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Publication details

Title
Ionanofluids for thermal applications

Authors
Carlos Nieto de Castro
Dep. Química e Bioquímica
CQE-Ciências - Centro de Química Estrutural-Ciências
S.M.S. Murshed
Dep. Química e Bioquímica
CQE-Ciências - Centro de Química Estrutural-Ciências
Maria José Lourenço
Dep. Química e Bioquímica
CQE-Ciências - Centro de Química Estrutural-Ciências
Fernando J. Vieira dos Santos
Dep. Química e Bioquímica
CQE-Ciências - Centro de Química Estrutural-Ciências
Manuel Matos Lopes
Dep. Química e Bioquímica
CQE-Ciências - Centro de Química Estrutural-Ciências
João França
Salomé I. Vieira
Dep. Química e Bioquímica
CCMM - Centro de Ciências Moleculares e Materiais 
Francisco Bioucas
CQE-Ciências - Centro de Química Estrutural-Ciências

Document type
Conference papers

Scope
International

Refereeing
Yes

Document type
Extended abstract

Summary
An IoNanofluid is defined as a stable dispersion of the nanomaterial in an ionic liquid (IL). Since we first reported the enhanced thermal conductivity of this new class of fluids with respect to the pure ionic liquid [1], many experimental and theoretical studies have been performed, using several nanomaterials like carbon nanotubes and graphene in various ILs. There are several reasons to study these emerging nanomaterials-ILs complex systems that can be summarized in the following points:\\n• Enhanced thermal properties for heat transfer and heat storage\\n• Complex interactions create nano-regions that enhance reactivity and selectivity of chemical reactions (nanocatalysis)\\n• IoNanofluids are designable and fine-tunable through base ILs to meet any specific application or task requirement\\n• Non-flammability and non-volatility at ambient conditions, environmentally friendly solvents, and reaction fluids\\n \\nHowever, the success of its use in scientific or industrial applications depends how we analyze and characterize the emulsion prepared and its stability, as particle aggregation can destroy our purpose. Aggregation of nanoparticles (NPs) in ionic liquids is caused by a competition between Van der Waals (VDW) or polar forces and double layer (DL) forces screening caused by ions (DL), at the particle/IL interface. VDW forces are attractive and DL forces are repulsive. Balance between these forces control aggregation of NPs in ILs, and therefore the stability of a dispersion in the IoNanofluid. In the end, aggregation can originate phase separation, as explained in Fig. 1. Although achieving proper and long-term stability of such complex fluids is challenging, it is crucial for their application particularly in thermal systems.\\nFig. 1. Illustration of nanoparticle aggregation (partially adapted from [2]).\\nIt is the purpose of this paper to give an overall view of the actual situation in the field, with special emphasis in the applications of IoNanofluids to thermal systems as new heat transfer fluids

Date of Publication
2016-10-25

Institution
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA

Event
Nanouptake COST Action Working Group Meeting

Address
Castellon de la Plana, Spain

Organizers
Nanouptake

Identifiers
URL - http://nanouptake.uji.es/wp-content/uploads/2017/12/Event1_posterFinal-Final.pdf

Keywords
Ionanofluids density viscosity Thermal conductivity Thermal Applications Preparation


Export

APA
Carlos Nieto de Castro, S.M.S. Murshed, Maria José Lourenço, Fernando J. Vieira dos Santos, Manuel Matos Lopes, João França, Salomé I. Vieira, Francisco Bioucas, (2016). Ionanofluids for thermal applications. Nanouptake COST Action Working Group Meeting, -

IEEE
Carlos Nieto de Castro, S.M.S. Murshed, Maria José Lourenço, Fernando J. Vieira dos Santos, Manuel Matos Lopes, João França, Salomé I. Vieira, Francisco Bioucas, "Ionanofluids for thermal applications" in Nanouptake COST Action Working Group Meeting, Castellon de la Plana, Spain, 2016, pp. -, doi:

BIBTEX
@InProceedings{40843, author = {Carlos Nieto de Castro and S.M.S. Murshed and Maria José Lourenço and Fernando J. Vieira dos Santos and Manuel Matos Lopes and João França and Salomé I. Vieira and Francisco Bioucas}, title = {Ionanofluids for thermal applications}, booktitle = {Nanouptake COST Action Working Group Meeting}, year = 2016, pages = {-}, address = {Castellon de la Plana, Spain}, publisher = {} }