The influence of synthesis conditions on the film morphology of chitosan-stabilized silver nanoparticles

Abstract

A strategy for preparing chitosan-stabilized silver nanoparticles (NPs) is presented in this work. Silver nanoparticles were obtained in the presence of Bombyx mori chitosan (CS) under the following conditions: Na3C6H5O7/Ag+ = 0.736–4.416 and CS/Ag+ = 20 mol. It was revealed that there is a correlation between these synthesis conditions and the size of the nanoparticles. When the concentration of sodium citrate is increased, some of the citrate is involved in recovery, and the other part, along with the chitosan, is involved in NP stabilization. X-ray diffraction analysis established signals corresponding to Ag NPs at 2Θ = 38.40, 43, 64.0, 78 and 82°. The size and distribution of the silver NPs were studied by microscopic methods, and the spherical particles were 15–300 nm, and the needle-like particles were 1–8 nm. CS-stabilized silver nanoparticles have biological activity properties and can be used in the preparation of cosmetology.