NDLI: Eco-friendly synthesis of silver and gold nanoparticles with enhanced antimicrobial, antioxidant, and catalytic activities

Content Provider	IET Digital Library
Author	Vijayan, Remya Joseph, Siby Mathew, Beena
Abstract	The present work is emphasised on the bio-fabrication of silver and gold nanoparticles in a single step by a microwave-assisted method using the leaf extract of Synedrella nodiflora as both reducing and stabilising agent. The synthesised nanoparticles are highly stable and show surface plasmon resonance peak at 413 and 535 nm, respectively, for silver and gold nanoparticles in UV–Vis spectrum. The functional group responsible for the reduction of metal ions were obtained from Fourier transform infrared spectroscopy. The crystalline nature of nanoparticles with face-centred cubic geometry was confirmed by the X-ray diffraction and selected area electron diffraction patterns. The morphology and sizes of the silver and gold nanoparticles were obtained from transmission electron microscopy images. The nanoparticles exhibit effective antimicrobial activities against various pathogenic strains. These antimicrobial properties were analysed by employing agar well diffusion method. The nanoparticles show significant antioxidant properties, and it was determined using 2, 2-diphenyl-1-picrylhydrazyl assay. The nanoparticles also show potent catalytic activity in the degradation of anthropogenic pollutant dyes Congo red and eosin Y by excess NaBH4. Thus, the current study demonstrates the potential use of S. nodiflora as a reducing and stabilising agent for the synthesis of silver and gold nanoparticles and their relevance in the field of biomedicine and catalysis.
Starting Page	850
Ending Page	856
Page Count	7
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.2017.0311
Journal	IET Nanobiotechnology
Publisher Date	2018-04-06
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	2,2-diphenyl-1-picrylhydrazyl Assay Agar Well Diffusion Method Anthropogenic Pollutant Dyes Antibacterial Activity Antimicrobial Activities Antioxidant Activities Area Electron Diffraction Pattern Biofabrication Biomedical Material Catalysis Catalytic Activities Congo Red Crystal Growth from Solution Dyes Electron Diffraction Electron Diffraction Pattern Eosin Y Face-centred Cubic Geometry Field Emission Electron Microscopy Fourier Transform Infrared Spectroscopy Fourier Transform Spectra Gold Gold NanoParticle Infrared Spectra Microorganisms Nanocomposite Nanofabrication Nanomedicine Nanoparticle Nanotechnology Application in Biomedicine Particle Size Pathogenic Strains Reduction (Chemical) Scanning Electron Microscopy Silver Compound Silver NanoParticle Surface Plasmon Polariton Propagation Property Synedrella Nodiflora Synthesised NanoParticle Transmission Electron Microscopy Transmission Electron Microscopy Image Ultraviolet Spectra UV–Vis Spectrum Visible Spectra Wavelength 413.0 Nm Wavelength 535.0 Nm X-Ray Diffraction
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering Biotechnology

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