Encapsulation of Biosynthesized Nanosilver in Silica Composites for Sustainable Antimicrobial Functionality.

ABSTRACT: Silver nanoparticles (AgNPs) have become known as a broad-spectrum antimicrobial agent. The antimicrobial activity of AgNPs is dependent on the particle size and the dispersion status. In this study, a simple and effective approach is developed for sequestering the biosynthesized AgNPs in silica composites during the gel formation of MCM-41. Composites with different Ag concentrations of 0.034% (Ag1@MCM-41), 0.151% (Ag2@MCM-41), and 0.369% (Ag3@MCM-41) are synthesized and then heated at 400 °C to produce Ag1@MCM-41H, Ag2@MCM-41H, and Ag3@MCM-41H, respectively. The samples are characterized by flame atomic absorption spectrometry, Fourier-transform infrared spectroscopy, X-ray diffraction, N₂ physisorption, scanning electron microscopy, transmission electron microscopy, and therm

SUBMITTER: Abou-El-Sherbini KS 

PROVIDER: S-EPMC6607213 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature