AuPd bimetallic nanoparticles: Single step biofabrication, structural characterization and catalytic activity

The room temperature biofabrication of AuPd-NPs using aqueous leaf extract of Delonix regia was reported. The nature, morphology and size of nanoparticles were analyzed using UV-visible spectroscopy, DLS, XRD, TEM and EDX techniques. Nearly spherical crystalline AuPd-NPs were synthesized within size range of 3-31 nm. Appearance of broad intense reflection at 39.29 degrees position, nearer to the mean of Pd (40.26 degrees) and Au (38.37 degrees) reflections suggested fabrication of AuPd-NPs. Furthermore, as-formed AuPd-NPs showed recyclable catalytic efficiency towards the reduction of 3-nitroaniline and it remained at about 93% even after recycling for 5 consecutive cycles in terms of normalized activity parameter. (C) 2015 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.