Facile Synthesis of Silver Nanoparticles Using Lantana trifolia Aqueous Extracts and Their Antibacterial Activity
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Date
2020
Authors
Shigwenya Madivoli, Edwin
Gachoki Kareru, Patrick
Ngure Gachanja, Anthony
Mutuura Mugo, Samuel
Sujee Makhanu, David
Indire Wanakai, Sammy
Gavamukulya, Yahaya
Journal Title
Journal ISSN
Volume Title
Publisher
Journal of Inorganic and Organometallic Polymers and Materials
Abstract
Synthesis of metallic nanoparticles using secondary metabolites present in plant extracts has attracted attention. In this
study, Lantana trifolia aqueous extracts were used to synthesize silver nanoparticles (AgNPs) which were then screened
for their antimicrobial activity. The morphology, size and functional groups present in AgNPs was evaluated using electron
microscopy and Fourier transform infrared spectroscopy (FT-IR). The role of temperature, reaction time and concentration
of precursor ion were evaluated by measuring the surface plasmon resonance of AgNPs using UV–Vis spectroscopy. The
crystal structure, hydrodynamic diameters and redox potential were evaluated using powder X-ray diffractometer (PWXRD),
dynamic light scattering (DLS) and cyclic voltammetry respectively. The data obtained in this study revealed that increase
in the reaction time led to an increase in surface plasmon resonance of AgNPs while the increase in temperature from 20
to 35 ℃ increased the rate of AgNPs synthesis. The XRD diffractogram revealed that the particles were composed of silver
with 2θ = 38.36, 44.428, 54.89, and 57.87, corresponding to the silver crystal planes of (111), (200), (220), and (311). The
diameters of the nanoparticles were between 35 and 70 nm, and they had moderate antimicrobial activity against E. coli, P.
aeruginosa, C. albicans, S. aureus and B. subtilis.
Description
Keywords
Silver nanoparticles, Morphology ·, Antimicrobial activity
Citation
Madivoli, E. S., Kareru, P. G., Gachanja, A. N., Mugo, S. M., Makhanu, D. S., Wanakai, S. I., & Gavamukulya, Y. (2020). Facile synthesis of silver nanoparticles using Lantana trifolia aqueous extracts and their antibacterial activity. Journal of Inorganic and Organometallic Polymers and Materials, 30(8), 2842-2850. https://doi.org/10.1007/s10904-019-01432-5