NDLI: Synthesis and characterisation of silver nanoparticles using leaf extract of Artemisia afra and their in vitro antimicrobial and antioxidant activities

Content Provider	IET Digital Library
Author	Elemike, Elias E. Onwudiwe, Damian C. Ekennia, Anthony C. Jordaan, Anine
Abstract	In this study, the conversion of silver ions into ∼30.74 nm sized silver nanoparticles (AgNPs) was achieved in 30 min at a reaction temperature of 80–90°C in aqueous leaf extract of Artemisia afra. The synthesised AgNPs showed surface plasmon resonance in the range of 423–438 nm. Spherical and face-centred cubic nanoparticles were confirmed by transmission electron microscope (TEM) and X-ray diffraction (XRD) analysis, respectively. Fourier transform infra-red (FTIR) results indicated that the obtained nanoparticles were stabilised and capped through the carbonyl and carboxylate ion groups possibly from flavonoids, terpenoids, phenolics and esters content of the extracts. In addition, the AgNPs were assessed for their biological potentials against some microbes and, also, their free radical scavenging ability was established. The AgNPs exhibited interesting antimicrobial and antioxidant properties better than the aqueous extract of A. afra.
Starting Page	722
Ending Page	726
Page Count	5
ISSN	17518741
Volume Number	12
e-ISSN	1751875X
Issue Number	Issue 6, Sep (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-nbt/12/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-nbt.2017.0297
Journal	IET Nanobiotechnology
Publisher Date	2018-02-27
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Alloys Antibacterial Activity Antimicrobial Property Antioxidant Property Aqueous Leaf Extract Artemisia Afra Carbonyl Ion Group Carboxylate Ion Group Collective Excitations (surface States) Esters Face-centred Cubic NanoParticle Flavonoids Fourier Transform Infrared Spectra Free Radical Scavenging FTIR Spectra Infrared And Raman Spectra in Metals Microorganisms Nanofabrication Nanoparticle Nanotube And Nanostructured Material Optical Property of Metals And Metallic Alloy Phenolics Reaction Temperature Semimetals Silver Compound Silver Ion Conversion Silver NanoParticle Spherical NanoParticle Structure of Solid Clusters Surface Plasmon Polariton Propagation Property TEM Temperature 80 DegC to 90 DegC Terpenoids Time 30.0 Min Transmission Electron Microscopy Ultraviolet Spectra Visible And Ultraviolet Spectra of Metals Visible Spectra X-Ray Diffraction XRD
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering Biotechnology

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