Preparation and Characterization of Functionalized Graphene with Glycidy Methacrylate†

doi:10.7503/cjcu20150340

Abstract

Abstract:

Graphene oxide(GO) was prepared from natural graphite by modified Hummers’ method, then modified by glycidyl methacrylate(GMA) under mild conditions to obtain functionalized graphene oxide(FGO). The as-prepared FGO could be reduced by hydrazine hydrate to get functionalized graphene(FG). The dispersion test results show that FG can be stably dispersed in ethanol, acetone and N,N-dimethylformamide by sonication. Fourier transform infrared spectra, X-ray diffraction analysis and X-ray photoelectron spectra all demostrated that the epoxy of GMA can react with the hydroxy group of GO and connect with hexatomic of GO by new covalent bond. The distance between FG sheets decrease and the disorder of FG increase after FGO was reduced by hydrazine hydrate. Scanning electron microscope(SEM) images show that FG showed typical corrugation and scrolling structures. Atomic force microscope(AFM) images show that the thickness of FG sheets is 2—3 nm. Thermo gravimetric analysis(TGA) results show that the thermostability of reduced graphene oxide(RGO) was better than that of FG, and the thermostability of GO was the most unstable.

Key words: Glycidyl methacrylate(GMA), Graphene, Functionalization, Dispersion test

CLC Number:

O625
O648.2

TrendMD:

JIN Fei, LIU Hui, ZHAO Jianying, LIU Honggang, PAN Chuncheng, HE Rui, TIAN Liping. Preparation and Characterization of Functionalized Graphene with Glycidy Methacrylate^†[J]. Chem. J. Chinese Universities, 2015, 36(9): 1713.

Figures/Tables 8

Fig.1 FTIR spectra of GO(a), FGO(b), FG(c) and RGO(d)

Fig.2 Wide scan XPS of GO(A), FGO(B) and FG(C)

Fig.3 Narrow scan XPS of C1s for GO(A), FGO(B) and FG(C)

Fig.4 XRD patterns of GO(a), FGO(b) and FG(c)

Fig.5 TG curves of GO(a), FG(b) and RGO(c) in N2

Fig.6 SEM images of GO(A), FGO(B) and FG(C) and AFM image of FG(D) with height profile(E)

Fig.7 Suspensions of FG in H2O(A), DMF(B),ethanol(C) and acetone(D)

Scheme 1 Reaction between GMA and GO to produce FGO

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