高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (09): 1902-1907.doi: 10.3969/j.issn.0251-0790.2012.09.005

• 研究论文: 无机化学 • 上一篇    下一篇

氧化石墨烯的可控还原及结构表征

杨旭宇1,2, 王贤保1, 李静1, 杨佳1, 万丽1, 王敬超1   

  1. 1. 湖北大学材料科学与工程学院, 教育部功能材料绿色制备与应用重点实验室, 武汉 430062;
    2. 湖北汽车工业学院材料工程系, 十堰 420000
  • 收稿日期:2012-01-30 出版日期:2012-09-10 发布日期:2012-08-14
  • 通讯作者: 王贤保,男,博士,教授,博士生导师,主要从事碳纳米材料及其复合材料的可控制备、性能及应用研究.E-mail:wxb@hubu.edu.cn E-mail:wxb@hubu.edu.cn
  • 基金资助:

    国家"九七三"计划前期研究专项(批准号: 2010CB234606); 高等学校博士学科点专项基金(批准号: 20114208110005)和湖北省教育厅项目(批准号: D20111002, B20111802)资助.

Controllable Reduction and Structural Characterizations of Graphene Oxides

YANG Xu-Yu1,2, WANG Xian-Bao1, LI Jing1, YANG Jia1, WAN Li1, WANG Jing-Chao1   

  1. 1. Faculty of Materials Science and Engineering, Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Ministry of Education, Hubei University, Wuhan 430062, China;
    2. Department of Materials Engineering, Hubei University of Automotive Technology, Shiyan 420000, China
  • Received:2012-01-30 Online:2012-09-10 Published:2012-08-14
  • Contact: Xianbao Wang E-mail:wxb@hubu.edu.cn

摘要:

采用氧化还原法, 通过控制还原时间制备了不同还原程度的石墨烯; 用红外光谱、 紫外光谱、 拉曼光谱、 X射线衍射、 热重分析、 电导率测量等多种手段系统研究了不同还原程度石墨烯的结构与性能; 采用透射电子显微镜、 扫描电子显微镜和原子力显微镜比较了氧化石墨烯和石墨烯的形貌. 结果表明, 随着还原程度的增加, 石墨烯中含氧基团减少, 紫外吸收峰逐渐红移, D带与G带的强度比增加, 热稳定性和导电性提高. 微观结构表征说明石墨烯比氧化石墨烯片的厚度增加, 褶皱增多.

关键词: 石墨烯, 氧化石墨烯, 还原

Abstract:

Graphene with different reduction degree was prepared by controling the reduction time. The structures and properties of graphene were characterized systematically by Fourier transform infrared spectroscopy(FTIR), UV-Vis spectroscopy, Raman spectroscopy, X-ray diffrations(XRD), thermo-gravimetric analysis(TGA) and electrical conductivity measurements. Moreover, transmission electron microscopy(TEM), scanning electron microscopy(SEM) and atomic force microscopy(AFM) were employed to compare the morphologies of graphene oxide with those of graphene. The results showed that with the increase of reduction time, the oxygen-containing groups were removed gradually and the absorption peak of ultraviolet displayed a gradual red-shift, besides, the ratio of the Raman intensities(ID/IG) of graphene increased markedly, and the thermal stability was improved significantly. The characterization of microstructures reveals that graphene consists of thicker layer structures and more crumples than those of graphene oxide.

Key words: Graphene, Graphene oxide, Reduction

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