Graphene-coated polymeric anion exchangers for ion chromatography

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 evapo...

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Veröffentlicht in:Analytica chimica acta 2017-06, Vol.970, p.73-81
Hauptverfasser: Zhang, Kai, Cao, Minyi, Lou, Chaoyan, Wu, Shuchao, Zhang, Peimin, Zhi, Mingyu, Zhu, Yan
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container_start_page 73
container_title Analytica chimica acta
container_volume 970
creator Zhang, Kai
Cao, Minyi
Lou, Chaoyan
Wu, Shuchao
Zhang, Peimin
Zhi, Mingyu
Zhu, Yan
description 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. [Display omitted] •Graphene-coated polymeric particles were fabricated by a facile method.•Hyperbranched condensation polymers (HBCPs) were grafted from graphene-coated particles to make anion exchangers.•Graphene amount and HBCPs layer count had significant effects on the anion exchange capacities.•Separation of diverse anionic analytes on the anion exchangers was demonstrated.•The prepared anion exchangers exhibited high stability.
doi_str_mv 10.1016/j.aca.2017.03.015
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subjects Anion exchanger
Carbonaceous stationary phase
Graphene
Hyperbranched condensation polymer
Ion chromatography
title Graphene-coated polymeric anion exchangers for ion chromatography
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