Abstract
Graphene-based composites represent a new class of materials with potential for many applications. Graphene can be attached to a metal, a semiconductor, or any polymer. In this work, our approach was to attach graphene to a well-known semiconductor, ZnO. We synthesized graphene–ZnO composites by a simple, low-cost, environmentally friendly solvothermal method, carrying out the reaction in different conditions in order to discover the optimum condition, and also to obtain a high-quality product. Our research demonstrated that the optimum temperature to obtain a high-quality product is 180 °C for 20 h. All obtained products were characterized by X-ray diffraction (XRD), scanning electron microscopy, electron dispersion spectrometry, X-ray photoelectron spectrometry, Raman spectroscopy, Fourier transform infrared spectrometry, UV–visible spectrophotometry, and thermogravimetric analysis. The XRD confirmed that the crystal structure of the ZnO in the nanocomposite was wurtzite type. The prepared composite was stable to 800 °C with its 80 % weight.
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Acknowledgments
This study was supported by the ERC (Center for Materials and Processes of Self Assembly) program of MOST/KOSEF (R11-2005-048-00000-0) and the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (KRF-2011-0024104).
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Johra, F.T., Lee, MJ. & Jung, WG. Solution-based fabrication of a graphene–ZnO nanocomposite. J Sol-Gel Sci Technol 66, 481–487 (2013). https://doi.org/10.1007/s10971-013-3035-4
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DOI: https://doi.org/10.1007/s10971-013-3035-4