备银/石墨烯复合材料的最佳条件。该复合材料在抗菌领域具有广泛的应用前景。

Graphene possesses many advantages such as low cost,high surface area and biocompatibility,and it has received a great deal of attention of researchers in recent years. In this work,we use a 3D graphene with high special surface area as carrier to fabricate new Ag / graphene nanocomposites. To enhance the load capacity and uniformity of Ag nanoparticle,we tried several approaches to change the electronegativity and group on the surface of graphene. SEM,TEM and Zeta potential were used to characterize the morphology of the products. The result showed that the surface modified through layer-by-layer method is most effective,and the resulting Ag / graphene nanocomposites are more uniform,which are important in antibacterial field. The obtained Ag / graphene nanocomposites show great potential application in the field of antibacterial materials.