12-15 July 2011
Saint George Hotel
Africa/Johannesburg timezone
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Fabrication of MWCNT/NiO nanocomposite thin films for optically selective solar absorbers

Presented by Dr. Kittessa RORO on 13 Jul 2011 from 12:30 to 12:45
Type: Oral Presentation
Session: Applied
Track: Track F - Applied and Industrial Physics


<p>Carbon nanoparticles embedded in thin NiO layers have shown an increasing interest for application in spectrally selective solar absorbers that can be used for low temperature photothermal applications. It is expected that the size and shape of carbon nanoparticles in the NiO matrix is extremely important in tuning the selectivity of the coatings. In this work, multiwall carbon nanotubes (MWCNT)/NiO composite films of different CNT contents were prepared by sol-gel technique, and their structural and optical properties were investigated by scanning electron microscopy, x-ray diffraction, Raman spectroscopy, UV-Vis spectroscopy and emissometer. Preliminary durability study on these coatings will also be presented. The results demonstrate promising spectrally selective properties indicating that the CNT/NiO composite is an excellent choice for solar water heating applications.

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Room: Acro3

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