摘要：纳米级结构的材料简称为纳米材料(nanometer material)，是指其结构单元的尺寸介于1纳米～100纳米范围之间的新型材料。因为它尺寸的大小，所以拥有其他材料所没有的性质。目前纳米技术在全世界的研究范围内仍处于萌芽阶段，多功能纳米材料的研究一直是大热门，其应用范围可以覆盖生物、传感器、半导体还有太阳能等领域。本实验的主要目的是制备出一种新型的多功能纳米材料，这种材料是以石墨烯量子点（GQDs）为基础，首先将三个不同浓度的甘氨酸连接到石墨烯量子点的表面，再将Ag纳米粒子分别连接到GQDs/Glycine表面，得到GQDs/Glycine/Ag复合材料。分别采用荧光光谱和紫外光谱对GQDs/Glycine/Ag复合材料进行表征。此外，以结晶紫溶液作为探针分子，采用表面增强拉曼光谱对该材料进行表征，结果表明相对于单独的GQDs和单独的Ag，该复合材料基于二者的协同作用可作为一种较好的增强基底在拉曼光谱检测领域得到广泛的应用。73761

毕业论文关键词：石墨烯量子点；银纳米粒子；甘氨酸；荧光光谱法；拉曼光谱

Assembly of nanomaterials and its performance study of GQDs/Glycine/Ag

Abstract: In the recent several years, the science and technology development is more and more quick, the unceasing floor brush newly knowledge content and quantity, among this, because of the actual production demand increase, the multi-purpose nanomaterials research are more and more popular, the application scope may cover the biology, the sensor, the semiconductor also has domains and so on solar energy。This experimental main purpose prepares one new multi-purpose nanomaterials, this material is take the graphite alkene quantum spot as a foundation, first connects three different density glycine a graphite alkene quantum surface, again separately connects a Ag nanometer granule the GQDs/Glycine surface, carries on the fluorescence spectrum, the ultra-violet spectrograph attribute determination separately to above several kind of systems, carries on the Laman spectrum by the gentian violet solution as the basis the attribute to determine its enhancement degree。Again will obtain the data with the origin software mapping, the contrast result will obtain the glycine and a silver nanometer granule to the fluorescence, ultraviolet and the Laman spectrum influence。Key words: Graphene quantum dot; Silver nanoparticles; Glycine; Fluorescence spectroscopy; Raman

目录

1、前言 5

1。1石墨烯量子点的介绍 5

1。1。1石墨烯量子点的研究现状 7

1。1。2石墨烯量子点常用的制备方法 8

1。1。3石墨烯量子点的几种特性 9

1。2甘氨酸的介绍 9

1。3银纳米粒子的介绍 10

1。4荧光光谱法的介绍 11

1。5紫外光谱法的介绍 11

1。5。1紫外光谱法的介绍 11

1。5。2紫外光谱仪的介绍 11

1。6拉曼光谱法的介绍 12

1。7课题的目的和意义 12

2、实验部分 13

2。1试剂和仪器 13

2。1。1试剂 13

2。1。2仪器 13

2。2试剂的合成 13