The effect of the surface composition of Ru-Pt bimetallic catalysts for methanol oxidation

Garrick, Taylor R.; Diao, Weijian; Tengco, John M.; Stach, Eric A.; Senanayake, Sanjaya D.; Chen, Donna A.; Monnier, John R.; Weidner, John W.

doi:10.1016/j.electacta.2016.02.134

Title: The effect of the surface composition of Ru-Pt bimetallic catalysts for methanol oxidation

Journal Article · Tue Feb 23 00:00:00 EST 2016 · Electrochimica Acta

DOI:https://doi.org/10.1016/j.electacta.2016.02.134· OSTI ID:1326766

Garrick, Taylor R. ^[1]; Diao, Weijian ^[1]; Tengco, John M. ^[1]; Stach, Eric A. ^[2]; Senanayake, Sanjaya D. ^[2]; Chen, Donna A. ^[1]; Monnier, John R. ^[1]; Weidner, John W. ^[1]

Univ. of South Carolina, Columbia, SC (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)

Here, a series of Ru-Pt bimetallic catalysts prepared by the electroless deposition of controlled and variable amounts of Ru on the Pt surface of a commercially-available 20 wt% Pt/C catalyst has been characterized and evaluated for the oxidation of methanol. The activity of each Ru-Pt catalyst was determined as a function of surface composition via cyclic voltammetry. For the Ru-Pt bimetallic catalysts, activity passed through a maximum at approximately 50% monodisperse Ru surface coverage. However, due to the monolayer coverage of Ru on Pt, the amount of metal in the catalyst is minimized compared to a bulk 1:1 atomic ratio of Ru:Pt seen in commercial bimetallic catalysts. Chemisorption and temperature programmed reduction experiments confirmed that the surface had characteristics of a true bimetallic catalyst. On a mass of Pt basis, the activity of this composition for methanol oxidation was 7 times higher than pure Pt and 3.5 times higher than a commercial catalyst with a 1:1 Pt:Ru bulk atomic ratio.

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Research Organization:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC00112704

OSTI ID:: 1326766

Alternate ID(s):: OSTI ID: 1359039

Report Number(s):: BNL-112680-2016-JA; R&D Project: CO009; KC0302010

Journal Information:: Electrochimica Acta, Vol. 195, Issue C; ISSN 0013-4686

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 35 works

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Electroless Synthesis of Highly Stable and Free-Standing Porous Pt Nanotube Networks and their Application in Methanol Oxidation Walbert, Torsten; Antoni, Markus; Muench, Falk ChemElectroChem, Vol. 5, Issue 7 https://doi.org/10.1002/celc.201701271	journal	February 2018
High performance Pt/Ti 3 O 5 Mo 0.2 Si 0.4 electrocatalyst with outstanding methanol oxidation activity Alipour Moghadam Esfahani, Reza; Moghaddam, Reza B.; Easton, E. Bradley Catalysis Science & Technology, Vol. 9, Issue 15 https://doi.org/10.1039/c9cy00704k	journal	January 2019
A catalyst coated electrode for electrochemical formaldehyde oxidation Spasojevic, Milica; Spasojevic, Miroslav; Ribic-Zelenovic, Lenka Monatshefte für Chemie - Chemical Monthly, Vol. 151, Issue 1 https://doi.org/10.1007/s00706-019-02533-0	journal	January 2020
Oxygen Reduction Reaction and Hydrogen Evolution Reaction Catalyzed by Pd–Ru Nanoparticles Encapsulated in Porous Carbon Nanosheets Tian, Juntai; Wu, Wen; Tang, Zhenghua Catalysts, Vol. 8, Issue 8 https://doi.org/10.3390/catal8080329	journal	August 2018
Electroless Nanoplating of Pd−Pt Alloy Nanotube Networks: Catalysts with Full Compositional Control for the Methanol Oxidation Reaction Stohr, Tobias; Fischer, Angelina; Muench, Falk ChemElectroChem, Vol. 7, Issue 3 https://doi.org/10.1002/celc.201901939	journal	February 2020
Electroless Nanoplating of Pd−Pt Alloy Nanotube Networks: Catalysts with Full Compositional Control for the Methanol Oxidation Reaction Stohr, Tobias; Fischer, Angelina; Muench, Falk Wiley-VCH GmbH https://doi.org/10.26083/tuprints-00015641	text	January 2022

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
electrochemical
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Title: The effect of the surface composition of Ru-Pt bimetallic catalysts for methanol oxidation

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