Precipitation of silver nanoparticle within silicate glassy matrix via Nd:YAG laser for biomedical applications

Abstract

Nanosecond Nd:YAG laser technique as a unique method was adopted for the precipitating of silver nanoparticles within a bulk glass material. Soda-lime silica glass of nominal composition 75SiO 2 .15Na 2 O.10CaO (mol %) and other samples containing 0.25, 0.50, 1.00 g per batch overweight silver nitrate were successfully synthesized via traditional melt quenching route. Synthesized samples were subjected to Nd:YAG laser irradiation. Upon laser irradiation, a noticeable shift of color was detected inside the regions of the silicate glasses which was due to the development of silver nanoparticles. XRD patterns indicate the decrease in the characteristics of two halos at about 27° and 44° with increasing the precipitated AgNPs content inside the silicate glassy matrix. FT-IR spectra show minor changes in the fingerprint region attributed to the rearrangement of silver ion within the glassy matrix. The optical absorption spectra confirm the formation of red shift in the band position at 420 nm which have been obtained with increasing the content of silver nanoparticle precipitated in the silicate glasses. The morphological investigation according to HR-TEM and FE-SEM micrographs confirms silver nanoparticles precipitated in the silicate glasses after laser irradiation. Studied antibacterial activity against pathogenic grams indicates great enhancement with increasing precipitated silver nanoparticles content within the silicate glasses and suggests their suitability for different biomedical applications. • AgNPs have been precipitated in silicate glasses via Nd:YAG Laser. • XRD and FT-IR results confirmed the formation of AgNPs participate in the silicate glass samples. • UV–Visible spectra confirm the formation of AgNPs through Surface Plasmon. • The morphological investigation confirm the precipitation of silver within the samples after laser irradiation. • In vitro antimicrobial, increasing of AgNPs content result in the increase of the diameter zone and activity index.