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Title: Platinum-ruthenium nanotubes and platinum-ruthenium coated copper nanowires as efficient catalysts for electro-oxidation of methanol

Abstract

The sluggish kinetics of methanol oxidation reaction (MOR) is a major barrier to the commercialization of direct methanol fuel cells (DMFCs). In this study, we report a facile synthesis of platinum–ruthenium nanotubes (PtRuNTs) and platinum–ruthenium-coated copper nanowires (PtRu/CuNWs) by galvanic displacement reaction using copper nanowires as a template. The PtRu compositional effect on MOR is investigated; the optimum Pt/Ru bulk atomic ratio is about 4 and surface atomic ratio about 1 for both PtRuNTs and PtRu/CuNWs. Enhanced specific MOR activities are observed on both PtRuNTs and PtRu/CuNWs compared with the benchmark commercial carbon-supported PtRu catalyst (PtRu/C, Hispec 12100). Finally, x-ray photoelectron spectroscopy (XPS) reveals a larger extent of electron transfer from Ru to Pt on PtRu/CuNWs, which may lead to a modification of the d-band center of Pt and consequently a weaker bonding of CO (the poisoning intermediate) on Pt and a higher MOR activity on PtRu/CuNWs.

Authors:
 [1];  [2];  [1];  [1];  [1];  [3];  [4];  [1]
  1. Univ. of Delaware, Newark, DE (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Univ. of Delaware, Newark, DE (United States) ; Columbia Univ., New York, NY (United States)
  4. Columbia Univ., New York, NY (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1265286
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ACS Catalysis
Additional Journal Information:
Journal Volume: 5; Journal Issue: 3; Journal ID: ISSN 2155-5435
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 30 DIRECT ENERGY CONVERSION; electrocatalysis; methanol fuel cells; methanol oxidation reaction; one-dimensional structure; platinum−ruthenium

Citation Formats

Zheng, Jie, Cullen, David A., Forest, Robert V., Wittkopf, Jarrid A., Zhuang, Zhongbin, Zheng, Whenchao, Chen, Jingguang G., and Yan, Yushan. Platinum-ruthenium nanotubes and platinum-ruthenium coated copper nanowires as efficient catalysts for electro-oxidation of methanol. United States: N. p., 2015. Web. doi:10.1021/cs501449y.
Zheng, Jie, Cullen, David A., Forest, Robert V., Wittkopf, Jarrid A., Zhuang, Zhongbin, Zheng, Whenchao, Chen, Jingguang G., & Yan, Yushan. Platinum-ruthenium nanotubes and platinum-ruthenium coated copper nanowires as efficient catalysts for electro-oxidation of methanol. United States. https://doi.org/10.1021/cs501449y
Zheng, Jie, Cullen, David A., Forest, Robert V., Wittkopf, Jarrid A., Zhuang, Zhongbin, Zheng, Whenchao, Chen, Jingguang G., and Yan, Yushan. 2015. "Platinum-ruthenium nanotubes and platinum-ruthenium coated copper nanowires as efficient catalysts for electro-oxidation of methanol". United States. https://doi.org/10.1021/cs501449y. https://www.osti.gov/servlets/purl/1265286.
@article{osti_1265286,
title = {Platinum-ruthenium nanotubes and platinum-ruthenium coated copper nanowires as efficient catalysts for electro-oxidation of methanol},
author = {Zheng, Jie and Cullen, David A. and Forest, Robert V. and Wittkopf, Jarrid A. and Zhuang, Zhongbin and Zheng, Whenchao and Chen, Jingguang G. and Yan, Yushan},
abstractNote = {The sluggish kinetics of methanol oxidation reaction (MOR) is a major barrier to the commercialization of direct methanol fuel cells (DMFCs). In this study, we report a facile synthesis of platinum–ruthenium nanotubes (PtRuNTs) and platinum–ruthenium-coated copper nanowires (PtRu/CuNWs) by galvanic displacement reaction using copper nanowires as a template. The PtRu compositional effect on MOR is investigated; the optimum Pt/Ru bulk atomic ratio is about 4 and surface atomic ratio about 1 for both PtRuNTs and PtRu/CuNWs. Enhanced specific MOR activities are observed on both PtRuNTs and PtRu/CuNWs compared with the benchmark commercial carbon-supported PtRu catalyst (PtRu/C, Hispec 12100). Finally, x-ray photoelectron spectroscopy (XPS) reveals a larger extent of electron transfer from Ru to Pt on PtRu/CuNWs, which may lead to a modification of the d-band center of Pt and consequently a weaker bonding of CO (the poisoning intermediate) on Pt and a higher MOR activity on PtRu/CuNWs.},
doi = {10.1021/cs501449y},
url = {https://www.osti.gov/biblio/1265286}, journal = {ACS Catalysis},
issn = {2155-5435},
number = 3,
volume = 5,
place = {United States},
year = {Thu Jan 15 00:00:00 EST 2015},
month = {Thu Jan 15 00:00:00 EST 2015}
}

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Cited by: 131 works
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Works referencing / citing this record:

Tuning Nanowires and Nanotubes for Efficient Fuel-Cell Electrocatalysis
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Tailoring the Surface Structures of CuPt and CuPtRu 1D Nanostructures by Coupling Coreduction with Galvanic Replacement
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Synergistic effects of platinum–cerium carbonate hydroxides–reduced graphene oxide on enhanced durability for methanol electro-oxidation
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Ultralong Ternary PtRuTe Mesoporous Nanotubes Fabricated by Micelle Assembly with a Self‐Sacrificial Template
journal, March 2019


Ultrafine PtRu Dilute Alloy Nanodendrites for Enhanced Electrocatalytic Methanol Oxidation
journal, October 2019


TePbPt alloy nanotube as electrocatalyst with enhanced performance towards methanol oxidation reaction
journal, January 2018


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


Ternary PtRuCu aerogels for enhanced methanol electrooxidation
journal, January 2019


Tuning Ion Complexing To Rapidly Prepare Hollow Ag-Pt Nanowires with High Activity toward the Methanol Oxidization Reaction
journal, October 2018


Metal Nanotube/Nanowire-Based Unsupported Network Electrocatalysts
journal, December 2018


Nanowire Genome: A Magic Toolbox for 1D Nanostructures
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Engineering one-dimensional and hierarchical PtFe alloy assemblies towards durable methanol electrooxidation
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The adsorption of alcohols on strained Pt 3 Ni(111) substrates: a density functional investigation within the D3 van der Waals correction
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Bio-inspired Construction of Advanced Fuel Cell Cathode with Pt Anchored in Ordered Hybrid Polymer Matrix
journal, November 2015