Wells, P. P.; Crabb, E. M.; King, C. R.; Wiltshire, R.; Bilsborrow, B.; Thompsett, D. and Russell, A. E.
|DOI (Digital Object Identifier) Link:||http://dx.doi.org/10.1039/b823504j|
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A controlled surface reaction technique has been successfully employed to prepare a series of Pt modified Pd/C (Pt/Pd/C) and Pd modified Pt/C (Pd/Pt/C) catalysts. The resulting catalyst materials were characterised by TEM, XRD, electrochemistry, and EXAFS techniques. In the case of the Pd/Pt/C carbon catalysts, core-shell structural arrangements were found, with a 0.04 angstrom contraction of the Pd-Pd bond distance for the 1 Pd/Pt/C being observed. A greater degree of alloying was found for the Pt/Pd/C catalysts where the surface had a mixed composition with a large proportion of the Pt in the interior of the nanoparticle. However, strong Pt characteristics were exhibited in the voltammetry of Pt/Pd/C catalysts, most notably a large increase in the stability with respect to the electrochemical environment compared to Pd alone.
|Item Type:||Journal Article|
|Copyright Holders:||2009 Royal Society of Chemistry|
|Project Funding Details:||
|Keywords:||surface organometallic chemistry; palladium alloy electrocatalysts; oxygen reduction reaction; o-2 reduction; catalysts; pt(111); metals; nanoparticles; deposition; oxidation|
|Academic Unit/Department:||Science > Life, Health and Chemical Sciences
|Interdisciplinary Research Centre:||Biomedical Research Network (BRN)
Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
|Depositing User:||Eleanor Crabb|
|Date Deposited:||21 Sep 2009 12:56|
|Last Modified:||15 Jan 2016 11:42|
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