Sonochemical deposition of silver nanoparticles on wool fibers

Liraz Hadad, Nina Perkas, Yosef Gofer, Jose Calderon-Moreno, Anil Ghule, Aharon Gedanken

Research output: Contribution to journalArticlepeer-review

71 Scopus citations

Abstract

Silver nanoparticles were deposited on the surface of natural wool with the aid of powered ultrasound. The average particle size was 5-10 nm, but larger aggregates of 50-100 nm were also observed. The sonochemical irradiation of a slurry containing wool fibers, silver nitrate, and ammonia in an aqueous medium for 120 min under an argon atmosphere yielded a silver-wool nanocomposite. By varying the gas and reaction conditions, we could achieve control over the deposition of the metallic silver particles on the surface of the wool fibers. The resulting silver-deposited wool samples were characterized with X-ray diffraction, transmission electron microscopy, high-resolution transmission electron microscopy, high-resolution scanning electron microscopy, electron-dispersive X-ray analysis, Brunauer, Emmett, and Teller physical adsorption method, X-ray photoelectron spectroscopy, and Raman and diffused reflection optical spectroscopy. The results showed that the strong adhesion of the silver to the wool was a result of the adsorption and interaction of silver with sulfur moieties related to the cysteine group.

Original languageEnglish
Pages (from-to)1732-1737
Number of pages6
JournalJournal of Applied Polymer Science
Volume104
Issue number3
DOIs
StatePublished - 5 May 2007

Keywords

  • Fibers
  • Irradiation
  • Metal-polymer complexes
  • Nanocomposites
  • Nanolayers
  • Nanoparticles
  • Proteins

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