基于电喷雾离子化技术的贵金属纳微结构的制备与研究

发布时间：2018-05-24 07:05

本文选题：电喷雾离子化 + 贵金属　；参考：《吉林大学》2017年博士论文

【摘要】：本论文致力于研究电喷雾离子化技术在贵金属纳微结构制备中的应用及其作用机理。通过改变宏观的外部合成条件来精确地控制贵金属纳微结构的制备与组装过程,最终实现贵金属纳微结构的可控制备。同时,通过电子显微学技术及质谱检测技术等科学研究手段对样品进行了相关表征,研究了不同合成条件对贵金属纳微结构的影响。另外,本论文尝试了基于电喷雾离子化技术制备螺旋状的金纳米组装体,并研究了电调控下的Au与手性分子之间的相互作用。第一章介绍了有关贵金属纳微结构的制备方法和电喷雾离子化相关的应用背景及研究现状;第二章介绍了基于喷雾辅助产生的微液滴中金纳米晶的制备,研究了温度、前驱体浓度和外加电压对金纳米晶的形貌和尺寸的影响,并尝试对各类合成条件对形貌和尺寸的影响机理做出科学的解释;第三章介绍了采用电喷雾离子化技术可控地在氧化铜纳米线上组装银的纳米颗粒,制备出了蒲公英状半导体-金属复合分级纳米结构,并研究了离子化的金属前驱体由离子状态到单质状态的转变过程;第四章介绍了基于电喷雾离子化技术制备螺旋状的金纳米组装体的研究,并对该结构在表面增强拉曼光谱中的应用做了初步探索,简要阐述静电调控金属-手性分子相互作用的一般过程;第五章为结论与展望。本论文对上述基于电喷雾离子化技术的贵金属纳微结构的制备条件及形成过程进行了详细的讨论,为进一步扩展电喷雾离子化技术在纳微结构组装方面的应用奠定了研究基础。
[Abstract]:In this paper, the application and mechanism of electrospray ionization in the preparation of noble metal nanostructures are studied. The preparation and assembly process of noble metal nanostructures can be precisely controlled by changing the macroscopical synthesis conditions, and the controllable preparation of noble metal nanostructures can be achieved. At the same time, the samples were characterized by means of electron microscopy and mass spectrometry, and the effects of different synthesis conditions on the nanostructures of noble metals were studied. In addition, the helical au nanoparticles were prepared by electrospray ionization technique, and the interaction between au and chiral molecules was studied. In chapter 1, the preparation methods of nanocrystalline nanocrystals of noble metals and the application background and research status of electrospray ionization are introduced. In chapter 2, the preparation of gold nanocrystals in droplets based on spray assisted generation is introduced, and the temperature is studied. The influence of precursor concentration and applied voltage on the morphology and size of au nanocrystalline was studied. In chapter 3, the silver nanoparticles were assembled on copper oxide nanowires by electrospray ionization technology, and the dandelion semiconductor / metal composite nanostructures were prepared. The transition process from ionic state to simple state of metal precursor was studied. In chapter 4, the preparation of spiral gold nanowires based on electrospray ionization was introduced. The application of the structure in surface-enhanced Raman spectroscopy is explored, and the general process of electrostatic regulation of metal-chiral interaction is briefly described. Chapter 5 is the conclusion and prospect. In this paper, the preparation conditions and formation process of noble metal nanostructures based on electrospray ionization technology are discussed in detail, which lays a foundation for further research on the application of electrospray ionization technology in nanostructure assembly.
【学位授予单位】：吉林大学
【学位级别】：博士
【学位授予年份】：2017
【分类号】：O614.123

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