Sonochemical deposition of silver nanoparticles on wool fibers

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.

The preparation of alginate–AgNPs composite fiber with green approach and its antibacterial activity

“…In the past few decades, researchers have been interested in the development of using AgNPs in different textile fabrics [10][11][12][13][14][15]. The major research on the functionalization of textile materials with AgNPs is focused on cotton fibers.…”

Preparation of core–shell nanospheres of silica–silver: SiO2@Ag

“…We have recently used PVP as both a reducer and a stabilizer in the preparation of silver nanoparticle colloids, as presented elsewhere [22][23][24]. Silver nanoparticles have also been deposited even on wool in the presence of ammonia, by using power ultrasound without the aid of any coupling agent [26].…”

Experimental characterization and numerical simulation of the anti-biofuling activity of nanosilver-modified feed spacers in membrane filtration

“…Sonochemical deposition has shown promising abilities for coating or embedding nanosilver into several materials including polymers, glass, wool and even metals [31][32][33][34][35][36].…”