Limits...
Absorption and scattering properties of carbon nanohorn-based nanofluids for direct sunlight absorbers.

Mercatelli L, Sani E, Zaccanti G, Martelli F, Di Ninni P, Barison S, Pagura C, Agresti F, Jafrancesco D - Nanoscale Res Lett (2011)

Bottom Line: Scattered light was found to be not more than about 5% with respect to the total attenuation of light.Both these effects, together with the possible chemical functionalization of carbon nanohorns, make this new kind of nanofluids very interesting for increasing the overall efficiency of the sunlight exploiting device.PACS: 78.40.Ri, 78.35.+c, 78.67.Bf, 88.40.fh, 88.40.fr, 81.05.U.

View Article: PubMed Central - HTML - PubMed

Affiliation: National Institute of Optics, National Council of Research, Firenze, 50125, Italy. elisa.sani@ino.it.

ABSTRACT
In the present work, we investigated the scattering and spectrally resolved absorption properties of nanofluids consisting in aqueous and glycol suspensions of single-wall carbon nanohorns. The characteristics of these nanofluids were evaluated in view of their use as sunlight absorber fluids in a solar device. The observed nanoparticle-induced differences in optical properties appeared promising, leading to a considerably higher sunlight absorption with respect to the pure base fluids. Scattered light was found to be not more than about 5% with respect to the total attenuation of light. Both these effects, together with the possible chemical functionalization of carbon nanohorns, make this new kind of nanofluids very interesting for increasing the overall efficiency of the sunlight exploiting device. PACS: 78.40.Ri, 78.35.+c, 78.67.Bf, 88.40.fh, 88.40.fr, 81.05.U.

No MeSH data available.


Related in: MedlinePlus

Quadratic effective attenuation coefficient as a function of SWCNH concentration (the concentration of non-diluted suspension is 0.1 g/L).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC3211347&req=5

Figure 2: Quadratic effective attenuation coefficient as a function of SWCNH concentration (the concentration of non-diluted suspension is 0.1 g/L).

Mentions: Figure 2 shows the experimental values of the quadratic effective attenuation coefficient as a function of the SWCNH concentration. The absorption coefficient was calculated from the slope of the straight line that best fits the experimental results. The obtained absorption coefficient was εanh = 11.4 mm-1 g/l.


Absorption and scattering properties of carbon nanohorn-based nanofluids for direct sunlight absorbers.

Mercatelli L, Sani E, Zaccanti G, Martelli F, Di Ninni P, Barison S, Pagura C, Agresti F, Jafrancesco D - Nanoscale Res Lett (2011)

Quadratic effective attenuation coefficient as a function of SWCNH concentration (the concentration of non-diluted suspension is 0.1 g/L).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211347&req=5

Figure 2: Quadratic effective attenuation coefficient as a function of SWCNH concentration (the concentration of non-diluted suspension is 0.1 g/L).
Mentions: Figure 2 shows the experimental values of the quadratic effective attenuation coefficient as a function of the SWCNH concentration. The absorption coefficient was calculated from the slope of the straight line that best fits the experimental results. The obtained absorption coefficient was εanh = 11.4 mm-1 g/l.

Bottom Line: Scattered light was found to be not more than about 5% with respect to the total attenuation of light.Both these effects, together with the possible chemical functionalization of carbon nanohorns, make this new kind of nanofluids very interesting for increasing the overall efficiency of the sunlight exploiting device.PACS: 78.40.Ri, 78.35.+c, 78.67.Bf, 88.40.fh, 88.40.fr, 81.05.U.

View Article: PubMed Central - HTML - PubMed

Affiliation: National Institute of Optics, National Council of Research, Firenze, 50125, Italy. elisa.sani@ino.it.

ABSTRACT
In the present work, we investigated the scattering and spectrally resolved absorption properties of nanofluids consisting in aqueous and glycol suspensions of single-wall carbon nanohorns. The characteristics of these nanofluids were evaluated in view of their use as sunlight absorber fluids in a solar device. The observed nanoparticle-induced differences in optical properties appeared promising, leading to a considerably higher sunlight absorption with respect to the pure base fluids. Scattered light was found to be not more than about 5% with respect to the total attenuation of light. Both these effects, together with the possible chemical functionalization of carbon nanohorns, make this new kind of nanofluids very interesting for increasing the overall efficiency of the sunlight exploiting device. PACS: 78.40.Ri, 78.35.+c, 78.67.Bf, 88.40.fh, 88.40.fr, 81.05.U.

No MeSH data available.


Related in: MedlinePlus