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Facile Synthesis of Graphene/ZnO Nanocomposites by a Low―temperature Exfoliation Method

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Author(s): YUAN Wen-Hui, GU Ye-Jian, LI Bao-Qing, LI Li

Journal: Journal of Inorganic Materials
ISSN 1000-324X

Volume: 27;
Issue: 6;
Start page: 591;
Date: 2012;
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Keywords: graphene; ZnO; low temperature exfoliation; fluorescence property

ABSTRACT
Graphite oxide/ZnO was prepared at low temperature (80¡䥲par; with graphite oxide (GO) and zinc sulfate heptahydrate (ZnSO4·7H2O) as initial reactants. The graphene/ZnO (GNS/ZnO) was then prepared by a low―temperature chemical exfoliation method. The as―prepared GNS/ZnO was characterized by X―ray diffraction (XRD), Fourier transform infrared spectroscope (FT―IR), thermo―gravimetric analysis (TG), X―ray photoelectron spectroscopy (XPS), Raman spectra (RS), scanning electron microscope (SEM) and transmission electron microscope (TEM), respectively. The results indicate that graphite oxide is completely reduced to graphene and the well―dispersed ZnO nanoparticles are successfully deposited on graphene sheets as spacers to keep the neighboring sheets separate. Photoluminescence spectra of ZnO and GNS/ZnO nanocomposites display the ?uorescence quenching property of GNS/ZnO, implying that the GNS/ZnO nanocomposites are expected for practical use in the field of photoelectronics.

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