Jump to main content
Jump to site search

Issue 2, 2016
Previous Article Next Article

Cyclodextrin encapsulated monometallic and inverted core–shell bimetallic nanoparticles as efficient free radical scavengers

Author affiliations

Abstract

An effective method for the synthesis of monometallic and inverted core–shell bimetallic nanoparticles of silver and gold using four different cyclodextrins (α-CD, β-CD, γ-CD or HP β-CD) in aqueous alkaline medium at room temperature, stable for several months and having radical scavenging activity is reported. UV-visible absorbance spectra showed surface plasmon absorption maxima at 407 and 528 nm, for silver and gold respectively. The inverted core–shell bimetallic nanoparticles showed absorption maxima between the peaks corresponding to pure silver and pure gold nanoparticles & changed linearly with increasing concentration of shell metal precursor in the bimetallic nanoparticles. TEM showed the presence of uniform spherical particles in the range of 12–14 nm size and incase of bimetallic nanoparticles shows the inverted core–shell nanostructures in the range of 15–17 nm. All the encapsulated nanoparticles showed radical scavenging behavior as observed from the rapid quenching of the DPPH light absorption.

Graphical abstract: Cyclodextrin encapsulated monometallic and inverted core–shell bimetallic nanoparticles as efficient free radical scavengers

Back to tab navigation

Publication details

The article was received on 21 Sep 2015, accepted on 24 Nov 2015 and first published on 30 Nov 2015


Article type: Paper
DOI: 10.1039/C5NJ02511G
Author version
available:
Download author version (PDF)
New J. Chem., 2016,40, 1396-1402

  •   Request permissions

    Cyclodextrin encapsulated monometallic and inverted core–shell bimetallic nanoparticles as efficient free radical scavengers

    V. I. Bhoi, S. Kumar and C. N. Murthy, New J. Chem., 2016, 40, 1396
    DOI: 10.1039/C5NJ02511G

Search articles by author

Spotlight

Advertisements