Synthesis and antibacterial effects of aqueous colloidal solutions of silver nanoparticles using aminocellulose as a combined reducing and capping reagent

Abstract

A simple, environmentally friendly and cost-effective synthetic method has been developed to prepare highly stable aqueous colloidal solutions of small (2–14 nm) silver nanoparticles using aminocellulose (AMC) as a combined reducing and capping reagent. The effects of temperature, reaction time, the concentration of silver nitrate and AMC are systematically investigated and the reaction conditions optimised. The AMC-stabilized silver nanoparticles can be deposited on the surfaces of cotton fibres and microporous cellulose acetate (CA) filters, without affecting the permeability of the filters. The AMC-stabilized aqueous silver colloidal solutions and silver nanoparticle coated CA filters and cotton fibres all show significant antibacterial action against all the bacterial isolates tested, with the antibacterial levels between “Sufficient” and “Good”, although some of solutions have been stored at room temperature for 18 months

Hydrogen peroxide sensing and cytotoxicity activity of Acacia lignin stabilized silver nanoparticles

“…Metal nanoparticles have potential applications in the fields of electronics, environment, catalytic and in bio-sensing [2][3][4]. One crucial aspects of nanotechnology concerns the improvement of quick and consistent experimental protocols for the synthesis of nanomaterials.…”

Tailor-made functional surfaces based on cellulose-derived materials

“…3b) (Fernandes et al 2014). Aminocellulose can also be used as a reducing agent for Ag nanoparticles, and aqueous suspensions of Ag nanoparticles stabilized by aminocellulose exhibited significant antibacterial activities against E. coli, Acinetobacter baumannii, and Stenotrophomonas maltophilia (Cheng et al 2013).…”

Gold nanoparticles in the engineering of antibacterial and anticoagulant surfaces

“…It is known that the mode of action of gold nanoparticles (AuNPs) against microorganism is very similar to those of silver NPs (Bhattacharya & Mukherjee, 2008). In addition, the use of bio-and hemocompatible polysaccharides as capping/stabilizing agents (Cheng, Betts, Kelly, Schaller, & Heinze, 2013;Sacarescu, Simionescu, & Sacarescu, 2011) for NPs allows for applying them in materials where simultaneous anticoagulant activity is required (Breitwieser et al, 2013a,b;Croes, Stobberingh, Stevens, Knetsch, & Koole, 2011;Huang & Yang, 2004).…”