BIBLIOS

Document type
Conference papers

Document subtype
Abstract

Title
IoNanofluids: State of Art

Participants in the publication
Carlos Alberto Nieto de Castro (Author)
Dep. Química e Bioquímica
CQE

Summary
An IoNanofluid is defined as a stable dispersion of the nanomaterial in an ionic liquid. Since we first reported the enhanced thermal conductivity of the system with respect to the pure ionic liquid [1], many experimental and theoretical studies have been performed, using several nanomaterials like carbon nanotubes and graphene. There are several reasons to study these 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 NP’s in ionic liquids is caused by a competition between WDW (or polar) forces and double layer 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 NP’s in IL’s, and therefore the stability of a dispersion in the IoNanofluid. In the end, aggregation can originate phase separation, as explained in Fig. 1\nFig. 1 – Illustration of particle nanoparticle aggregation (adapted from PCCP, 16 (2014) 9515)\n\nIt is the purpose of this paper to give an overall view of the actual situation in the field, with special emphasis in preparation, properties and applications of IoNanofluids.

Editor(s)
Katharina Schroder


Institution
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA

Event
26th EUCHEM Conference on Molten Salts and Ionic Liquids, 3-8, 2016

Publication Identifiers
ISBN - 9783950401745

Address
Viena, Aústria

Organizers
Institute of Applied Synthetic Chemistry, TU-Wien, Austria

Publisher
TU-Wien

Collection
Abstract Book



Document Identifiers
URL - http://euchem2016.book-of-abstracts.com/programme/confirmed-oral-presentations/

Keywords
Ionannofluids Thermophysical Properties Srtucture Molecular Interactions Stability Applications