Eco-friendly preparation of zinc oxide nanoparticles using Tabernaemontana divaricata and its photocatalytic and antimicrobial activity

The present work reports the green synthesis of Zinc Oxide Nanoparticles (ZnO NPs) using aqueous Tabernaemontana divaricata green leaf extract. ZnO NPs have been characterized by X-ray diffraction (XRD), Ultra Violet–Visible (UV–Vis) studies, Scanning Electron Microscopy (SEM), Transmission Electron...

Full description

Saved in:
Bibliographic Details
Published in:Journal of photochemistry and photobiology. B, Biology Biology, 2018-04, Vol.181, p.53-58
Main Authors: Raja, A., Ashokkumar, S., Pavithra Marthandam, R., Jayachandiran, J., Khatiwada, Chandra Prasad, Kaviyarasu, K., Ganapathi Raman, R., Swaminathan, M.
Format: Article
Language:English
Subjects:
Anti-Bacterial Agents - chemical synthesis
Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - pharmacology
Antibacterial activity
Antimicrobial activity
Bacteria
Bioactive compounds
Biodegradation
Catalysis
Catalytic activity
Color removal
Decontamination
Degradation
Dyes
E coli
Escherichia coli - drug effects
Flavonoids
Fourier transforms
Green Chemistry Technology
Green synthesis
Infrared radiation
Leaves
Metal Nanoparticles - chemistry
Methylene blue
Methylene Blue - chemistry
Microbial Sensitivity Tests
Microscopy, Electron, Scanning
Microscopy, Electron, Transmission
Nanoparticles
Pattern analysis
Phenolic acids
Phenols
Photocatalysis
Photocatalytic activity
Photolysis - radiation effects
Plant Extracts - chemistry
Salmonella
Salmonella paratyphi A - drug effects
Scanning electron microscopy
Spectroscopy, Fourier Transform Infrared
Staphylococcus aureus - drug effects
Steroid hormones
Steroids
Sunlight
T. divaricata
Tabernaemontana - chemistry
Tabernaemontana - metabolism
Tabernaemontana divaricata
Terpenes
Thermogravimetry
Transmission electron microscopy
Wurtzite
X-Ray Diffraction
Zinc
Zinc oxide
Zinc Oxide - chemistry
Zinc oxide nanoparticles
Zinc oxides
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The present work reports the green synthesis of Zinc Oxide Nanoparticles (ZnO NPs) using aqueous Tabernaemontana divaricata green leaf extract. ZnO NPs have been characterized by X-ray diffraction (XRD), Ultra Violet–Visible (UV–Vis) studies, Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and Fourier Transform–Infra Red (FT–IR) analysis. XRD pattern analysis confirms the presence of pure hexagonal wurtzite crystalline structure of ZnO. The TEM images reveal the formation of spherical shape ZnO NPs with the sizes ranging from 20 to 50 nm. The FT–IR analysis suggests that the obtained ZnO NPs have been stabilized through the interactions of steroids, terpenoids, flavonoids, phenyl propanoids, phenolic acids and enzymes present in the leaf extract. Mechanism for the formation of ZnO NPs using Tabernaemontana divaricata as bioactive compound is proposed. As prepared ZnO NPs reveals antibacterial activity against three bacterial strains, Salmonella paratyphi, Escherichia coli and Staphylococcus aureus. The ZnO NPs shows higher antibacterial activity against S. aureus and E. coli and lesser antibacterial activity against S. paratyphi compared to the standard pharmaceutical formulation. Photocatalytic activity of synthesized ZnO NPs was analyzed for methylene blue (MB) dye degradation with sunlight. Almost complete degradation of dye occurred in 90 min. This nano-ZnO, prepared by eco-friendly method will be much useful for dye removal and bacterial decontamination. •Synthesis of ZnO nanoparticles from T. divaricata leaf extract is reported first time.•The ZnO NPs has a strong antimicrobial and Photocatalytic activities.•The formation mechanism of ZnO nanoparticles using T. divaricata as bioactive compound is proposed.•Eco-friendly and economical synthesis of ZnO Nanoparticles.
ISSN:1011-1344
1873-2682
DOI:10.1016/j.jphotobiol.2018.02.011