铜-碳纳米复合物的制备结构及光学性能

摘要本文首先通过生物质水热碳化法，采用葡萄糖、果糖、抗坏血酸、柠檬酸分别作为碳源制备纯碳微纳米球。对比分析不同碳源对碳球的结构、形貌以及产率的影响，筛选出适合制备铜-碳纳米复合物的碳源。然后，将化学还原法和水热碳化法结合，以葡萄糖为碳源，以CuCl2•2H2O为铜源，控制配料比、反应时间等实验条件，探究能够使铜纳米颗粒均匀地嵌入碳质材料中的最佳反应参数。另外，在上述最佳参数下，选用三辛胺为软模板，利用表面活性剂辅助合成“嵌入式”铜-碳纳米复合空心球。采用红外光谱（IR）、紫外可见吸收光谱（UV-vis）、拉曼光谱(Raman)、X-射线粉末衍射仪（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）等测试设备对复合物成分、结构、形貌进行表征。以合成的“嵌入式”铜-碳纳米复合空心球为表面增强拉曼散射（SERS）基底对4-巯基吡啶探针分子有明显的表面拉曼散射增强效果。78765

毕业论文关键词水热法碳球铜-碳复合物光学性能

毕业设计说明书外文摘要

Title Hydrothermal synthesis of Cu-carbon nano-composites and their optical properties

Abstract

Carbon spheres were obtained from glucose, fructose, ascorbic acid, citric acid respectively by hydrothermal carbonization process of biomass。 The structure, morphology, and the yield of carbon spheres influenced by different carbon precursors were compared to select suitable precursors to prepare carbon spheres。 By a combination of chemical reduction and hydrothermal carbonization method, the burden of glucose and CuCl2•2H2O and reaction time were changed to study the optimum parameters of preparing Cu-carbon composites in which the copper nanoparticles embedded uniformly in the carbonaceous。 The hybrid hollow spheres in which the copper nanoparticles embedded in the carbonaceous were synthesized using trioctylamine (TOA) as soft template under the optimum parameters。 The composition, microstructure, morphology of obtained samples were characterized by IR, UV-vis, XRD, Raman, TEM and SEM。 The result of surface enhanced Raman scattering (SERS) verified that the hybrid hollow spheres in which the copper nanoparticles embedded in the carbonaceous exhibit enhancement performance in enhanced SERS signals for 4-Mercaptopyridine。

Keywords Hydrothermal synthesis Carbon spheres Carbon-copper nano composites Optical properties

1 绪论 1

1。1 碳纳米材料 1

1。2 金属-碳纳米复合材料 2

1。3 铜-碳纳米复合材料 4

1。4 本课题的研究意义 5

1。5 本课题的工作内容 5

2 纯碳球的制备 7

2。1 实验试剂及仪器 7

2。2 实验步骤 7

2。3 产物表征 7

2。4 本章小结 10

3 铜-碳纳米复合物的制备 11

3。1 实验试剂及仪器 11

3。2 实验步骤 11

3。3 不同配料比制备铜-碳复合物及其表征 12

3。4 不同反应时间制备“嵌入式”铜-碳纳米复合物及其表征铜-碳纳米复合物的制备结构及光学性能:http://www.youerw.com/cailiao/lunwen_90854.html