Platinum-Decorated Ruthenium Nanoparticles for Enhanced Methanol Electrooxidation

Ching Hsiang Chen; Loka Subramanyam Sarma; Di Yan Wang; Feng Ju Lai; Cun Cun Al Andra; Shi Hong Chang; Din Goa Liu; Chia Chun Chen; Jyh Fu Lee; Bing Joe Hwang

doi:10.1002/cctc.200900051

Platinum-Decorated Ruthenium Nanoparticles for Enhanced Methanol Electrooxidation

Ching Hsiang Chen
, Loka Subramanyam Sarma
, Di Yan Wang
, Feng Ju Lai
, Cun Cun Al Andra
, Shi Hong Chang
, Din Goa Liu
, Chia Chun Chen
, Jyh Fu Lee
, Bing Joe Hwang^*

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

A promising electrocatalyst based on the reduction of Pt²⁺ ions on the surface of hexagonally close-packed (hcp) Ru core nanoparticles has been prepared by a redox-transmetalation process. This simple synthetic process generates a Pt-on-Ru catalyst with a lower Pt content than commercially available Pt-Ru electrocatalysts and with a long-range ordered hcp structure, which can significantly reduce the Pt loading. X-Ray absorption spectroscopy of the Pt-on-Ru catalyst reveals pronounced electronic modifications when compared to the commercial Pt-Ru black catalyst. The Pt-on-Ru catalyst exhibits a higher mass-specific current than the Pt-Ru black catalyst in solution in 0.5M H₂SO₄ with 10 vol.% CH₃OH under the conditions of rotating disk experiments. Further optimization of this synthetic procedure may yield even more active electrocatalysts with a significant reduction in noble metal loadings.

Original language	English
Pages (from-to)	159-166
Number of pages	8
Journal	ChemCatChem
Volume	2
Issue number	2
DOIs	https://doi.org/10.1002/cctc.200900051
Publication status	Published - 2010 Feb 8

Keywords

Electrocatalysis
Electrochemistry
Fuel cells
Nanoparticles
X-ray absorption spectroscopy

ASJC Scopus subject areas

Catalysis
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

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10.1002/cctc.200900051

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title = "Platinum-Decorated Ruthenium Nanoparticles for Enhanced Methanol Electrooxidation",

abstract = "A promising electrocatalyst based on the reduction of Pt2+ ions on the surface of hexagonally close-packed (hcp) Ru core nanoparticles has been prepared by a redox-transmetalation process. This simple synthetic process generates a Pt-on-Ru catalyst with a lower Pt content than commercially available Pt-Ru electrocatalysts and with a long-range ordered hcp structure, which can significantly reduce the Pt loading. X-Ray absorption spectroscopy of the Pt-on-Ru catalyst reveals pronounced electronic modifications when compared to the commercial Pt-Ru black catalyst. The Pt-on-Ru catalyst exhibits a higher mass-specific current than the Pt-Ru black catalyst in solution in 0.5M H2SO4 with 10 vol.\% CH3OH under the conditions of rotating disk experiments. Further optimization of this synthetic procedure may yield even more active electrocatalysts with a significant reduction in noble metal loadings.",

keywords = "Electrocatalysis, Electrochemistry, Fuel cells, Nanoparticles, X-ray absorption spectroscopy",

author = "Chen, \{Ching Hsiang\} and Sarma, \{Loka Subramanyam\} and Wang, \{Di Yan\} and Lai, \{Feng Ju\} and \{Al Andra\}, \{Cun Cun\} and Chang, \{Shi Hong\} and Liu, \{Din Goa\} and Chen, \{Chia Chun\} and Lee, \{Jyh Fu\} and Hwang, \{Bing Joe\}",

year = "2010",

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AU - Chen, Ching Hsiang

AU - Sarma, Loka Subramanyam

AU - Wang, Di Yan

AU - Lai, Feng Ju

AU - Al Andra, Cun Cun

AU - Chang, Shi Hong

AU - Liu, Din Goa

AU - Chen, Chia Chun

AU - Lee, Jyh Fu

AU - Hwang, Bing Joe

PY - 2010/2/8

Y1 - 2010/2/8

N2 - A promising electrocatalyst based on the reduction of Pt2+ ions on the surface of hexagonally close-packed (hcp) Ru core nanoparticles has been prepared by a redox-transmetalation process. This simple synthetic process generates a Pt-on-Ru catalyst with a lower Pt content than commercially available Pt-Ru electrocatalysts and with a long-range ordered hcp structure, which can significantly reduce the Pt loading. X-Ray absorption spectroscopy of the Pt-on-Ru catalyst reveals pronounced electronic modifications when compared to the commercial Pt-Ru black catalyst. The Pt-on-Ru catalyst exhibits a higher mass-specific current than the Pt-Ru black catalyst in solution in 0.5M H2SO4 with 10 vol.% CH3OH under the conditions of rotating disk experiments. Further optimization of this synthetic procedure may yield even more active electrocatalysts with a significant reduction in noble metal loadings.

AB - A promising electrocatalyst based on the reduction of Pt2+ ions on the surface of hexagonally close-packed (hcp) Ru core nanoparticles has been prepared by a redox-transmetalation process. This simple synthetic process generates a Pt-on-Ru catalyst with a lower Pt content than commercially available Pt-Ru electrocatalysts and with a long-range ordered hcp structure, which can significantly reduce the Pt loading. X-Ray absorption spectroscopy of the Pt-on-Ru catalyst reveals pronounced electronic modifications when compared to the commercial Pt-Ru black catalyst. The Pt-on-Ru catalyst exhibits a higher mass-specific current than the Pt-Ru black catalyst in solution in 0.5M H2SO4 with 10 vol.% CH3OH under the conditions of rotating disk experiments. Further optimization of this synthetic procedure may yield even more active electrocatalysts with a significant reduction in noble metal loadings.

KW - Electrocatalysis

KW - Electrochemistry

KW - Fuel cells

KW - Nanoparticles

KW - X-ray absorption spectroscopy

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JO - ChemCatChem

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Platinum-Decorated Ruthenium Nanoparticles for Enhanced Methanol Electrooxidation

Abstract

Keywords

ASJC Scopus subject areas

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