Kinetics of copper nanoparticle precipitation in phosphate glass: An isothermal plasmonic approach

Mariana Sendova, José A. Jiménez, Robert Smith, Nicholas Rudawski

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

The kinetics of copper nanoparticle (NP) precipitation in melt-quenched barium-phosphate glass has been studied by in situ isothermal optical micro-spectroscopy. A spectroscopically based approximation technique is proposed to obtain information about the activation energies of nucleation and growth in a narrow temperature range (530-570°C). Pre-plasmonic and plasmonic NP precipitation stages are identified separated in time. The process as a whole is discussed employing classical nucleation/growth theory and the Kolmogorov-Johnson-Mehl-Avrami phase change model. Activation energies of 3.9(7) eV and 2.6(5) eV have been estimated for the pre-plasmonic and plasmonic spectroscopically assessed stages, respectively. High resolution transmission electron microscopy, differential scanning calorimetry, and Raman spectroscopy were used as complementary techniques for studying the nanoparticulate phase and glass host structure. An empirical linear dependence of the diffusion activation energy on the glass transition temperature with broad applicability is suggested.

Original languageEnglish (US)
Pages (from-to)1241-1246
Number of pages6
JournalPhysical Chemistry Chemical Physics
Volume17
Issue number2
DOIs
StatePublished - 2015
Externally publishedYes

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Kinetics of copper nanoparticle precipitation in phosphate glass: An isothermal plasmonic approach'. Together they form a unique fingerprint.

  • Cite this