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Au and NiO nanoparticles dispersed inside porous SiO2 sol-gel film: correlation between localized surface plasmon resonance and structure upon thermal annealing

Published online by Cambridge University Press:  05 April 2012

Enrico Della Gaspera ,
Giovanni Mattei  and
Alessandro Martucci
Enrico Della Gaspera
Affiliation:
Università di Padova, Dipartimento di Ingegneria Industriale, Padova, Italy
Giovanni Mattei
Affiliation:
Università di Padova, Dipartimento di Fisica e Astronomia, Padova, Italy
Alessandro Martucci*
Affiliation:
Università di Padova, Dipartimento di Ingegneria Industriale, Padova, Italy
*
*Email: alex.martucci@unipd.it
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Abstract

The favorable lattice matching between Au and NiO crystals made possible the growth of unique cookie-like nanoparticles (25 nm mean diameter) inside a porous SiO2 film after annealing at 700 °C. The unusual aggregates result from the coupling of well distinguishable Au and NiO hemispheres, which respectively face each other through the (100) and (200) lattice planes. The thermal evolution of the Au and NiO nanoparticles structure has been studied by high resolution transmission electron microscopy and UV-visible absorption spectroscopy and correlated with the evolution of the Au surface plasmon resonance peak.

Keywords

nanostructureAusol-gel
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1449: Symposium BB – Solution Synthesis of Inorganic Films and Nanostructured Materials , 2012 , mrss12-1449-bb04-09
Copyright
Copyright © Materials Research Society 2012

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References

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