One-pot photochemical synthesis of silver nanodisks using a conventional metal-halide lamp

Byung Ho Kim, Jae-Seung Lee

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22 Citations (Scopus)

Abstract

One-pot photochemical synthesis of highly monodispersed silver nanodisks (AgNDs) has been developed using a conventional metal-halide lamp. The synthetic conditions, including the roles of each reactant, were thoroughly investigated to disclose what actually determines the quality of the AgNDs. Importantly, to efficiently control the size of the AgNDs under polychromatic conditions at a constant reaction time, we developed a "dilution-control" method by combining the conventional seed-mediated method and our photochemical growth, and we successfully controlled the size of the AgNDs from 15 nm to over 60 nm. We further investigated the chemical properties of the AgND surfaces, which clearly demonstrated their distinctive affinities with halide ions and corresponding optical changes depending on halide species, and their catalytic activity for the reduction of 4-nitrophenol. Most of all, the cost-effective instrumentation, in combination of the large-scale synthesis, possesses a number of advantages over the conventional costly laser-based or multiple LED-based synthesis, which would be useful for the further investigation of the photochemical synthesis of other anisotropic silver nanomaterials.

Original languageEnglish
Pages (from-to)678-685
Number of pages8
JournalMaterials Chemistry and Physics
Volume149
DOIs
Publication statusPublished - 2015 Jan 15

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Keywords

  • Nanostructures
  • Optical properties
  • Photochemical synthesis
  • Silver nanoparticle
  • Surface plasmon resonance

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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