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摘要：氧化石墨烯由于特殊的结构，在电学、光学及热导性能等方面都有很多优异性。但当大量的石墨烯片在一起时，很容易由于范德华力吸引而重新聚集在一起，重新回到石墨状态。故本文希望通过金属离子修饰氧化石墨烯，能形成稳定的石墨烯结构，在储能方面和电池方面能更有效的利用。本文采用改进的Hummers法制备氧化石墨烯（GO），然后将金属离子吸附到GO表面，形成功能化的氧化石墨烯（GO-M）。通过紫外吸收光谱、荧光光谱和X射线衍射光谱（XRD）对所得产物进行了初步表征。进而研究了金属离子浓度和种类对氧化石墨烯光谱性能的影响。结果表明，金属离子的引入，对GO的荧光没有明显影响，在紫外吸收方面除了个别离子的个别浓度有明显差异外，其他离子的其他浓度并无明显差别。而通过XRD表征，证明吸附金属离子的氧化石墨烯层间距增大。35331
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毕业论文关键词：修饰；氧化石墨；制备；表征
Preparation of graphene oxide modified by different metal ions
Abstract: Because of the special structure of graphene oxide, there are many advantages in the electrical, optical and thermal conductivity of graphene.. But when a large number of graphene sheets together, it is easy to attract and re gathered together due to van Edward force, resulting in re returning to graphite state. It is hoped that graphene oxide can form stable graphene structure by metal ion modified graphene oxide, and can be used more effectively in energy storage and battery. In this paper, using a modified Hummers method for the preparation of graphene oxide (GO) and ultrasonic stripping graphene oxide nano preparation of layered structure, metal ions are adsorbed onto the surface of go, formation of functionalized graphene oxide GO-M. Study the performance of different concentration and different metal ion modification of graphene oxide is improved, by UV absorption spectra, fluorescence spectra and X-ray diffraction spectra (XRD) were used to characterize the chemical structure. The results show that metal ion doping, in the fluorescence detection of no significant difference, in the ultraviolet absorption in addition to the inpidual concentrations of inpidual ions have obvious difference, other ions other concentration had no significant difference. The graphene oxide layer spacing of graphene oxide layer is increased, so the structure is more stable with XRD.
Keywords: Modification; graphite oxide；preparation；characterization
目录
1. 引言 1
1.1 石墨烯的简介 2
1.1.1石墨烯的发现及其结构 3
1.1.2 石墨烯的制备及应用价值 4
1.2氧化石墨烯简介[5] 4
1.2.1 氧化石墨烯的结构和特征 5
1.2.2 共价法修饰氧化石墨烯[3-5] 5
1.2.3 非共价法修饰氧化石墨烯[9] 6
1.3 石墨烯复合材料在能源领域的应用 6
1.3.1锂离子电池 6
1.3.2 燃料电池电极催化剂载体 7
1.3.3 光伏电池 7
1.4 石墨烯的储能应用-燃料电池 7
1.4.1石墨烯修饰的燃料电池[16] 8
1.4.2石墨烯作为燃料电池基底[18] 8
1.4.3石墨烯作为非共价功能化聚合物 9
1.4.4石墨烯作为ORR催化剂 10
1.5 石墨烯的储能应用-太阳能电池 11
1.5.1 在电池活性层作为传输材料的边缘石墨烯 11
1.5.2 功能化石墨烯 12
1.5.3 基底平面官能化氧化石墨烯中的PSCs有孔提取层 13
1.6 选题意义及主要研究内容 14
2. 实验部分 16