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Synthesis of polyol based Ag/Pd nanocomposites for applications in catalysis

Adekoya, J. A. and Dare, E.O and Mesubi, M. A. and Nejo, Adeola A. and Swart, H. C. and Revaprasadu, Neerish (2014) Synthesis of polyol based Ag/Pd nanocomposites for applications in catalysis. Results in Physics, 4. pp. 12-19.

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Abstract

The synthesis of polyvinylpyrrolidone seed mediated Ag/Pd allied nanobimetallic particles was successfully carried out by the simultaneous reduction of the metal ions in ethylene glycol, diethylene glycol, glycerol, pentaerythritol and sodium borohydride solution. The optical measurement revealed the existence of peak broadening that causes diffusion processes of the metal sols to decrease making it possible to monitor the changes spectrophotometrically. This, together with X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and high resolution TEM measurements strongly support the conclusion that intimately alloyed clusters were formed and the particle growth anisotropy is diffusion limited. Finally, the catalytic potential of the nanocomposites was investigated using 4-nitrophenol in the presence of sodium borohydride at 299 K; a good linear fitting of ln (A/A0) versus the reaction time was obtained, indicating pseudo-first-order kinetics

Item Type: Article
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User: Dr Joseph Adeyemi Adekoya
Date Deposited: 09 Apr 2015 11:09
Last Modified: 09 Oct 2015 11:37
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/4732

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