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近年来,氧化石墨烯/金银纳米粒子复合材料由于其优异的表面增强拉曼散射(SERS)性能引起了人们极大的关注,在污染物检测、化学传感和癌症诊断等领域具有重要的应用价值。本文综述了氧化石墨烯片层上修饰金银纳米粒子、氧化石墨烯包覆金银纳米粒子、氧化石墨烯附着在金银纳米粒子层三种氧化石墨烯/金银纳米粒子复合材料的制备方法,对其SERS效应进行了详细介绍。SERS研究表明,结合了金银纳米粒子与氧化石墨烯两种材料各自在SERS研究与应用中的优势,氧化石墨烯/金银纳米粒子复合材料的SERS性能比单纯金银纳米粒子更加优异。氧化石墨烯在其中起到了化学增强、分子富集、钝化保护、荧光猝灭的重要作用。氧化石墨烯/金银纳米粒子复合材料在表面增强拉曼光谱中具有广阔的应用前景。
In recent years, graphene oxide / gold-silver nanoparticle composites have drawn great attention due to their excellent surface-enhanced Raman scattering (SERS) properties and are of great importance in the fields of pollutant detection, chemical sensing and cancer diagnosis Value. In this paper, the preparation methods of graphene oxide / gold-silver nanoparticle composites with gold-silver nanoparticles modified on graphene oxide sheets, gold-silver nanoparticles coated with graphene oxide and graphene oxide attached to gold-silver nanoparticle layers , Has carried on the detailed introduction to its SERS effect. The results of SERS show that the SERS properties of graphene oxide / gold-silver nanoparticle composites are superior to those of gold-silver nanoparticles alone, combining the advantages of both gold-silver nanoparticle and graphene oxide in SERS research and application. Graphene oxide plays an important role in chemical strengthening, molecular enrichment, passivation protection and fluorescence quenching. Graphene oxide / Au-Ag nanoparticle composites have broad application prospects in surface-enhanced Raman spectroscopy.