Title of article :
Synthesis and characterization of the Pt/SiO2 nanocomposite by the sol-gel method
Author/Authors :
Salabat, A Department of Chemistry, Arak University , Barati, A Department of Chemical Engineering, Arak University , Banijamali, N Department of Chemical Engineering, Arak University
Abstract :
The silica supported platinum nanoparticles was synthesized by
using the sol-gel method. The possibility of using diamminedinitro
platinum(II) as Pt precursor and effect of metal precursor
concentration on the final Pt nanoparticle size was investigated. A
stable silica sol was prepared via hydrolysis of tetraethyl orthosilicate
(TEOS) as a metal alchoxide and condensation reaction.
Subsequently, diamminedinitro platinum (II) was added to sol to
form the Pt/silica sol. After drying and calcination of the sol, the
Pt/SiO2 nanocpmposite has been obtained. Crystallographic
information and crystalline size of the synthesized Pt/SiO2 were
determined by X-ray diffraction (XRD) method. Morphology of the
nanoparticles and hydrogen-bonding interaction between silanol
groups and amine ligands were characterized by SEM and Fourier
transform infrared (FTIR) spectra, respectively. Transmission
Electron Microscopy (TEM) was employed in evaluating the
distribution and size of the platinum nanoparticles in the silica.
Keywords :
Nanoparticles , Sol-gel method , Silica supported platinum , Platinum nanoparticles
Journal title :
Astroparticle Physics
