Thermophysical properties of water-based nanofluids modified with few-layer graphene

IF 11.6 2区 材料科学 Q1 CHEMISTRY, PHYSICAL Carbon Pub Date : 2025-02-01 Epub Date: 2024-12-11 DOI:10.1016/j.carbon.2024.119911
Aleksei A. Vozniakovskii , Ekaterina I. Kalashnikova , Sergey V. Kidalov , Alexander P. Voznyakovskii
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Abstract

The paper describes a method for the production of water-based nanofluids with few-layer graphene (FLG) synthesized by self-propagating high-temperature synthesis (SHS). The advantage of this method is the possibility of synthesizing large volumes of material without Stone-Wales defects at low cost. This study presents results on the viscosity, electrical conductivity, specific heat capacity, and thermal conductivity of water-based nanofluids modified with FLG. By using 0.8 mass % FLG obtained by SHS, it became possible to obtain stable nanofluids without the use of surfactants. The FLG concentration of 0.8 mass % increased thermal conductivity by up to 2.3 times and electrical conductivity by up to 90 times compared to pure water at 60 °C. At the same time, there were no significant changes in the viscosity or heat capacity of the nanofluids at different FLG concentrations and temperatures.

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少层石墨烯改性水基纳米流体的热物理性质
本文介绍了一种利用自传播高温合成(SHS)技术制备少层石墨烯(FLG)水基纳米流体的方法。这种方法的优点是有可能以低成本合成大量没有Stone-Wales缺陷的材料。本文介绍了用FLG改性的水基纳米流体的粘度、电导率、比热容和导热系数的研究结果。通过使用SHS获得的0.8质量%的FLG,可以在不使用表面活性剂的情况下获得稳定的纳米流体。与60°C的纯水相比,FLG浓度为0.8质量%时,导热系数提高了2.3倍,导电性提高了90倍。同时,在不同FLG浓度和温度下,纳米流体的粘度和热容没有显著变化。
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来源期刊
Carbon
Carbon 工程技术-材料科学:综合
CiteScore
20.80
自引率
7.30%
发文量
0
审稿时长
23 days
期刊介绍: The journal Carbon is an international multidisciplinary forum for communicating scientific advances in the field of carbon materials. It reports new findings related to the formation, structure, properties, behaviors, and technological applications of carbons. Carbons are a broad class of ordered or disordered solid phases composed primarily of elemental carbon, including but not limited to carbon black, carbon fibers and filaments, carbon nanotubes, diamond and diamond-like carbon, fullerenes, glassy carbon, graphite, graphene, graphene-oxide, porous carbons, pyrolytic carbon, and other sp2 and non-sp2 hybridized carbon systems. Carbon is the companion title to the open access journal Carbon Trends. Relevant application areas for carbon materials include biology and medicine, catalysis, electronic, optoelectronic, spintronic, high-frequency, and photonic devices, energy storage and conversion systems, environmental applications and water treatment, smart materials and systems, and structural and thermal applications.
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