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材料工程  2019, Vol. 47 Issue (4): 56-63    DOI: 10.11868/j.issn.1001-4381.2018.000478
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
高浓度石墨烯水分散液的制备与表征
王晨, 燕绍九, 南文争, 王继贤, 彭思侃
中国航发北京航空材料研究院 石墨烯及应用研究中心, 北京 100095
Preparation and characterization of high concentration graphene aqueous dispersion
WANG Chen, YAN Shao-jiu, NAN Wen-zheng, WANG Ji-xian, PENG Si-kan
Research Center of Graphene Applications, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China
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摘要 利用高压均质液相剥离法,以鳞片石墨为原料,水为介质,制备高浓度石墨烯水分散液。采用紫外可见光谱研究表明活性剂浓度、高压均质压力和循环次数对石墨烯水分散液浓度CG的影响。通过拉曼光谱、扫描电镜、透射电镜、激光粒度仪分析水分散液中石墨烯的结构和形貌。结果表明:通过调节各工艺参数,获得了浓度为324.3mg·L-1的石墨烯水分散液,所得浓度是超声液相剥离法的10倍;石墨烯水分散液中石墨烯缺陷少、厚度薄、片径大,具有良好的品质;将所得石墨烯分散液制备石墨烯自支撑膜,其电导率可达3.2×104S·m-1
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王晨
燕绍九
南文争
王继贤
彭思侃
关键词 鳞片石墨高压均质液相剥离石墨烯水分散液高浓度    
Abstract:The high concentration graphene aqueous dispersion was obtained by high-pressure homogenization liquid phase exfoliation (HPH-LPE) of flake graphite in water. The effect of surfactant concentration, HPH pressure and cycle number on the concentration of graphene dispersion CG was studied by UV-Vis spectra. The structure and morphology of graphene were analyzed by Roman spectra, SEM and TEM. The results indicate that CG is obtained up to 324.3mg·L-1 for the first time by the parameters optimization, which is 10 times higher than that obtained by sonication; graphene obtained has few defects, thin thickness and large size, indicating the good quality of graphene production; the conductivity of free-standing film prepared by the obtained graphene dispersion can reach 3.2×104S·m-1.
Key wordsflake graphite    high-pressure homogenization liquid phase exfoliation    graphene aqueous dispersion    high concentration
收稿日期: 2018-04-27      出版日期: 2019-04-19
中图分类号:  TQ127.1+1  
通讯作者: 燕绍九(1980-),男,研究员,博士,主要从事纳米材料、磁性材料及石墨烯应用方面的研究工作,联系地址:北京市81信箱72分箱(100095),E-mail:shaojiuyan@126.com     E-mail: shaojiuyan@126.com
引用本文:   
王晨, 燕绍九, 南文争, 王继贤, 彭思侃. 高浓度石墨烯水分散液的制备与表征[J]. 材料工程, 2019, 47(4): 56-63.
WANG Chen, YAN Shao-jiu, NAN Wen-zheng, WANG Ji-xian, PENG Si-kan. Preparation and characterization of high concentration graphene aqueous dispersion. Journal of Materials Engineering, 2019, 47(4): 56-63.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2018.000478      或      http://jme.biam.ac.cn/CN/Y2019/V47/I4/56
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[1] 王晨, 燕绍九, 南文争, 陈翔. 表面活性剂对高浓度石墨烯水分散液制备的影响[J]. 材料工程, 2019, 47(7): 50-56.
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