本文選題：銀納米材料 + 表面增強(qiáng)拉曼散射�。� 參考：《華東交通大學(xué)》2015年碩士論文

【摘要】：納米材料具有塊體材料所不具有的優(yōu)異的物理，化學(xué)和機(jī)械性能等，這使得納米材料在光學(xué)，電學(xué)，磁學(xué)，催化，生物傳感等方面具有大的應(yīng)用前景。然而，納米材料這些性能與其形貌，大小以及排列方式都有很大的關(guān)系，因此對這些因素與納米材料性能的關(guān)系進(jìn)行研究已成為目前科研的熱點(diǎn)。銀納米材料因其優(yōu)異的導(dǎo)電導(dǎo)熱性、良好的光學(xué)特性和優(yōu)良的表面等離子體共振性（SPR）等受到了科研工作者的廣泛關(guān)注，尤其是銀納米材料在表面增強(qiáng)拉曼散射（SERS）效應(yīng)上的優(yōu)良表現(xiàn)，使與其相關(guān)的研究至今仍是大家關(guān)注的熱點(diǎn)。因此對銀納米材料的可控制備及SERS性能的研究具有重要的意義。本論文通過不同的思路研究了銀納米材料形貌，組裝方法等對其SERS性能的影響及其應(yīng)用，主要工作分為以下幾部分： 1，為探究銀納米材料形貌對SERS性能的影響，通過化學(xué)還原法制備出了粒徑分布均勻的零維銀納米顆粒（Ag NPs），一維銀納米線（Ag NWs），二維銀納米片（Ag NSs）和三維銀納米立方（Ag NCs），采用水-油-氣三相界面組裝的方法得到多層銀納米陣列。結(jié)合X-射線衍射(XRD)和SERS分析結(jié)果我們探索了晶面對SERS的影響，并完善了化學(xué)增強(qiáng)在SERS中作用的理論基礎(chǔ)。 2，自組裝對銀納米材料的SERS性能影響的研究。通過水-油-氣三相界面組裝的方法，將散亂分布的一維Ag NWs有序化，制備出有序排列的Ag NWs薄膜，通過研究散亂分布，單層有序薄膜及多層有序薄膜的SERS性能，探索了排列方式對銀納米材料SERS性能的影響。進(jìn)一步對有序單層Ag NWs薄膜的農(nóng)藥殘留檢測性能進(jìn)行了測試，確定了其在食品安全分析方面的應(yīng)用前景。 3，金屬有機(jī)框架（MOF）由于其規(guī)整的空間排布規(guī)律、簡便可控的多維晶型、大小可調(diào)的孔徑，使其一直在氣體分離等方面有著廣泛的應(yīng)用前景。貴金屬與MOF材料的有效結(jié)合使其在新型催化劑的制備方面開辟了一個(gè)新的思路。以MOF材料為基底，，采用銀納米材料對其進(jìn)行改性同樣制備出了一種具有優(yōu)良SERS性能的Ag/ZIF-90復(fù)合薄膜，這種薄膜同時(shí)對目標(biāo)分子表現(xiàn)出優(yōu)良的檢測性能。 4，為進(jìn)一步提高銀納米材料基底在生物分子分析及檢測方面的應(yīng)用，通過構(gòu)筑一種超疏水界面基底，可以將所需檢測的分析物在超疏水基底表面濃縮，從而提供了一種超靈敏的檢測環(huán)境，相對于一般親水銀納米基底的SERS檢測性能有了進(jìn)一步提升。
[Abstract]:Nanomaterials have excellent physical, chemical and mechanical properties that bulk materials do not, which makes nanomaterials have great application prospects in optics, electricity, magnetism, catalysis, biosensor and so on. However, these properties of nanomaterials are closely related to their morphology, size and arrangement. Therefore, the research on the relationship between these factors and the properties of nanomaterials has become a hot research topic at present. Due to its excellent thermal conductivity, good optical properties and excellent surface plasmon resonance (SPR), silver nanomaterials have attracted wide attention from researchers. Especially, the excellent performance of silver nanomaterials in surface-enhanced Raman scattering (SERS) effect makes the research related to SERS still a hot topic. Therefore, it is of great significance to study the controllable preparation and SERS properties of silver nanomaterials. In this paper, the effects of morphology and assembly methods of silver nanomaterials on SERS properties and their applications are studied in different ways. The main work is as follows: 1. In order to explore the influence of silver nano-materials morphology on SERS properties, By chemical reduction method, the zero-dimensional silver nanoparticles (Ag-NPsN), one-dimensional silver nanowires (Ag-NWsN), two-dimensional silver nanowires (Ag NSsS) and three-dimensional silver nanocrystalline (Ag NCsN) have been prepared by chemical reduction method. The method of water-oil-gas three-phase interface assembly has been used to obtain silver nanocrystals. To multilayer silver nanoarrays. In combination with the results of X-ray diffraction (XRD) and SERS analysis, we have explored the effect of crystal surface on SERS and perfected the theoretical basis of chemical reinforcement in SERS. 2. The effect of self-assembly on the SERS properties of silver nanomaterials has been studied. The one-dimensional Ag NWs films with scattered distribution were ordered by the method of water-oil-gas three-phase interface assembly, and the SERS properties of the scattered, single-layer ordered films and multilayer ordered films were studied. The effect of arrangement on SERS properties of silver nanomaterials was investigated. The pesticide residue detection performance of ordered monolayer Ag NWs thin films was further tested, and its application prospect in food safety analysis was determined. 3. Due to its regular spatial arrangement, MOFF is a simple and controllable multidimensional crystal form. Because of its adjustable pore size, it has been widely used in gas separation. The effective combination of noble metals and MOF materials has opened up a new idea in the preparation of new catalysts. A kind of Ag / ZIF-90 composite film with excellent SERS properties was also prepared by the modification of silver nanomaterials on MOF substrates. In order to further improve the application of silver nanomaterials in biomolecular analysis and detection, a superhydrophobic interface substrate was constructed. The analysis can be concentrated on the surface of superhydrophobic substrate, which provides an ultra-sensitive detection environment, and improves the performance of SERS detection compared with the general silver hydrophilic nano-substrates.
【學(xué)位授予單位】：華東交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TB383.1;O657.37

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本文編號：1998203