Graphene incorporated zinc oxide hybrid nanofluid for energy-efficient heat transfer application: A thermal lens study

Next Nanotechnology Pub Date : 2024-08-30 DOI:10.1016/j.nxnano.2024.100100

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Abstract

The work focuses on the development of a hybrid nanofluid (NF) comprising zinc oxide-graphene (ZG) to address heat transfer (HT) limitations in thermal systems. The study employs a highly sensitive mode-mismatched dual-beam thermal lens (MDTL) method to analyze the lattice dislocation-induced thermal diffusivity (D) modifications of the hybrid NF. The hybrid composite (HC) is synthesized by solid-state mixing and annealing of ZG. The formation of ZG hybrid composites is revealed through X-ray diffraction (XRD), Fourier transform infrared, X-ray photoelectron, and Raman spectroscopic analyses. The structural dislocations present in the HC are understood from XRD and Raman analyses. Ultraviolet-visible and photoluminescence spectroscopic studies revealed the optical properties of the samples. The MDTL study is carried out by preparing the NFs of the synthesized samples in the base fluid, ethylene glycol (EG), and reveals the impact of crystallite defects on the thermal characteristics of the synthesized composites. Thus, the study suggests the potential capability of ZG composites in tuning the thermal behaviour of EG for HT applications.

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用于高能效传热应用的石墨烯与氧化锌混合纳米流体：热透镜研究

这项研究的重点是开发一种由氧化锌-石墨烯（ZG）组成的混合纳米流体（NF），以解决热系统中的传热（HT）限制问题。研究采用了一种高灵敏度的模式错配双光束热透镜（MDTL）方法来分析晶格位错引起的混合纳米流体的热扩散率（D）变化。混合复合材料（HC）是通过 ZG 的固态混合和退火合成的。通过 X 射线衍射 (XRD)、傅立叶变换红外线、X 射线光电子和拉曼光谱分析揭示了 ZG 混合复合材料的形成。通过 X 射线衍射和拉曼分析，可以了解 HC 中存在的结构位错。紫外-可见光和光致发光光谱研究揭示了样品的光学特性。通过在基液乙二醇（EG）中制备合成样品的 NF，进行了 MDTL 研究，揭示了晶粒缺陷对合成复合材料热特性的影响。因此，该研究表明 ZG 复合材料具有调整乙二醇热性能的潜在能力，可用于高温应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Next Nanotechnology

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