›› 2014, Vol. 23 ›› Issue (12): 128101-128101.doi: 10.1088/1674-1056/23/12/128101

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Liquid-phase and solid-phase microwave irradiations for reduction of graphite oxide

赵娜a, 文宸宇a, 张卫a, 吴东平a, 张志滨b, 张世理b   

  1. a State Key Laboratory of ASIC and System, Fudan University, Shanghai 200433, China;
    b Solid-State Electronics, The Ångström Laboratory, Uppsala University, P. O. Box 534, 75121 Uppsala, Sweden
  • 收稿日期:2014-02-24 修回日期:2014-06-21 出版日期:2014-12-15 发布日期:2014-12-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61176090) and the National Science and Technology Project 02, China (Grant No. 2013ZX02303-004).

Liquid-phase and solid-phase microwave irradiations for reduction of graphite oxide

Zhao Na (赵娜)a, Wen Chen-Yu (文宸宇)a, Zhang David Wei (张卫)a, Wu Dong-Ping (吴东平)a, Zhang Zhi-Bin (张志滨)b, Zhang Shi-Li (张世理)b   

  1. a State Key Laboratory of ASIC and System, Fudan University, Shanghai 200433, China;
    b Solid-State Electronics, The Ångström Laboratory, Uppsala University, P. O. Box 534, 75121 Uppsala, Sweden
  • Received:2014-02-24 Revised:2014-06-21 Online:2014-12-15 Published:2014-12-15
  • Contact: Wu Dong-Ping E-mail:dongpingwu@fudan.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61176090) and the National Science and Technology Project 02, China (Grant No. 2013ZX02303-004).

摘要: In this paper, two microwave irradiation methods: (i) liquid-phase microwave irradiation (MWI) reduction of graphite oxide suspension dissolved in de-ionized water and N, N-dimethylformamide, respectively, and (ii) solid-phase MWI reduction of graphite oxide powder have been successfully carried out to reduce graphite oxide. The reduced graphene oxide products are thoroughly characterized by scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectral analysis, Raman spectroscopy, UV-Vis absorption spectral analysis, and four-point probe conductivity measurements. The results show that both methods can efficiently remove the oxygen-containing functional groups attached to the graphite layers, though the solid-phase MWI reduction method can obtain far more efficiently a higher quality-reduced graphene oxide with fewer defects. The I(D)/I(G) ratio of the solid-phase MWI sample is as low as 0.46, which is only half of that of the liquid-phase MWI samples. The electrical conductivity of the reduced graphene oxide by the solid method reaches 747.9 S/m, which is about 25 times higher than that made by the liquid-phase method.

关键词: microwave irradiation, solid-phase, liquid-phase, reduced graphene oxide

Abstract: In this paper, two microwave irradiation methods: (i) liquid-phase microwave irradiation (MWI) reduction of graphite oxide suspension dissolved in de-ionized water and N, N-dimethylformamide, respectively, and (ii) solid-phase MWI reduction of graphite oxide powder have been successfully carried out to reduce graphite oxide. The reduced graphene oxide products are thoroughly characterized by scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectral analysis, Raman spectroscopy, UV-Vis absorption spectral analysis, and four-point probe conductivity measurements. The results show that both methods can efficiently remove the oxygen-containing functional groups attached to the graphite layers, though the solid-phase MWI reduction method can obtain far more efficiently a higher quality-reduced graphene oxide with fewer defects. The I(D)/I(G) ratio of the solid-phase MWI sample is as low as 0.46, which is only half of that of the liquid-phase MWI samples. The electrical conductivity of the reduced graphene oxide by the solid method reaches 747.9 S/m, which is about 25 times higher than that made by the liquid-phase method.

Key words: microwave irradiation, solid-phase, liquid-phase, reduced graphene oxide

中图分类号:  (Specific materials: fabrication, treatment, testing, and analysis)

  • 81.05.-t
81.05.U- (Carbon/carbon-based materials) 81.05.ue (Graphene)