English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/182949
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:

Title

Modification of the raman spectra in graphene-based nanofluids and its correlation with thermal properties

AuthorsRodríguez-Laguna, María del Rocío CSIC; Gómez-Romero, P. CSIC ORCID ; Sotomayor Torres, C. M. CSIC ORCID; Chávez, Emigdio CSIC ORCID
KeywordsRaman of nanofluids
Enhancement of thermal conductivity
Nanofluids
Graphene
Issue Date26-May-2019
PublisherMultidisciplinary Digital Publishing Institute
CitationNanomaterials 9(5): 804 (2019)
AbstractIt is well known that by dispersing nanoparticles in a fluid, the thermal conductivity of the resulting nanofluid tends to increase with the concentration of nanoparticles. However, it is not clear what the mechanism behind this phenomenon is. Raman spectroscopy is a characterization technique connecting the molecular and macroscopic world, and therefore, it can unravel the puzzling effect exerted by the nanomaterial on the fluid. In this work, we report on a comparative study on the thermal conductivity, vibrational spectra and viscosity of graphene nanofluids based on three different amides: N, N-dimethylacetamide (DMAc); N, N-dimethylformamide (DMF); and N-methyl-2-pyrrolidinone (NMP). A set of concentrations of highly stable surfactant-free graphene nanofluids developed in-house was prepared and characterized. A correlation between the modification of the vibrational spectra of the fluids and an increase in their thermal conductivity in the presence of graphene was confirmed. Furthermore, an explanation of the non-modification of the thermal conductivity in graphene-NMP nanofluids is given based on its structure and a peculiar arrangement of the fluid.
DescriptionThis article belongs to the Special Issue Thermal Transport in Nanostructures and Nanomaterials.
Publisher version (URL)https://doi.org/10.3390/nano9050804
URIhttp://hdl.handle.net/10261/182949
DOIhttp://dx.doi.org/10.3390/nano9050804
E-ISSN2079-4991
Appears in Collections:(CIN2) Artículos
Files in This Item:
File Description SizeFormat 
Modification_Rodriguez_Art2019.pdf1,91 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.