ZnO Nanoparticles (ZnO-NPs): Synthesis Using Tithonia diversifolia, Characterization and in-vitroAntimicrobial Bioassays
Loading...
Date
2020
Authors
Wafula, Bonface Juma
Masika, Eric
Onindo, Charles
Journal Title
Journal ISSN
Volume Title
Publisher
IOSR Journal of Applied Chemistry
Abstract
ZnO is among leading metal oxide nanoparticles (MO-NPs). The conventional physical and chemical synthesis
protocols require use of sophisticated equipment and many chemicals which may be hazardous. In this research,
ZnO-NPs were prepared via a straightforward environmentally benign technique; employing Tithonia
diversifolia as a reductant. Zinc nitrate solution was mixed with TDLE in the ratio of 3:1 respectively and
incubated in an ultra-sonication bath. The precipitates were centrifuged at 5000 rpm for 15 minutes followed
by washing with distilled water. A peak at 374 nm, as measured by UV-Vis, confirmed formation of nanoZnO.Presence of ZnO was shown by a new peak at 668.35 cm
-1
in the ZnO-TDLE FTIR spectrum. The
crystalline size of the sample was estimated as 20.91 nm by Debye-Scherer formula. Identification and
quantification of elements was performed by X-Ray Fluorescence (XRF) analysis, which showed 91.823% Zn in
the sample. The synthesized nano-ZnO showed promising antibacterial activity. The bioactive nature of ZnONPs, as demonstrated in this research, puts the nano-ZnO at pole position for the formulation of novel
antimicrobial agents
Description
A research article published in IOSR Journal of Applied Chemistry
Keywords
antimicrobial activity, Tithonia diversifolia, XRD, X-Ray Fluorescence, ZnO-NPs
Citation
Wafula, B. J., Masika, E., & Onindo, C. ZnO Nanoparticles (ZnO-NPs): Synthesis Using Tithonia diversifolia, Characterization and in-vitroAntimicrobial Bioassays.