Green preparation and characterization of silver nanocolloids used as antibacterial material in soap

Abstract

This study aimed to assess the characteristics, including morphology, physicochemical properties, and antibacterial properties, of silver nanocolloids obtained by D-glucose reduction. Silver nanoparticles were synthesized in accordance with the principles of green chemistry using D-glucose as a reductor. The obtained nanostructures were characterized by UV–vis spectroscopy, transmission electron microscopy, and dynamic light scattering. Stability tests performed after 1 month of storage revealed that the colloids prepared with and without polyvinylpyrrolidone as a stabilizer had the same properties. Distribution of the nanoparticles was tested using inductively coupled plasma mass spectrometry by doping the silver colloids into a natural soap mass. The antibacterial activity of the soap containing silver nanoparticles was tested on dirty hands. The antibacterial activity test demonstrated that the novel green soap materials improved with D-glucose-reduced silver nanoparticles possessed better antibacterial properties than a pure soap, and thus, they could be recommended for quotidian use by dermatological patients.

Production of a thermoplastic polyurethane/silver nanoparticles 3D filament with antiviral properties to combat SARS‐CoV‐2

“…26 An improvement in the mechanical properties and anti-swelling property of the nanocomposites was expected, attributed to the dipolar bonds generated between Ag + and groups such as -NH and -COOin TPU, however, these interactions were not observed by FTIR which would justify these results. 23 This lack of interaction between Ag + and the polymer matrix is due to the additive surface treatment of AgNPs with polymers.…”

“…Considering that approximately 5,000 different nanoparticles have been identified and synthesized to date, AgNPs have been extensively exploited and proven in various applications. 22 Some examples include sprayable waterborne polyurethane coatings, 17 soap, 23 and the application of a variety of antiviral agents. 24 F I G U R E 1 Schematic representation of the polyurethane formation, showing the soft and hard segments.…”