Ethylene glycol (EG)-based hybrid nanofluids containing graphene oxide–silver nanosheets (GO–Ag) were simply prepared without using any surfactant. The graphene oxide–silver composites were characterized using X-ray diffraction analysis, transmission electron microscope, infrared and UV–visible spectroscopy. The stability of GO–Ag nanofluids was estimated by UV–visible spectroscopy. The GO–Ag/EG hybrid nanofluids has good stability without significant sedimentation for 60 days. A few thermophysical properties of GO–Ag/EG nanofluids with 0.1, 0.2 and 0.3 wt% nanosheets were analysed experimentally at different temperatures ranging from 20 to 50°C.

中文翻译：

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氧化石墨烯-银杂化纳米流体的制备及热物理性能

包含氧化石墨烯-银纳米片（GO-Ag）的基于乙二醇（EG）的混合纳米流体的制备简单，不使用任何表面活性剂。使用 X 射线衍射分析、透射电子显微镜、红外和紫外-可见光谱对氧化石墨烯-银复合材料进行表征。GO-Ag 纳米流体的稳定性通过紫外-可见光谱法进行评估。GO-Ag/EG 混合纳米流体具有良好的稳定性，60 天没有明显的沉降。在 20 至 50°C 的不同温度下，通过实验分析了具有 0.1、0.2 和 0.3 wt% 纳米片的 GO-Ag/EG 纳米流体的一些热物理特性。