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无机材料学报

无机材料学报 ›› 2011, Vol. 26 ›› Issue (7): 707-710.DOI: 10.3724/SP.J.1077.2011.00707 CSTR: 32189.14.SP.J.1077.2011.00707

• 研究论文 • 上一篇    下一篇

水溶性石墨烯及其高导电率薄膜的制备与表征

陈 操1, 翟文涛1, 郑文革1, 卢叮叮1, 汪 璟1, 沈 斌1, 张好斌2   

  1. (1. 中国科学院 宁波材料技术与工程研究所, 高分子与复合材料事业部, 宁波315201; 2. 北京化工大学 材料科学与工程学院, 北京 100029)
  • 收稿日期:2010-09-06 修回日期:2010-11-16 出版日期:2011-07-20 网络出版日期:2011-06-20
  • 作者简介:陈 操(1986-), 男, 硕士研究生. E-mail: chencao@nimte.ac.cn

Preparation and Characterization of Water-soluble Graphene and Highly Conducting Films

CHEN Cao1, ZHAI Wen-Tao1, ZHENG Wen-Ge1, LU Ding-Ding1, WANG Jing1, SHEN Bin1, ZHANG Hao-Bin2   

  1. (1. Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; 2. College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China)
  • Received:2010-09-06 Revised:2010-11-16 Published:2011-07-20 Online:2011-06-20

PDF (PC)

4535

被引次数

24 | 4

摘要： 石墨烯表面不含含氧基团, 这导致石墨烯在水中很难分散. 制备具有水溶性的石墨烯是一个研究焦点. 本研究采用氧化石墨低温真空膨胀的方法, 通过调控氧化石墨烯的含氧基团数目, 制备具有水溶解性的石墨烯材料. AFM测试表明所制备的水溶性石墨烯的最小片层厚度约为1.7 nm, 尺寸为1.0 μm. 分散实验结果表明; 所制备的石墨烯在不添加任何表面活性剂的中性水溶液情况下可以稳定分散, 其浓度为0.07 mg/mL; 此外, 电性能测试表明: 石墨烯薄膜材料的导电率可高达1000 S/m, 比通过非共价键石墨烯制备的薄膜导电率要高.

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关键词: 石墨烯, 薄膜, 电学性质

Abstract: Graphene has no oxygen groups on its surface, resulting in a poor dispersion in water. The synthesis of graphene with high water solubility is popular nowadays. In this study, the oxygen content of graphite oxide was adjusted by a low-temperature and high-vacuum expansion process, the resultant graphene sheets exhibited the smallest thickness of about 1.7 nm and size of 1.0 um. The results indicated that prepared graphene could be stable in neutral aqueous solution without surfactant, and the solubility of the water-soluble graphene was 0.07 mg/mL. In addition, the electrical conductivity of the graphene film of around 1000 S/m was higher than many reported noncovalent graphene films.

Key words: graphene, film, electrical properties

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