Abstract
A simple, environmentally friendly and cost-effective method has been developed to synthesize silver nanoparticles (AgNPs) using tea leaf extract. We have studied the effects of the tea extract dosage, reaction time and reaction temperature on the formation of AgNPs. The AgNPs were synthesized using silver nitrate and tea extract, and the reaction was carried out for 2h at room temperature. The synthesized AgNPs were characterized using transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analyzer, and zeta potential analyzer. The synthesized AgNPs were nearly spherical, with the sizes ranging from 20 to 90nm. FT-IR spectral analysis indicated the tea extract acted as the reducing and capping agents on the surface of AgNPs. Furthermore, the study of silver ion release from the tea extract synthesized AgNPs showed a good stability in terms of time-dependent release of silver ions. In addition, the antibacterial activity of AgNPs was determined by monitoring the growth curve and also by the Kirby-Bauer disk diffusion method. Due to the larger size and less silver ion release, the AgNPs synthesized by tea extract showed low antibacterial activity against Escherichia coli.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
