Au and NiO nanocrystals doped into porous sol-gel SiO2 films and the effect on optical CO detection. Buso, D., Guglielmi, M., Martucci, A., Mattei, G., Mazzoldi, P., Sada, C., & Post, M. NANOTECHNOLOGY, 17:2429–2433, IOP Publishing Ltd, 2006. doi abstract bibtex Thin-film composites comprised of NiO and NiO/Au nanoparticles in a porous SiO2 matrix have been prepared using the sol–gel technique. When at elevated temperatures (200 ◦C < T < 350 ◦C) and exposed to carbon monoxide, the films undergo reversible changes in optical transmittance at wavelengths in the visible–near IR region. For NiO composite films heated at 330 ◦C and exposed to 1% CO in air, there is an increase in transmittance which approaches 2–4% over most of the visible range. For NiO/Au composite films the transmittance increase exhibits a wavelength dependence, with a maximum change which is close to 6% at λ ≈ 630 nm and which is close to zero in the Au plasmon resonance range (λ ≈ 550 nm).
@article{
11577_2443511,
author = {Buso, Dario and Guglielmi, Massimo and Martucci, Alessandro and Mattei, Giovanni and Mazzoldi, Paolo and Sada, Cinzia and Post, Ml},
title = {Au and NiO nanocrystals doped into porous sol-gel SiO2 films and the effect on optical CO detection},
year = {2006},
publisher = {IOP Publishing Ltd},
journal = {NANOTECHNOLOGY},
volume = {17},
abstract = {Thin-film composites comprised of NiO and NiO/Au nanoparticles in a porous SiO2 matrix have been prepared using the sol–gel technique. When at elevated temperatures (200 ◦C < T < 350 ◦C) and exposed to carbon monoxide, the films undergo reversible changes in optical transmittance at wavelengths in the visible–near IR region. For NiO composite films heated at 330 ◦C and exposed to 1% CO in air, there is an increase in transmittance which approaches 2–4% over most of the visible range. For NiO/Au composite films the transmittance increase exhibits a wavelength dependence, with a maximum change which is close to 6% at λ ≈ 630 nm and which is close to zero in the Au plasmon resonance range (λ ≈ 550 nm).},
doi = {10.1088/0957-4484/17/10/001},
pages = {2429--2433}
}
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