• 文献标题:   Graphene-coated polymeric anion exchangers for ion chromatography
  • 文献类型:   Article
  • 作  者:   ZHANG K, CAO MY, LOU CY, WU SC, ZHANG PM, ZHI MY, ZHU Y
  • 作者关键词:   carbonaceous stationary phase, graphene, ion chromatography, hyperbranched condensation polymer, anion exchanger
  • 出版物名称:   ANALYTICA CHIMICA ACTA
  • ISSN:   0003-2670 EI 1873-4324
  • 通讯作者地址:   Zhejiang Univ
  • 被引频次:   16
  • DOI:   10.1016/j.aca.2017.03.015
  • 出版年:   2017

▎ 摘  要

Carbonaceous stationary phases have gained much attention for their peculiar selectivity and robustness. Herein we report the fabrication and application of a graphene-coated polymeric stationary phase for anion exchange chromatography. The graphene-coated particles were fabricated by a facile evaporation reduction method. These hydrophilic particles were proven appropriate substrates for grafting of hyperbranched condensation polymers (HBCPs) to make pellicular anion exchangers. The new phase was characterized by zeta potentials, Fourier transform infrared spectroscopy, thermogravimetry and scanning electron microscope. Frontal displacement chromatography showed that the capacities of the anion exchangers were tuned by both graphene amount and HBCPs layer count. The chromatographic performance of graphene-coated anion exchangers was demonstrated with separation of inorganic anions, organic acids, carbohydrates and amino acids. Good reproducibility was obtained by consecutive injections, indicating high chemical stability of the coating. (C) 2017 Published by Elsevier B.V.