Scientific Results

Optical properties of mixed nanofluids containing carbon nanohorns and silver nanoparticles for solar energy applications

Year: 2015

Authors: Sani E., Di Ninni P., Colla L., Barison S., Agresti F.

Autors Affiliation: CNR-INO National Institute of Optics, Largo E. Fermi, 6, Firenze, 50125, Italy; Physics and Astronomy Department, University of Firenze, via P. Sansone 6, Sesto Fiorentino, 50125, Italy; CNR-ITC Construction Technologies Institute, Corso Stati Uniti, 4, Padova, 35127, Italy; CNR-IENI Institute for Energetics and Interphases, Corso Stati Uniti, 4, Padova, 35127, Italy

Abstract: Different kinds of nanofluids show peculiar characteristics. In this work, a mixed nanofluid consisting of single-wall carbon nanohorns and silver nanoparticles aqueous suspensions is prepared and optically characterized, in the perspective to merge the favorable optical characteristics of carbon nanohorn-based nanofluids to the good thermal properties of silver-nanofluids. For the samples, both the spectral extinction and the scattering albedo at discrete wavelengths have been investigated. The silver nanoparticle plasmonic peak in the visible range further improves the overall nanofluid sunlight absorption properties, opening interesting perspectives for using such mixed nanofluids as solar absorber and heat transfer media in solar thermal collectors.

Journal/Review: JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY

Volume: 15 (5)      Pages from: 3568  to: 3573

More Information: The work has been performed under the \”Industria 2015\” funding of the Italian Ministry of Economic Development. Thanks are due to Massimo D\’Uva and Mauro Pucci (INO-CNR) for technical assistance.
KeyWords: Carbon; Carbon nanotubes; Heat transfer; Nanohorns; Nanoparticles; Nanostructures; Optical properties; Silver; Solar absorbers; Solar energy; Suspensions (fluids), Carbon nanohorn; Carbon Nanostructures; Concentrating solar power; Optical characteristics; Silver nanoparticles; Single wall carbon nanohorn; Solar energy applications; Solar thermal collector, Nanofluidics
DOI: 10.1166/jna.2015.9838

Citations: 15
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