BIBLIOS

Document type
Conference papers

Document subtype
Abstract

Title
IoNanofluids from Graphene: A New Challenge

Participants in the publication
Kristiina Kreek (Author)
Salomé I. C. Vieira (Author)
Dep. Química e Bioquímica
Maria José Lourenço (Author)
Dep. Química e Bioquímica
CQE
Carlos Nieto de Castro (Author)
Dep. Química e Bioquímica
CQE

Summary
The development of IoNanofluids has been made so far with carbon nanotubes, and our laboratory in Lisbon has published several papers on it. However, since the work of Wang et al [1] with [C6mim][BF4], not many works were devoted to this nanomaterial dispersed in ionic liquids.\nThe preparation of nanofluids and its effect on the properties was discussed recently by Lourenço e Vieira [2], where it was demonstrated that the nanomaterial production and characterization was extremely important for nanofluids stability.\nIn this paper we report data on the thermal conductivity of [C2mim][X], with X=CH3SO3, SCN and C(CN)3 and its nanofluids with graphene, for temperatures between -10ºC and 70ºC and mass fractions of graphene of 0.5, 1 and 1.5%. Graphene was obtained from Sky Spring Nanomaterials Inc. USA (Product #041DX), with thickness (6-8 nm) and average particle diameter of 15 ?m. The nanomaterial particle dimensions were characterized by TEM imagining. \nMeasurements were performed with a thermal conductivity meter, Hukseflux model (TPSYS02), with probe TP08. A special thermostated cell was constructed, and temperature was controlled within 0.1ºC. The instrument quality was tested with water (Millipore®) between room temperature and 70ºC. Deviations from the IUPAC standard reference correlation of Ramires et al [3] (accuracy 0.5%) where smaller than 1.5%. The estimated uncertainty of the data herein presented is assumed to be 2%. \nResults obtained show that the enhancement of the thermal conductivity of these IoNanofluids is high (up to 30%), a result of the same order of magnitude found by Wang et al [1] with [C6mim][BF4] for much smaller mass fraction (0.06%). Differences will be discussed on the basis of the IoNanofluid preparation and structure.

Editor(s)
Katharina Schroder


Institution
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA

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

Publication Identifiers
ISBN - 9783950401745

Address
Vienna, Austria

Organizers
Institute of Applied Synthetic Chemistry, TU-Wien

Publisher
TU-Wien

Collection
Abstract Book



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

Keywords
Ionanofluids Graphene Thermal Conductivity