Research output: Contribution to journal › Article › peer-review
Electrical conductivity of nanofluids with single- and multi-walled carbon nanotubes. Experimental study. / Rudyak, Valery; Pryazhnikov, Maxim; Minakov, Andrey et al.
In: Nano-Structures and Nano-Objects, Vol. 38, 101143, 05.2024.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Electrical conductivity of nanofluids with single- and multi-walled carbon nanotubes. Experimental study
AU - Rudyak, Valery
AU - Pryazhnikov, Maxim
AU - Minakov, Andrey
AU - Shupik, Andrey
N1 - This work was financially supported by the Russian Science Foundation (Agreement No. 20-19-00043).
PY - 2024/5
Y1 - 2024/5
N2 - The object of this paper is to experimental study the electrical conductivity of nanofluids with carbon nanotubes (CNT). Nanofluids based on water, ethylene glycol and isopropyl alcohol with single-walled (SWCNT) and multi-walled (MWCNT) carbon nanotubes are considered. In some cases, surfactants were used to prepare the nanofluid. CNT concentrations varied from 0.05% to 1%. It was shown that the electrical conductivity of all nanofluids much more than that of base fluids. The influence of surfactants on the electrical conductivity of nanofluids is studied and analyzed. The use of surfactants in all cases increases the electrical conductivity of the initial base fluids. The greatest excess of the electrical conductivity was achieved when using ionic surfactants. For the first time, the electrical conductivity of nanofluids with SWCNTs and MWCNTs is systematically compared. The same base fluids are used for this. It was shown that electrical conductivity of nanofluids with SWCNTs significantly exceeds that of nanofluids with MWCNTs. The effect of aspect ratio on electrical conductivity of nanofluids with SWCNTs and MWCNTs are studied. In conclusion, the possible mechanisms of electrical conductivity of the considered nanofluids are discussed.
AB - The object of this paper is to experimental study the electrical conductivity of nanofluids with carbon nanotubes (CNT). Nanofluids based on water, ethylene glycol and isopropyl alcohol with single-walled (SWCNT) and multi-walled (MWCNT) carbon nanotubes are considered. In some cases, surfactants were used to prepare the nanofluid. CNT concentrations varied from 0.05% to 1%. It was shown that the electrical conductivity of all nanofluids much more than that of base fluids. The influence of surfactants on the electrical conductivity of nanofluids is studied and analyzed. The use of surfactants in all cases increases the electrical conductivity of the initial base fluids. The greatest excess of the electrical conductivity was achieved when using ionic surfactants. For the first time, the electrical conductivity of nanofluids with SWCNTs and MWCNTs is systematically compared. The same base fluids are used for this. It was shown that electrical conductivity of nanofluids with SWCNTs significantly exceeds that of nanofluids with MWCNTs. The effect of aspect ratio on electrical conductivity of nanofluids with SWCNTs and MWCNTs are studied. In conclusion, the possible mechanisms of electrical conductivity of the considered nanofluids are discussed.
KW - Carbon nanotubes
KW - Electrical conductivity
KW - Nanofluids
KW - Surfactant
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85189504241&origin=inward&txGid=eb9804dbb52fcafdbde1b812354ad2be
UR - https://www.mendeley.com/catalogue/1d0071a8-36be-3d52-955d-34ffe8fec616/
U2 - 10.1016/j.nanoso.2024.101143
DO - 10.1016/j.nanoso.2024.101143
M3 - Article
VL - 38
JO - Nano-Structures and Nano-Objects
JF - Nano-Structures and Nano-Objects
SN - 2352-507X
M1 - 101143
ER -
ID: 61051518