新型SERS基底的模板法制备及其检测应用

发布时间：2018-04-12 00:10

本文选题：SERS衬底 + 模板　；参考：《扬州大学》2017年硕士论文

【摘要】：三维SERS衬底具有优异的表面增强拉曼散射(SERS)性能,是当前SERS衬底研究的热点和难点。本论文通过采用新的制备方法,合成了三种新颖、高效、绿色的三维SERS衬底,研究了它们的SERS活性和增强机理,为探测农药和有机污染物提供了材料基础。本论文主要的创新结果如下:1.基于聚苯乙烯胶体球阵列模板,利用等离子体刻蚀和溅射技术,合成了多孔金@银空心球壳阵列。球壳表面具有均匀致密的纳米孔。这种既粗糙又多孔的周期性银球壳阵列展现了极强的SERS性能,并且信号一致性好。由于工艺简单,可以大尺度制备,有望在SERS传感领域得到实际应用。2.基于静电纺丝模板-置换反应策略,合成了由介多孔金纳米管构筑的三维薄膜。薄膜外观均匀,纳米尺度多介孔。重要的是,由于独特的结构,这种金纳米管薄膜具有优越的SERS性能。由于工艺简单、无污染、能大尺度制备,并且薄膜能够转移和随意裁剪,有望在SERS传感领域得到实际应用。3.基于水热法-CVD法,制备了海胆状的空心石墨烯球。这种微纳结构的三维石墨烯尺寸均匀,组成海胆状石墨烯的纳米棒是由纳米尺寸的石墨烯球组成。重要的是,这种石墨烯展现出很强的化学SERS增强能力。
[Abstract]:Three-dimensional SERS substrate has excellent surface enhanced Raman scattering (SERS) performance, which is a hot and difficult point in the research of SERS substrate.In this paper, three novel, efficient and green SERS substrates were synthesized by using a new preparation method. Their SERS activity and enhancement mechanism were studied, which provided a material basis for the detection of pesticides and organic pollutants.The main innovative results of this paper are as follows: 1.Based on the template of polystyrene colloidal sphere array, the porous gold / silver hollow spherical shell array was synthesized by plasma etching and sputtering techniques.The spherical shell surface has uniform and compact nano-pores.This kind of periodic silver spherical shell array, which is rough and porous, has excellent SERS performance and good signal consistency.Because of its simple process, it can be prepared on a large scale, which is expected to be applied in the field of SERS sensing.Based on the strategy of electrospinning template-replacement reaction, three-dimensional thin films were synthesized from porous gold nanotubes.The film has uniform appearance and multi-mesoporous nano-scale.Importantly, due to its unique structure, this gold nanotube film has superior SERS properties.Because the process is simple, pollution-free, can be prepared on a large scale, and the film can be transferred and cut at will, it is expected to be applied in the field of SERS sensing. 3.The hollow graphene spheres in the form of sea urchins were prepared by hydrothermal-CVD method.The nanorods are composed of nanometer-sized graphene spheres.Importantly, this graphene exhibits a strong chemical SERS enhancement ability.
【学位授予单位】：扬州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TB383.1;O657.37

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