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Title: Tailoring the composition of ultrathin, ternary alloy PtRuFe nanowires for the methanol oxidation reaction and formic acid oxidation reaction

Abstract

In the search for alternatives to conventional Pt electrocatalysts, we have synthesized ultrathin, ternary PtRuFe nanowires (NW), possessing different chemical compositions in order to probe their CO tolerance as well as electrochemical activity as a function of composition for both (i) the methanol oxidation reaction (MOR) and (ii) the formic acid oxidation reaction (FAOR). As-prepared ‘multifunctional’ ternary NW catalysts exhibited both higher MOR and FAOR activity as compared with binary Pt₇Ru₃ NW, monometallic Pt NW, and commercial catalyst control samples. In terms of synthetic novelty, we utilized a sustainably mild, ambient wet-synthesis method never previously applied to the fabrication of crystalline, pure ternary systems in order to fabricate ultrathin, homogeneous alloy PtRuFe NWs with a range of controlled compositions. Thus, these NWs were subsequently characterized using a suite of techniques including XRD, TEM, SAED, and EDAX in order to verify not only the incorporation of Ru and Fe into the Pt lattice but also their chemical homogeneity, morphology, as well as physical structure and integrity. Lastly, these NWs were electrochemically tested in order to deduce the appropriateness of conventional explanations such as (i) the bi-functional mechanism as well as (ii) the ligand effect to account for our MOR and FAORmore » reaction data. Specifically, methanol oxidation appears to be predominantly influenced by the Ru content, whereas formic acid oxidation is primarily impacted by the corresponding Fe content within the ternary metal alloy catalyst itself.« less

Authors:
 [1];  [1];  [1];  [1];  [2]
+ Show Author Affiliations
  1. State Univ. of New York at Stony Brook, Stony Brook, NY (United States)
  2. State Univ. of New York at Stony Brook, Stony Brook, NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1182473
Report Number(s):
BNL-107165-2014-JA
Journal ID: ISSN 1754-5692; EESNBY; R&D Project: PM037; KC0201030
Grant/Contract Number:  
SC00112704
Resource Type:
Accepted Manuscript
Journal Name:
Energy & Environmental Science
Additional Journal Information:
Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 1754-5692
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Scofield, Megan E., Koenigsmann, Christopher, Wang, Lei, Liu, Haiqing, and Wong, Stanislaus S. Tailoring the composition of ultrathin, ternary alloy PtRuFe nanowires for the methanol oxidation reaction and formic acid oxidation reaction. United States: N. p., 2014. Web. doi:10.1039/c4ee02162b.
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Scofield, Megan E., Koenigsmann, Christopher, Wang, Lei, Liu, Haiqing, & Wong, Stanislaus S. Tailoring the composition of ultrathin, ternary alloy PtRuFe nanowires for the methanol oxidation reaction and formic acid oxidation reaction. United States. https://doi.org/10.1039/c4ee02162b
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Scofield, Megan E., Koenigsmann, Christopher, Wang, Lei, Liu, Haiqing, and Wong, Stanislaus S. Tue . "Tailoring the composition of ultrathin, ternary alloy PtRuFe nanowires for the methanol oxidation reaction and formic acid oxidation reaction". United States. https://doi.org/10.1039/c4ee02162b. https://www.osti.gov/servlets/purl/1182473.
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@article{osti_1182473,
title = {Tailoring the composition of ultrathin, ternary alloy PtRuFe nanowires for the methanol oxidation reaction and formic acid oxidation reaction},
author = {Scofield, Megan E. and Koenigsmann, Christopher and Wang, Lei and Liu, Haiqing and Wong, Stanislaus S.},
abstractNote = {In the search for alternatives to conventional Pt electrocatalysts, we have synthesized ultrathin, ternary PtRuFe nanowires (NW), possessing different chemical compositions in order to probe their CO tolerance as well as electrochemical activity as a function of composition for both (i) the methanol oxidation reaction (MOR) and (ii) the formic acid oxidation reaction (FAOR). As-prepared ‘multifunctional’ ternary NW catalysts exhibited both higher MOR and FAOR activity as compared with binary Pt₇Ru₃ NW, monometallic Pt NW, and commercial catalyst control samples. In terms of synthetic novelty, we utilized a sustainably mild, ambient wet-synthesis method never previously applied to the fabrication of crystalline, pure ternary systems in order to fabricate ultrathin, homogeneous alloy PtRuFe NWs with a range of controlled compositions. Thus, these NWs were subsequently characterized using a suite of techniques including XRD, TEM, SAED, and EDAX in order to verify not only the incorporation of Ru and Fe into the Pt lattice but also their chemical homogeneity, morphology, as well as physical structure and integrity. Lastly, these NWs were electrochemically tested in order to deduce the appropriateness of conventional explanations such as (i) the bi-functional mechanism as well as (ii) the ligand effect to account for our MOR and FAOR reaction data. Specifically, methanol oxidation appears to be predominantly influenced by the Ru content, whereas formic acid oxidation is primarily impacted by the corresponding Fe content within the ternary metal alloy catalyst itself.},
doi = {10.1039/c4ee02162b},
journal = {Energy & Environmental Science},
number = 1,
volume = 8,
place = {United States},
year = {Tue Nov 25 00:00:00 EST 2014},
month = {Tue Nov 25 00:00:00 EST 2014}
}
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    • Chemical Communications, Vol. 55, Issue 75
    • DOI: 10.1039/c9cc06004a

    Pt and RhPt dendritic nanowires and their potential application as anodic catalysts for fuel cells
    journal, January 2019

    • Kehoe, Daniel K.; McCarthy, Sarah A.; Romeral, Luis
    • RSC Advances, Vol. 9, Issue 53
    • DOI: 10.1039/c9ra04801d

    Biaxially strained PtPb/Pt core/shell nanoplate boosts oxygen reduction catalysis
    journal, December 2016

    Synergistic Supports Beyond Carbon Black for Polymer Electrolyte Fuel Cell Anodes
    journal, September 2018

    Ultrathin Metallic Nanowire-Based Architectures as High-Performing Electrocatalysts
    journal, March 2018

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