Abstract
In this paper, the biosynthesis of silver nanoparticles (AgNPs) using Mimosa pudica extract is discussed. Mimosa pudica leaves extract using water as solvent was used as bio-reductor to an aqueous solution of silver nitrate (AgNO3) and in order to accelerate the reduction, microwave irradiation method was applied. The AgNPs obtained were characterized using UV-Vis spectrophotometry, FTIR spectrophotometry, XRD, SEM-EDX, and particle size analysis based on dynamic scattering method. Effect of preparation method to the formation of AgNPs is also evaluated in antibacterial activity towards E.coli and P. aeruginosa. Rapid and ecofriendly biosynthesis of stable silver nanoparticles was observed in this study. The characterization results and antibacterial assay indicated the uniform and smaller particle size of AgNPs obtained by using microwave method and positively enhance the antibacterial activity against tested bacteria.
Highlights
At present time nanoscience including nanochemistry becomes the main growing topics for many applications
In order to enhance the effectivity of the use of Mimosa pudica leaf extract in the synthesis of AgNPs, this research is aimed to apply microwave irradiation method in the synthesis
It is visually a visible color change from transparent to brown after microwave irradiation while a lighter color appears by aging for 24 h
Summary
At present time nanoscience including nanochemistry becomes the main growing topics for many applications. Such developments were attempted within the scheme of nanotechnology for instance designing AgNPs size with the higher the antibacterial activity (Dos Santos et al, 2014; Firdhouse & Lalitha, 2015).
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