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Publication details

Document type
Conference papers

Document subtype
Abstract

Title
Study of long multi-walled carbon nanotube networks in ionanofluids with substantially improved thermal conductivity

Participants in the publication
Marzena Dzida (Author)
Sławomir Boncel (Author)
Bertrand Jóźwiak (Author)
Heather F. Greer (Author)
Mateusz Dulski (Author)
Adrian Golba (Author)
Rafał Flamholc (Author)
Grzegorz Dzido (Author)
Justyna Dziadosz (Author)
Anna Kolanowska (Author)
Rafał Jędrysiak (Author)
Łukasz Scheller (Author)
Krzysztof Cwynar (Author)
Edward Zorębski (Author)
Carlos E.S. Bernardes (Author)
Dep. Química e Bioquímica
 CQE
 Maria José V. Lourenço (Author)
Dep. Química e Bioquímica
 CQE
 Carlos Nieto de Casto (Author)
Dep. Química e Bioquímica
 CQE
Summary
Ionanofluids (INFs) – composed of multi-walled carbon nanotubes (MWCNTs) dispersed in ionic liquids (ILs) – are hybrid systems covering improved thermal conductivity, non-flammability, high stability, which can lead to efficient and safe heat transfer media. We present structural and spectroscopic studies, and molecular dynamics simulations correlated with sky-high (40%) enhancement in thermal conductivity of 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ([BMpyr][NTf2])-based INFs with C-sp2 rich, long,\ncrystalline MWCNTs. We found that nanolayer coalescence, supported by geometry-driven MWCNT assembling, leads to the nanotube bundles toward 3D-networks in INFs (Fig. 1). The energy of CNTs walls–IL interaction obtained from molecular dynamics simulations shows that the formation of CNT networks, separated by a layer of IL ions is, most likely, \na thermodynamically favorable process. In turn, the correlation between ID/IG and ID/I2D integrated intensity ratios suggests formation of the new covalent bonds between \nthe broken nanotube and, most probably, the IL cation. Such a capture would neutralize dangling bonds upon the MWCNTs ultrasonication-induced cutting. Thus, the molecular perfection of the MWCNT structure as the thermoactive component with its supramolecular arrangement and the MWCNT-IL interactions affect extraordinary thermal conductivity enhancement.

Editor(s)
Institute of Chemical Engineering Sciences

Date of Publication
2022-06-05

Institution
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA

Event
28th EUCHEM Conference on Molten Salts and Ionic Liquids

Publication Identifiers

Address
Patras, Greece

Organizers
Institute of Chemical Engineering Sciences


Export

APA
Marzena Dzida, Sławomir Boncel, Bertrand Jóźwiak, Heather F. Greer, Mateusz Dulski, Adrian Golba, Rafał Flamholc, Grzegorz Dzido, Justyna Dziadosz, Anna Kolanowska, Rafał Jędrysiak, Łukasz Scheller, Krzysztof Cwynar, Edward Zorębski, Carlos E.S. Bernardes, Maria José V. Lourenço, Carlos Nieto de Casto, (2022). Study of long multi-walled carbon nanotube networks in ionanofluids with substantially improved thermal conductivity. 28th EUCHEM Conference on Molten Salts and Ionic Liquids, -

IEEE
Marzena Dzida, Sławomir Boncel, Bertrand Jóźwiak, Heather F. Greer, Mateusz Dulski, Adrian Golba, Rafał Flamholc, Grzegorz Dzido, Justyna Dziadosz, Anna Kolanowska, Rafał Jędrysiak, Łukasz Scheller, Krzysztof Cwynar, Edward Zorębski, Carlos E.S. Bernardes, Maria José V. Lourenço, Carlos Nieto de Casto, "Study of long multi-walled carbon nanotube networks in ionanofluids with substantially improved thermal conductivity" in 28th EUCHEM Conference on Molten Salts and Ionic Liquids, Patras, Greece, 2022, pp. -, doi:

BIBTEX
@InProceedings{64929, author = {Marzena Dzida and Sławomir Boncel and Bertrand Jóźwiak and Heather F. Greer and Mateusz Dulski and Adrian Golba and Rafał Flamholc and Grzegorz Dzido and Justyna Dziadosz and Anna Kolanowska and Rafał Jędrysiak and Łukasz Scheller and Krzysztof Cwynar and Edward Zorębski and Carlos E.S. Bernardes and Maria José V. Lourenço and Carlos Nieto de Casto}, title = {Study of long multi-walled carbon nanotube networks in ionanofluids with substantially improved thermal conductivity}, booktitle = {28th EUCHEM Conference on Molten Salts and Ionic Liquids}, year = 2022, pages = {-}, address = {Patras, Greece}, publisher = {} }