Investigation on rheological properties of carbon nanotube nanofluids

Shi, Quanju; Liu, Yafei; Chen, Fang; Dong, Shuai

doi:10.1080/00319104.2017.1407933

Cited by 6 publications

(3 citation statements)

References 21 publications

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“…These observations are useful to understand the mechanisms of sedimentation, but they are a qualitative assessment and are not fully representative of real-life applications, where the nanofluids are subject to circulation, with continued opportunities for mixing and gaining the advantages of shear-thinning mechanisms [ 22 , 23 ]. Hence, before UV–Vis spectroscopy, each sample was shaken vigorously by hand twice to redisperse the CNTs.…”

Section: Resultsmentioning

confidence: 99%

“…CNTs are potentially one of the most attractive options, as they undergo a phenomenon called “shear thinning”, which is beneficial to their application in DASCs. Where the fluid is constantly pumped, the CNTs can align in the direction of the liquid flow, which at low CNT concentrations can result in a working fluid with a viscosity even lower than that of the base fluid alone [ 22 ]. At greater shear rates, entangled and agglomerated CNTs can be deagglomerated, enhancing the stability of the nanofluid [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

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Hybrid Plasma–Liquid Functionalisation for the Enhanced Stability of CNT Nanofluids for Application in Solar Energy Conversion

et al. 2022

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Macroscopic ribbon-like assemblies of carbon nanotubes (CNTs) are functionalised using a simple direct-current-based plasma–liquid system, with oxygen and nitrogen functional groups being added. These modifications have been shown to reduce the contact angle of the ribbons, with the greatest reduction being from 84° to 35°. The ability to improve the wettability of the CNTs is of paramount importance for producing nanofluids, with relevance for a number of applications. Here, in particular, we investigate the efficacy of these samples as nanofluid additives for solar–thermal harvesting. Surface treatments by plasma-induced non-equilibrium electrochemistry are shown to enhance the stability of the nanofluids, allowing for full redispersion under simulated operating conditions. Furthermore, the enhanced dispersibility results in both a larger absorption coefficient and an improved thermal profile under solar simulation.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hybrid Plasma–Liquid Functionalisation for the Enhanced Stability of CNT Nanofluids for Application in Solar Energy Conversion

et al. 2022

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“…39,40 Also, analytical ultracentrifugation has been applied to the determination of lateral dimensions of GO, considering GO flakes as flat discs. 41 Most theoretical studies on the CNT viscosity are based on different expansions of classical two phase flow models, 42 which are here the starting point for the discussion. Molecular dynamics simulations have been applied to the CNT viscosity, 15 but are out of the scope of the present study.…”

Section: Introductionmentioning

confidence: 99%