水热法石墨烯量子点的制备及其表征
关键词： 石墨烯 量子点 荧光 水热法毕业设计说明书（论文）外文摘要
Title Preparation and Characterization of a Graphene Quantum Dots
Abstract
Quantum Dots（QDs）are bright, photo-stable and have a broad excitation spectrum but a narrow emission at wavelengths controlled by the size and the composition of the material. QDs have become one of the most attractive areas of current research and a new kind of interdisciplinary science. Water-soluble quantum dots(QDs) with high photo-luminescence quantum efficiency have shown great potentials in photonic crystals, thin-film light-emitting devices, and especially biological labels. Recently, valuable progress has been achieved in water-soluble QDs as fluorescent biological labels. Relative to the metal quantum dots, graphene QDs have no toxic effects, low harm to the environment, low-cost preparation, witch represents the light-emitting nano-particle research into a new stage. In this study, graphene QDs have been synthesized by hydrothermal methods and characterized with Raman and TEM, IR, fluorescence and other analytical tools to study the structural characteristics and optical property of graphene QDs.
Keywords: graphene, quantum dots, fluorescence, hydrothermal method
目 录
1 绪论 1
1.1 石墨烯 1
1.1.1 石墨烯的结构 1
1.1.2 石墨烯的性能 2
1.1.3 石墨烯的制备 2
1.2 量子点 2
1.2.1 量子点的性质 3
1.2.2 量子点的制备 4
1.3 石墨烯量子点 5
1.3.1 石墨烯量子点制备的意义 5
1.3.2 石墨烯量子点的性质 5
1.3.3 石墨烯量子点的应用 5
1.4 本课题的意义、目的及主要研究内容 6
2 实验部分 6
2.1 实验药品 6
2.2 实验仪器 6
2.3 实验过程 7
2.3.1 石墨烯量子点的制备 7
2.3.2 改变实验条件制备石墨烯量子点 7
2.3.3 还原GO制备石墨烯量子点 8
2.4 性能测试 8
2.4.1 荧光测试 8
2.4.2 Raman测试 8
2.4.3 TEM测试 8
2.4.4 XRD测试 9
2.4.5 IR测试 9
2.5 结果与讨论 9
2.5.1 荧光测试结果分析 9
2.5.2 Raman测试结果分析 14
2.5.3 TEM测试结果分析 16