Green Synthesized Silver Nanoparticles: A Potential Antibacterial Agent, Antioxidant, and Colorimetric Nanoprobe for the Detection of Hg2+ Ions.

Abstract

Silver nanoparticles (AgNPs) prepared by green synthesis have a lot of potentials in various fields. Among them,as an antioxidant, antibacterial agent, and nanoprobe for the colorimetric detection of mercury (Hg2+) ions is thought to be the most important. The antibacterial, antioxidant, and colorimetric sensing potential of the greenly produced AgNPs utilizingPiper chabastem extract are all predicted in this investigation. By using the disc diffusion method, the antibacterial activity of greenly produced AgNPs are assessed, and the findings are measured from the zone of inhibition (ZOI). It is revealed that theStaphylococcus aureus, Micrococcus spp., Escherichia coli,andPseudomonas aeruginosabacterial strains are significantly resisted by the greenly produced AgNPs. The antioxidant activity test of AgNPs reveals a considerable impact on free radical scavenging havingthe inhibitory concentration (IC 50) is 1.13mL (equivalent to 0.45mg mL-1). Also, with a low limit of detection of 28ppm, the resulting AgNPs are used as highly selective and economical colorimetric sensors for Hg2+detection. The study's findings support the hypothesis thatPiper chabastems can serve as a source for the production of AgNPs with high antibacterial and antioxidant activity and usefulness for simple colorimetric readings of Hg2+.