Preparation and Characterization of Bimetallic Nanoparticles Ptx-Pd1-x Supported on Silica

Abstract:

Article Preview

Ptx-Pd(1-x) nanoparticles supported on amorphous silica (SiO2) were prepared by wetness impregnation techniques with choroplatinic acid (H2PtCl6) and palladium chloride (PdCl4) with different concentrations of Pt and Pd at about 1% in overall metallic weight. The purpose of this study was to evaluate the physical properties as physisorption (BET), X Ray Diffraction XRD, High Resolution Electron Microscopy HREM, Transmission Electron Microscopy TEM couple with XEDS energy dispersive X-ray spectrometry and chemical properties to determine the activity in cyclohexene reaction of these materials supported. Bimetallic nanoparticles are made of a single solid solution of Pt and Pd atoms, and the particles diameter of about 3-5 nm was estimated by HREM and Bright field image, the Pt-Pd nanoparticles were found mainly to have truncated cuboctahedral shape with fcc packing,. by using energy dispersive X-ray spectrometry (XEDS) and their values were found to be close to the stochiometric relative concentrations in weight of the metals in the precursor aqueous solution.

Info:

Periodical:

Advanced Materials Research (Volumes 15-17)

Edited by:

T. Chandra, K. Tsuzaki, M. Militzer and C. Ravindran

Pages:

559-563

DOI:

10.4028/www.scientific.net/AMR.15-17.559

Citation:

N. Castillo et al., "Preparation and Characterization of Bimetallic Nanoparticles Ptx-Pd1-x Supported on Silica", Advanced Materials Research, Vols. 15-17, pp. 559-563, 2007

Online since:

February 2006

Export:

Price:

$35.00

In order to see related information, you need to Login.

In order to see related information, you need to Login.