Citation: ZHANG Wei-Bing, GAO Yu, PENG Li, ZHAO Yi-Man, LIU Hai-Yan. Preparation and Evaluation of Graphene Oxide Modified Porous Composite Layer Open Tubular Capillary Column for Capillary Liquid Chromatography[J]. Chinese Journal of Analytical Chemistry, ;2016, 44(6): 835-841. doi: 10.11895/j.issn.0253-3820.150945 shu

Preparation and Evaluation of Graphene Oxide Modified Porous Composite Layer Open Tubular Capillary Column for Capillary Liquid Chromatography

Shanghai Key Laboratory of Functional Materials Chemistry, East China University Of Science and Technology, Shanghai 200237, China

Received Date: 27 November 2015
Revised Date: 27 January 2016

Fund Project: This work was supported by the National Major Scientific Instruments and Equipments Special Project (No. 2012YQ120044), the Major Program of National Natural Science Foundation of China (21235005) and the National Natural Science Foundation of China (No.21475044)

Figures(11)

Graphene oxide (GO) modified stationary phase for open tubular capillary (3 m × 25 μm i.d.) of liquid chromatography (OT-CLC) was fabricated by coating GO sheets onto poly(vinylbenzyl chloride-divinylbenzene) porous composite layer via covalent coupling, which was prepared by in-situ polymerization. Scanning electron microscopy (SEM), Raman spectroscopy and transmission electron microscopy (TEM) were used to characterize the structure of the stationary phase. The results demonstrated that poly(vinylbenzyl chloride-divinylbenzene) porous composite layer had decentralized globular structure, and the GO sheets covered on the porous layer homogenously. The phase ratio and sample capacity were greatly improved due to the spherical polymer layer and the coverage of GO. Thus, alkyl benzenes, neutral polycyclic aromatic hydrocarbons, acidic and basic compounds could be well separated by using acetonitrile-water as eluent, while four nucleobases were completely separated by using acetonitrile-0.02 mol/L ammonium acetate as mobile phase. The run-to-run, day-to-day, and column-to-column reproducibilities were evaluated by calculating the relative standard deviations (RSDs, n=6) of the retention time of o-phenylenediamine, aniline and 2, 4, 6-trifluoroaniline, respectively. These RSD values were all in the range of 0.3%-2.0%.
- Graphene oxide,
- Porous composite layer,
- Open tubular capillary liquid chromatography
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