• 文献标题:   Mechanochemical Delamination of Graphite in the Presence of Various Inorganic Salts and Formation of Graphene by Its Subsequent Liquid Exfoliation
  • 文献类型:   Article
  • 作  者:   POSUDIEVSKY OY, KHAZIEIEVA OA, KOSHECHKO VG, POKHODENKO VD
  • 作者关键词:   graphite, graphene, mechanochemical treatment, inorganic salt, electrical conductivity, stable dispersion, spectral propertie
  • 出版物名称:   THEORETICAL EXPERIMENTAL CHEMISTRY
  • ISSN:   0040-5760 EI 1573-935X
  • 通讯作者地址:   Natl Acad Sci Ukraine
  • 被引频次:   8
  • DOI:   10.1007/s11237-014-9353-y
  • 出版年:   2014

▎ 摘  要

Feasibility was demonstrated for the mechanochemical delamination of graphite in the presence of inorganic salts such as NaCl, Na2SO4, and CaCO3 with subsequent liquid exfoliation of the resultant nanostructurized graphite materials to produce graphene. The nature of the inorganic delaminating agents, in particular, their hardness, may have a significant effect on the structural defectivity in the graphenes obtained and their capacity to form stable dispersions in various solvents. Sodium sulfate proved to be the most generally useful agent among the inorganic salts tested. The use of sodium sulfate leads to stable graphene dispersions in N-methylpyrrolidone, dimethylformamide, ethanol, and water.