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Issue 5, 2013
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A strategy to decorate porous polymer monoliths with graphene oxide and graphene nanosheets

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Abstract

Graphene oxide (GO)/graphene (GN) nanosheets were coated onto the poly(glycidyl methacrylate-ethylene dimethacrylate) monolithic bed synthesized inside the capillary in order to prepare a promising polymer monolith microextraction (PMME) material (GO/GN@poly(GMA-EDMA)). Various techniques, including Fourier transform infrared spectroscopy, atomic force microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy, were employed to characterize the synthesized GO/GN@poly(GMA-EDMA) monoliths, confirming that GO/GN was effectively functionalized on the poly(GMA-EDMA) monolithic materials. Furthermore, a new method was developed for the analysis of sarcosine (identified as a potential prostate cancer biomarker) using PMME coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS). Under the preoptimized conditions, the monolithic column afforded satisfactory enhancement factor (32-fold) and low limits of detection (1.0 ng mL−1) were obtained. In comparison to several other commercialized solid phase extraction adsorbents, GN@poly(GMA-EDMA) monoliths exhibited excellent performance with recoveries of sarcosine approaching 93% with relative standard deviations less than 11.5%.

Graphical abstract: A strategy to decorate porous polymer monoliths with graphene oxide and graphene nanosheets

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Publication details

The article was received on 05 Nov 2012, accepted on 20 Dec 2012 and first published on 20 Dec 2012


Article type: Paper
DOI: 10.1039/C2AN36608H
Citation: Analyst, 2013,138, 1549-1557

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    A strategy to decorate porous polymer monoliths with graphene oxide and graphene nanosheets

    S. Tong, X. Zhou, C. Zhou, Y. Li, W. Li, W. Zhou and Q. Jia, Analyst, 2013, 138, 1549
    DOI: 10.1039/C2AN36608H

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