Abstract
The production of cheap and effective compound for medicinal application is a major challenge for scientific community. So, several biological materials have been explored for the possible application in material synthesis which are useful in biomedical uses. Here, biomolecules from green tea leaves were functionalized on the surface of silicon dioxide nanoparticles (GSiO(2) NPs). Next, the decoration silver (Ag) NPs on the surface of the GSiO(2) NPs was observed in very short time of incubation in aqueous AgNO(3). Ultraviolet-visible spectroscopy confirmed the formation of Ag NPs and the high-resolution transmission and scanning electron microscopies confirmed the decoration of spherical Ag NPs of 10 to 15 nm size on the surface of GSiO(2) NPs. The antimicrobial activity of the Ag-GSiO(2) NPs was determined against Staphylococcus aureus and Escherichia coli. The Ag-GSiO(2) NPs displayed sustainable antimicrobial activity compared to Ag ions. The results indicate the potential value of Ag-GSiO(2) NPs in surgical material and food processing.