The AgcorePdshell bimetallic nanoparticles: simple biological synthesis and characterization


Farhadi K., Sabzi R. E. , Forough M. , Pourhossein A., Molaei R., Ebrahimi R.

JOURNAL OF THE IRANIAN CHEMICAL SOCIETY, vol.12, no.11, pp.2015-2021, 2015 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 12 Issue: 11
  • Publication Date: 2015
  • Doi Number: 10.1007/s13738-015-0676-y
  • Title of Journal : JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
  • Page Numbers: pp.2015-2021
  • Keywords: Biosynthesis, Bimetallic, Ag-Pd nanoparticles, Soaproot, Core-shell, AG ALLOY NANOPARTICLES, SILVER NANOPARTICLES, AG/PD NANOPARTICLES, MAGNETIC-PROPERTIES, GREEN SYNTHESIS, PHASE-TRANSFER, PD, SURFACE, SIZE, AU

Abstract

In this work and for the first time, bimetallic Ag-Pd nanoparticles equipped with a core-shell structure were prepared biologically by employing a galvanic displacement reaction in which the added PdCl2 reacts with an Ag nanotemplate containing an adsorbed soaproot (Acanthe phylum bracteatum) extract. Four samples with different Ag/Pd molar ratios of 100:2, 100:5, 100:10 and 100:15 were prepared to synthesize the bimetallic nanoparticles with a core-shell structure. The bimetallic Ag-Pd nanoparticles were characterized using UV-visible spectroscopy (UV-Vis), X-ray diffraction (XRD), scanning electron microscopy with an energy-dispersive X-ray spectroscopy (SEM-EDX), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR) analysis. The results from UV-Vis revealed an optimal molar ratio of 100:15 for Ag/Pd, which is appropriate to prepare bimetallic Ag-Pd nanoparticles with the core-shell structure. The results of FTIR and XRD confirmed the pure bimetallic Ag-Pd nanoparticles formation. The images prepared by TEM depicted spherical and uniformly shaped nanoparticles without any agglomeration and a particle size of 15 nm.