Title : ( Mechanistic insights into the activation process in electrocatalytic ethanol oxidation by phosphomolybdic acid-stabilised palladium(0) nanoparticles (PdNPs@PMo12) )
Authors: Sara Khadempir , Ali Ahmadpour , Mohammad Taghi Hamed Mosavian , Narjes Ashraf , Fatemeh F. Bamoharram , Jes´us M. de la Fuente , Scott G. Mitchell ,
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Abstract
A Keggin type polyoxometalate (POM), phosphomolybdic acid (PMo12), has been employed to encapsulate and stabilise pseudo-spherical Pd(0) nanoparticles (PdNPs). The resulting nanohybrid phosphomolybdic acid-stabilised PdNPs (PdNPs@PMo12) were characterised by transmission electron microscopy (TEM), high-angle annular dark field-scanning transmission electron microscopy (HAADF-STEM), energydispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR) and powder X-ray diffraction (XRD). The PdNPs@PMo12 were used as an electrocatalyst for ethanol oxidation in alkaline media and the best electrocatalytic activity was assessed by applying an activation process. The electrochemical data (chronoamperometry, cyclic voltammetry and linear sweep voltammetry) allowed us to attribute the superior performance of the nanohybrid to the generation of Pd–OHads sites at the surface of the PdNPs@PMo12, reinforced by the formation of a new molybdenum species on the surface of the electrocatalyst.
Keywords
, Keggin, Ethanol oxidation, Activation process, Pd NPs.
@article{paperid:1054363,
author = {Khadempir, Sara and Ahmadpour, Ali and Hamed Mosavian, Mohammad Taghi and Ashraf, Narjes and Fatemeh F. Bamoharram and Jes´us M. De La Fuente and Scott G. Mitchell},
title = {Mechanistic insights into the activation process in electrocatalytic ethanol oxidation by phosphomolybdic acid-stabilised palladium(0) nanoparticles (PdNPs@PMo12)},
journal = {RSC Advances},
year = {2016},
volume = {6},
number = {1},
month = {January},
issn = {2046-2069},
pages = {5359--5366},
numpages = {7},
keywords = {Keggin; Ethanol oxidation; Activation process; Pd NPs.},
}
%0 Journal Article
%T Mechanistic insights into the activation process in electrocatalytic ethanol oxidation by phosphomolybdic acid-stabilised palladium(0) nanoparticles (PdNPs@PMo12)
%A Khadempir, Sara
%A Ahmadpour, Ali
%A Hamed Mosavian, Mohammad Taghi
%A Ashraf, Narjes
%A Fatemeh F. Bamoharram
%A Jes´us M. De La Fuente
%A Scott G. Mitchell
%J RSC Advances
%@ 2046-2069
%D 2016
