Fabrication of Bifunctional SiO₂/Europium-Polyoxometalates/Ag Particles and their Luminescence and Catalysis Properties

Abstract:

In this paper, Stöber silica particles were decorated with polyethyleneimine and silver nanoparticles and Eu-polyoxometalates were grafted on the surface of polyethyleneimine/silica spheres. The hybrid SiO₂/Eu-polyoxometalates/Ag particles were characterized by IR, UVvis, luminescent spectra, scanning electron microscopy, transmission electron microscope, and cyclic voltammetry (CV), respectively. The hybrid particles show the bright red emission under UV light which can be observed by naked eyes. The luminescent properties of particles have been investigated which show that Ag nanoparticles have an influences on the luminescence of europium ions. The electrochemical activities of SiO₂/Eu-polyoxometalates/Ag particles have been demonstrated by CV measurement. The catalytic results indicate that the hybrid particles show the catalytic properties in the oxidation of styrene and benzaldehyde is the main product of the reaction.

• Periodical: Key Engineering Materials (Volumes 575-576)
• Pages: 216-224
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.575-576.216
• Online since: September 2013
• Authors: Jun Wang, Shao Hua Fan, Wei Qian Zhao, Wu Ke Li, Xue Lian Lu
• Keywords: Ag, Catalysis, Luminescence, Nanoparticle, Silica

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