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An NMR Investigation Of CO Tolerance In A Pt/Ru Fuel Cell Catalyst.

Y. Tong, H. S. Kim, P. K. Babu, P. Waszczuk, A. Wiȩckowski, E. Oldfield
Published 2002 · Chemistry, Medicine

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We report the first combined application of solid-state electrochemical NMR (EC NMR), cyclic voltammetry (CV), and potentiostatic current generation to investigate the topic of the ruthenium promotion of MeOH electro-oxidation over nanoscale platinum catalysts. The CV and EC NMR results give evidence for two types of CO: CO on essentially pure Pt and CO on Pt/Ru islands. There is no NMR evidence for rapid exchange between the two CO populations. CO molecules on the primarily Pt domains behave much like CO on pure Pt, with there being little effect of Ru on the Knight shift or on Korringa relaxation. In sharp contrast, COs on Pt/Ru have highly shifted (13)C NMR resonances, much weaker Korringa relaxation, and, at higher temperatures, they undergo thermally activated surface diffusion. For CO on Pt, the correlation observed between the 2pi* Fermi level local density of states and the steady-state current suggests a role for Ru in weakening the Pt-CO bond, thereby increasing the CO oxidation rate (current). The combined EC NMR/electrochemistry approach thus provides new insights into the promotion of CO tolerance in Pt/Ru fuel cell catalysts, in addition to providing a novel route to investigating promotion in heterogeneous catalysis in general.



This paper is referenced by
10.1007/S12274-011-0140-Y
Controlled synthesis and multifunctional properties of FePt-Au heterostructures
Jiajia Wu (2011)
10.1002/9780470034590.EMRHP1084
Development of NMR: Solid‐State NMR and Materials Science, Post 1995
J. Reimer (2012)
10.1016/J.CATTOD.2009.02.031
PtRu overlayers on Au nanoparticles for methanol electro-oxidation
Kug-Seung Lee (2009)
10.1016/S0013-4686(03)00542-5
A nonelectrochemical reductive deposition of ruthenium adatoms onto nanoparticle platinum: anode catalysts for a series of direct methanol fuel cells
D. Cao (2003)
10.1149/1.2120287
Stable Pt – Ru ∕ C Catalysts Prepared from New Precursors by Thermal Reduction for Direct Methanol Fuel Cell
Z. Wang (2005)
10.1007/S11426-008-0135-Z
A mechanistic study of CO removal on a small H-saturated platinum cluster
C. Zhou (2008)
10.1002/tcr.201000010
Nuclear magnetic resonance of polymer electrolyte membrane fuel cells.
Sophia N Suarez (2010)
10.1002/chem.201503150
Small-Sized Tungsten Nitride Particles Strongly Anchored on Carbon Nanotubes and their Use as Supports for Pt for Methanol Electro-oxidation.
Yuan Liu (2015)
10.1039/c0cp00737d
Multilayered Pt/Ru nanorods with controllable bimetallic sites as methanol oxidation catalysts.
S. J. Yoo (2010)
10.1016/J.JPOWSOUR.2010.01.054
Electrocatalytic properties of carbon-supported Pt-Ru catalysts with the high alloying degree for formic acid electrooxidation
Y. Chen (2010)
10.1103/PHYSREVB.74.205418
Effect of coadsorption and Ru alloying on the adsorption of CO on Pt
B. Han (2006)
10.1039/B823053F
Highly efficient Pt―Ru―Co―W quaternary anode catalysts for methanol electrooxidation discovered by combinatorial analysis
G. S. Chai (2009)
High Temperature PEM Fuel Cells and Organic Fuels
A. Vassiliev (2014)
Transition Metal Based Nanomaterials for Hydrogen and Oxygen Involving Energy Conversion Reactions
S. Sultan (2020)
10.1039/C3CE41552J
Oxidation triggered atomic restructures enhancing the electrooxidation activities of carbon supported platinum–ruthenium catalysts
Po-Chun Huang (2014)
10.1007/s12274-015-0912-x
Small-sized tungsten nitride anchoring into a 3D CNT-rGO framework as a superior bifunctional catalyst for the methanol oxidation and oxygen reduction reactions
H. Yan (2015)
10.1021/JP805374P
Experiment and Theory of Fuel Cell Catalysis: Methanol and Formic Acid Decomposition on Nanoparticle Pt/Ru
Matthew A. Rigsby (2008)
10.1016/J.JPOWSOUR.2014.03.044
Effect of the chemical termination of conductive diamond substrate on the resistance to carbon monoxide-poisoning during methanol oxidation of platinum particles
T. Spǎtaru (2014)
10.5012/BKCS.2010.31.01.151
Study of CO Oxidation on Well-Characterized Pt-Ru/C Electrocatalysts Having Different Composition
M. Min (2010)
10.1007/978-3-662-44551-8_1
Scanning electrochemical potential microscopy (SECPM) and electrochemical STM (EC-STM)
Max Herpich (2015)
10.1039/C8TA01093E
A solvent-switched in situ confinement approach for immobilizing highly-active ultrafine palladium nanoparticles: boosting catalytic hydrogen evolution
Qi-Long Zhu (2018)
Methanol barrier layers : modified membrane electrode assemblies for the improvement of direct methanol fuel cell performance
Chatkaew Chailuecha (2016)
10.1016/J.JCAT.2012.03.001
Phase change of bimetallic PdCo electrocatalysts caused by different heat-treatment temperatures: Effect on oxygen reduction reaction activity
D. Kim (2012)
10.1002/chem.201301724
Pt3Co concave nanocubes: synthesis, formation understanding, and enhanced catalytic activity toward hydrogenation of styrene.
C. Wang (2014)
10.1016/J.JPOWSOUR.2015.01.113
Tuning of platinum nano-particles by Au usage in their binary alloy for direct ethanol fuel cell: Controlled synthesis, electrode kinetics and mechanistic interpretation
A. Dutta (2015)
10.1016/S1388-2481(02)00386-7
A nanoparticle catalyst with superior activity for electrooxidation of formic acid
P. Waszczuk (2002)
10.1016/J.APCATB.2013.11.035
PdTex/C nanocatalysts with high catalytic activity for ethanol electro-oxidation in alkaline medium
J. Cai (2014)
10.1016/J.ELECTACTA.2010.12.002
Computational fluid dynamics simulation of polymer electrolyte membrane fuel cells operating on reformate
S. M. M. Ehteshami (2011)
10.1016/J.JPOWSOUR.2008.01.011
Alcohol electrooxidation at Pt and Pt–Ru sputtered electrodes under elevated temperature and pressurized conditions
M. Umeda (2008)
10.1016/J.JELECHEM.2009.01.010
Activity of platinum–tin catalysts prepared by the Pechini–Adams method for the electrooxidation of ethanol
F.L.S. Purgato (2009)
10.1002/9783527616817.CH7
Recent Advances in in‐situ Infrared Spectroscopy and Applications in Single‐Crystal Electrochemistry and Electrocatalysis
C. Korzeniewski (2006)
10.1149/1.3183887
PtRu-Modified Au Nanoparticles as Electrocatalysts for Direct Methanol Fuel Cells
Kug-Seung Lee (2009)
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