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Remarkable thermal conductivity enhancement in Ag-decorated graphene nanocomposites based nanofluid by laser liquid solid interaction in ethylene glycol.
Scientific Reports ( IF 3.8 ) Pub Date : 2020-07-03 , DOI: 10.1038/s41598-020-67418-3
M C Mbambo 1, 2 , S Khamlich 1, 2 , T Khamliche 1, 2 , M K Moodley 3 , K Kaviyarasu 1, 2 , I G Madiba 1, 2 , M J Madito 2 , M Khenfouch 1, 2 , J Kennedy 1, 2, 4 , M Henini 1, 2, 5 , E Manikandan 1, 2, 6 , M Maaza 1, 2
Affiliation  

We report on the synthesis and enhanced thermal conductivity of stable Ag-decorated 2-D graphene nanocomposite in ethylene glycol based nanofluid by laser liquid solid interaction. A surfactant free nanofluid of Ag nanoparticles anchored onto the 2-D graphene sheets were synthesized using a two-step laser liquid solid interaction approach. In order to understand a pulsed Nd:YAG laser at the fundamental frequency (λ = 1,064 nm) to ablate Ag and graphite composite target submerged in ethylene glycol (EG) to form AgNPs decorated 2-D GNs-EG based nanofluid. From a heat transfer point of view, it was observed that the thermal conductivity of this stable Ag-graphene/EG is significantly enhanced by a factor of about 32.3%; this is highest reported value for a graphene based nanofluid.



中文翻译:

通过乙二醇中的激光液体固相相互作用,在基于Ag修饰的石墨烯纳米复合材料的纳米流体中显着提高了导热性。

我们报告了通过激光液体固相作用在乙二醇基纳米流体中稳定的银修饰的二维石墨烯纳米复合材料的合成和提高的导热性。使用两步激光液体固相相互作用方法合成了锚定在二维石墨烯片材上的无纳米表面活性剂的纳米银颗粒。为了了解脉冲Nd:YAG激光的基频(λ= 1,064 nm),以烧蚀浸没在乙二醇(EG)中的Ag和石墨复合靶材,形成以AgNPs装饰的二维GNs-EG基纳米流体。从传热的观点来看,观察到该稳定的Ag-石墨烯/ EG的热导率显着提高了约32.3%。这是基于石墨烯的纳米流体的最高报道值。

更新日期:2020-07-03
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