@article{Pelaez2013-09-13Enhan-26673,
  year={2013},
  doi={10.1088/0957-4484/24/36/365702},
  title={Enhanced reactivity and related optical changes of Ag nanoparticles on amorphous Al<sub>2</sub>O<sub>3</sub> supports},
  number={36},
  volume={24},
  issn={0957-4484},
  journal={Nanotechnology},
  author={Peláez, Ramón Javier and Castelo, Alazne and Afonso, Carmen and Borrás, Ana Isabel and Espinós, Juan P. and Riedel, Stephen and Leiderer, Paul and Boneberg, Johannes},
  note={Article Number: 365702}
}

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    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2014-03-12T07:33:17Z</dc:date>
    <dc:contributor>Afonso, Carmen</dc:contributor>
    <dc:contributor>Castelo, Alazne</dc:contributor>
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    <dc:creator>Castelo, Alazne</dc:creator>
    <dc:creator>Boneberg, Johannes</dc:creator>
    <dcterms:bibliographicCitation>Nanotechnology ; 24 (2013), 36. - 365702</dcterms:bibliographicCitation>
    <dc:creator>Afonso, Carmen</dc:creator>
    <dc:contributor>Leiderer, Paul</dc:contributor>
    <dc:creator>Peláez, Ramón Javier</dc:creator>
    <dcterms:title>Enhanced reactivity and related optical changes of Ag nanoparticles on amorphous Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; supports</dcterms:title>
    <dc:contributor>Riedel, Stephen</dc:contributor>
    <dc:contributor>Boneberg, Johannes</dc:contributor>
    <dc:creator>Espinós, Juan P.</dc:creator>
    <dc:creator>Borrás, Ana Isabel</dc:creator>
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    <dcterms:abstract xml:lang="eng">Pairs of samples containing Ag nanoparticles (NPs) of different dimensions have been produced under the same conditions but on different substrates, namely standard glass slides and a thin layer of amorphous aluminum oxide (a-Al2O3) on-glass. Upon storage in ambient conditions (air and room temperature) the color of samples changed and a blue-shift and damping of the surface plasmon resonance was observed. The changes are weaker for the samples on-glass and tend to saturate after 12 months. In contrast, the changes for the samples on a-Al2O3 appear to be still progressing after 25 months. While x-ray photoelectron spectroscopy shows a slight sulfurization and negligible oxidation of the Ag for the on-glass samples upon 25 months aging, it shows that Ag is strongly oxidized for the on a-Al2O3 samples and sulfurization is negligible. Both optical and chemical results are consistent with the production of a shell at the expense of a reduction of the metal core dimensions, the latter being responsible for the blue-shift and related to the small (&lt;10 nm initial diameter) of the NPs. The enhanced reactivity of the Ag NPs on the a-Al2O3 supports goes along with specific morphological changes of the Ag NPs and the observation of nitrogen.</dcterms:abstract>
    <dc:contributor>Espinós, Juan P.</dc:contributor>
    <dc:creator>Riedel, Stephen</dc:creator>
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    <dc:creator>Leiderer, Paul</dc:creator>
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    <dc:contributor>Peláez, Ramón Javier</dc:contributor>
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    <dc:contributor>Borrás, Ana Isabel</dc:contributor>
    <dcterms:issued>2013-09-13</dcterms:issued>
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