• 文献标题:   Performance of graphene sheets as stationary phase for capillary gas chromatographic separations
  • 文献类型:   Article
  • 作  者:   FAN J, QI ML, FU RN, QU LT
  • 作者关键词:   graphene sheet, stationary phase, capillary gas chromatography
  • 出版物名称:   JOURNAL OF CHROMATOGRAPHY A
  • ISSN:   0021-9673 EI 1873-3778
  • 通讯作者地址:   Beijing Inst Technol
  • 被引频次:   23
  • DOI:   10.1016/j.chroma.2015.04.030
  • 出版年:   2015

▎ 摘  要

This work presents the investigation of graphene as a new type of stationary phase for capillary GC separations. Graphene capillary column (0.25 mm, i.d.) achieved column efficiency of 3100 plates/m determined by n-dodecane at 120 degrees C. The obtained McReynolds constants suggested the weakly polar nature of graphene sheets as GC stationary phase. As evidenced, graphene stationary phase differs from the conventional phase (5% phenyl polysiloxane) in its resolving ability and retention behaviors, and achieved better separation for the Grob and other mixtures. The advantages of graphene stationary phase may mainly originate from its specific pi-pi stacking interaction as well as H-bonding interaction. Furthermore, graphene column exhibited good repeatability with relative standard deviation (RSD%) in the range of 0.01-0.07% for run-to-run and 2.5-6.7% for column-to-column, respectively. (C) 2015 Elsevier B.V. All rights reserved.