Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/91169
Title: Non-Newtonian Thermosensitive Nanofluid Based on Carbon Dots Functionalized with Ionic Liquids
Authors: Gonçalves, Helena M R
Pereira, Rui F. P. 
Lepleux, Emmanuel
Pacheco, Louis
Valente, Artur J. M. 
Duarte, Abel J
Bermudez, Verónica de Zea
Keywords: Carbon dots; Ionic liquids; Nanofluids; Plasmonic effect; Self-improving ionic conductivity
Issue Date: Jul-2020
Publisher: Wiley
Project: info:eu-repo/grantAgreement/FCT/UID/QUI/00616/2013 
info:eu-repo/grantAgreement/FCT/UID/QUI/50006/2019 
info:eu-repo/grantAgreement/FCT/UID/QUI/00313/2019 
info:eu-repo/grantAgreement/FCT/UID/Multi/00709/2013 
info:eu-repo/grantAgreement/FCT/UID/CTM/50025 
info:eu-repo/grantAgreement/POCI‐01‐0145‐FEDER‐007491 
info:eu-repo/grantAgreement/POCI‐01‐0145‐FEDER‐007688 
info:eu-repo/grantAgreement/POCI‐01‐0145‐FEDER‐016884 
info:eu-repo/grantAgreement/PTDC/CTM‐NAN/0956/2014 
info:eu-repo/grantAgreement/POCI‐01‐0145‐FEDER‐016422 
info:eu-repo/grantAgreement/SAICT/PAC/0032/2015 
info:eu-repo/grantAgreement/NORTE‐01‐0145‐FEDER‐030858 
info:eu-repo/grantAgreement/FCT/SFRH/BPD/87759/2012 
Serial title, monograph or event: Small (Weinheim an der Bergstrasse, Germany)
Volume: 16
Issue: 28
Abstract: Non-Newtonian nanofluids present outstanding features in terms of energy transfer and conductivity with high application in numerous areas. In this work, non-Newtonian nanofluids based on carbon dots (Cdots) functionalized with ionic liquids (ILs) are developed. The nanofluids are produced using a simple, single-step method where the raw materials for the Cdots synthesis are glucose and waste biomass (chitin from crab shells). The use of ILs as both reaction media and functionalization molecules allows for the development of a new class of nanofluids, where the ILs on the Cdots surface represent the base-fluid. Here, the well-known benign IL 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) and a novel home-made IL (1-tosylate-3-methyl-imidazolium triflate) [Tmi][Trif] are used. The nanofluids obtained from both substrates show, apart from high conductivity and viscosity, light absorption, and good wettability, an appealing thermal sensitivity behavior. This thermal sensitivity is preserved even when applied as thin films on glass slides and can be boosted using the surface plasmon resonance effect. The results reported demonstrate that the new Cdots/IL-based nanofluids constitute a versatile and cost-effective route for achieving high-performance thermosensitive non-Newtonian sustainable nanofluids with tremendous potential for the energy coatings sector and heat transfer film systems.
URI: http://hdl.handle.net/10316/91169
ISSN: 1613-6810
1613-6829
DOI: 10.1002/smll.201907661
Rights: embargoedAccess
Appears in Collections:I&D CQC - Artigos em Revistas Internacionais

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