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SYNTHESIS AND CHARACTERIZATION OF GRAPHENE/ZINC OXIDE NANOCOMPOSITES

机译:石墨烯/氧化锌纳米复合材料的合成与表征

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This study investigates the synthesis and characterization of graphene/zinc oxide nanocomposites. Wet impregnation method was employed for the synthesis. Firstly, graphene nanoplatelets and zinc nitrate hexahydrate were concurrently dispersed in ethanol and subjected to sonication for 1 h. Then, the dispersion was put in a furnace at 70 °C overnight. The paste was then collected and heated further up to 400 °C in air for a duration of 4 h. The process was proceeded to yield insoluble nanocomposites. The synthesis was followed by characterization of the nanocomposite samples by Field Emission Scanning Electron Microscopy (FESEM), X-Ray Diffraction (XRD) and Thermal Gravimetric Analysis (TGA). The XRD pattern revealed the presence of ZnO crystals and graphene. The FESEM images showed that ZnO crystals with average particle size of 30 nm are uniformly distributed on graphene surfaces. According to the TGA result, the content of nanocomposites is in good agreement with the materials used during synthesis.
机译:这项研究调查了石墨烯/氧化锌纳米复合材料的合成和表征。湿浸渍法被用于合成。首先,将石墨烯纳米片和六水合硝酸锌同时分散在乙醇中,并进行超声处理1 h。然后,将分散体放入70℃的炉中过夜。然后收集糊状物,并在空气中进一步加热至400°C,持续4 h。进行该过程以产生不溶的纳米复合材料。合成后,通过场发射扫描电子显微镜(FESEM),X射线衍射(XRD)和热重分析(TGA)对纳米复合材料样品进行表征。 XRD图谱表明存在ZnO晶体和石墨烯。 FESEM图像显示平均粒径为30 nm的ZnO晶体均匀分布在石墨烯表面。根据TGA结果,纳米复合材料的含量与合成过程中使用的材料非常吻合。

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