SERS detection and antibacterial activity from uniform incorporation of Ag nanoparticles with aligned Si nanowires

Chia Yun Chen, Li Jen Hsu, Po Hsuan Hsiao, Chang Tze Ricky Yu

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We present a facile, reliable and controllable two-steps electroless deposition for uniformly decorating the silver (Ag) nanoparticles (NPs) on the highly aspect ratio of silicon (Si) nanowire arrays. Different from the direct Ag-loading process, which is normally challenged by the non-uniform coating of Ag, the formation of Ag NPs using such innovative electroless process is no longer to be limited at top nanowire surfaces solely; instead, each Ag + /Si interface can initiate the galvanic reduction of Ag + ions, thus resulting in the uniform formation of Ag NPs on the entire Si nanowire arrays. In addition, systematic explorations of surface-enhanced Raman scattering (SERS) capability as well as antibacterial activity of the Ag/Si-incorporated nanostructures were performed, and the optimized Ag loadings on Si nanowire-based substrates along with the kinetic investigations were further revealed, which may benefit their practical applications in sensing, medical and biological needs.

Original languageEnglish
Pages (from-to)197-202
Number of pages6
JournalApplied Surface Science
Volume355
DOIs
Publication statusPublished - 2015 Nov 15

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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