Revealing oxidation kinetics of dielectric-embedded Ag nanoparticles via in situ optical microspectroscopy

J. A. Jiménez, M. Sendova, K. McAlpine

Research output: Contribution to journalArticle

Abstract

The oxidation kinetics of Ag nanoparticles (NPs) embedded in an aluminum oxide film deposited on quartz have been assessed via an in situ real-time monitoring of plasmonic evolution during thermal processing in air. A temperature-dependent exponential decay in the peak intensity of Ag NPs' absorption was revealed, which was analyzed through first-order kinetics. An activation energy of 3.28 (±0.27) × 10 4 J mol -1 was estimated in good agreement with the oxidative dissolution of similar-sized Ag NPs in liquid phase reported by Ho et al. [11]. Results are discussed in the context of mechanistic parallelisms and physico-chemical interactions in the air-atmosphere/nanocomposite-film/substrate system.

Original languageEnglish (US)
Pages (from-to)107-112
Number of pages6
JournalChemical Physics Letters
Volume523
DOIs
StatePublished - Jan 27 2012
Externally publishedYes

Fingerprint

Nanoparticles
Oxidation
nanoparticles
oxidation
Kinetics
kinetics
Quartz
Nanocomposite films
Aluminum Oxide
air
Air
Oxide films
oxide films
nanocomposites
dissolving
Dissolution
liquid phases
quartz
aluminum oxides
Activation energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Revealing oxidation kinetics of dielectric-embedded Ag nanoparticles via in situ optical microspectroscopy. / Jiménez, J. A.; Sendova, M.; McAlpine, K.

In: Chemical Physics Letters, Vol. 523, 27.01.2012, p. 107-112.

Research output: Contribution to journalArticle

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