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Dispersion of SiW12 Nanoparticles on Highly Oxidized Multiwalled Carbon Nanotubes and their Electrocatalytic Behavior

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Abstract:

Nanocomposite hybrid materials (NHM) based on the immobilization and dispersion of SiW12 polyanion (H4SiW12O40) on a highly oxidized multiwalled carbon nanobue matrix (NTS) are presented. The synthesis procedure followed is designed in order to increase the SiW12 particles concentration on the NHM. XRD, FTIR, N2 adsorption isotherms, EDS, SEM, TEM, and cyclic voltammetry confirmed the presence of SiW12 nanoparticles, whose microstructure and dispersion characteristics were correlated with their BET surface area and their electrochemical behavior. Based on these studies, SiW12 nanoparticles are successfully nanodispersed in the highly oxidized carbon nanotube matrix (NTS), obtaining the highest SiW12 concentration and best electrochemical behavior for sample MH3. The electrocatalytic properties are evaluated for this optimized hybrid (MH3) in the electroreduction of bromated ion with good results.

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Journal of Nano Research Vol. 14 View Preview

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Periodical:

Journal of Nano Research (Volume 14)

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11-18

DOI:

https://doi.org/10.4028/www.scientific.net/JNanoR.14.11

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Online since:

April 2011

Authors:

Ana Karina Cuentas-Gallegos, Abraham Zamudio-Flores, Montse Casas-Cabanas

Keywords:

Carbon Nanotube (CN), Hybrid Material, Keggin, Nanocomposite, Polyoxometalate, SiW12

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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