A new kind of water-based nanofluid with a low loading of three-dimensional porous graphene

A new kind of water-based nanofluid with a low loading of three-dimensional porous graphene
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一种新型低载量三维多孔石墨烯水基纳米流体

DOI:
10.1007/s10853-017-1232-1
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发表时间:
2017-05
影响因子:
4.5
通讯作者:
Hong Haoqun
Hong Haoqun
中科院分区:
材料科学3区
文献类型:
--
作者:
Lin Yingxi;Zhang Haiyan;He Chunhua;Li Yunyong;Wang Shanxing;Hong Haoqun

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本研究制备了一种含有三维多孔石墨烯(3D PG)的稳定的水基纳米传热流体。对于3D PG在水中的分散,通过碱性方法对其进行亲水处理,这是通过使用过硫酸钾作为温和氧化过程引入羧基(-COOH)来制备水溶性石墨烯的一种简便有效的方法。研究了不同温度下纳米流体在不同负载量下的稳定性和导热性能。实验结果表明,纳米流体可以保持高度的稳定性,其增强的热导率高达8-34%,可以观察到,即使在较低的重量分数为0.01- 0.07wt%,在室温下。
In this study, stable water-based heat transfer nanofluid containing a kind of three-dimensional porous graphene (3D PG) has been prepared. For dispersion of 3D PG in water, it is hydrophilic treated by an alkaline method, which is a facile and effective approach in preparing water-soluble graphene by introducing the carboxyl groups (–COOH) as a mild oxidation process using potassium persulfate. The stability and thermal conductive performance of the nanofluid have been investigated with different loading at various temperatures. Experimental results show that the nanofluid can remain highly stability and its enhanced thermal conductivity up to 8–34% can be observed even at lower weight fraction of 0.01–0.07 wt% at room temperature.
DOI: 10.1016/j.apenergy.2014.02.032
发表时间: 2014-10-01
期刊: APPLIED ENERGY
影响因子: 11.2
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