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Highly dispersed and COad-tolerant Ptshell-Pdcore catalyst for ethanol oxidation reaction: Catalytic activity and long-term durability.

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Title: Highly dispersed and COad-tolerant Ptshell-Pdcore catalyst for ethanol oxidation reaction: Catalytic activity and long-term durability.
Authors: Choi, Insoo1 ischoi@kangwon.ac.kr, Lim, Dong-Hee2, Shin, Dong Yun2
Source: International Journal of Hydrogen Energy. Jun2018, Vol. 43 Issue 24, p11335-11344. 10p.
Subjects: Platinum catalysts, Catalytic activity, Ethanol, Carbon monoxide, Durability, Electrochemical analysis
Abstract: Highly dispersed Pt shell -Pd core catalyst is synthesized via an electroless deposition and a galvanic displacement. From electrochemical analysis, the catalyst is confirmed to be active toward an ethanol oxidation reaction for a prolonged time, and is more resistive against CO ad -poisoning than a conventional Pt/C catalyst. The stable activity of Pt shell -Pd core /C is ascribed to the modified electronic property of Pt over-layer, which leads to a weak CO-adsorption strength with a high affinity for OH. The weakened binding property of surface Pt with CO ad was experimentally confirmed by conducting a CO ad -stripping and by measuring an electrochemically active surface area of the catalyst over multiple cycles. The CO ad oxidation ability of as-synthesized catalyst is further proved by a computational method via density functional theory (DFT) calculation. The result presents a potential application of the catalyst for the efficient ethanol oxidation in a direct ethanol fuel cell. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 130045675
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  Data: Highly dispersed and COad-tolerant Ptshell-Pdcore catalyst for ethanol oxidation reaction: Catalytic activity and long-term durability.
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  Data: <searchLink fieldCode="AR" term="%22Choi%2C+Insoo%22">Choi, Insoo</searchLink><relatesTo>1</relatesTo><i> ischoi@kangwon.ac.kr</i><br /><searchLink fieldCode="AR" term="%22Lim%2C+Dong-Hee%22">Lim, Dong-Hee</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Shin%2C+Dong+Yun%22">Shin, Dong Yun</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Hydrogen+Energy%22">International Journal of Hydrogen Energy</searchLink>. Jun2018, Vol. 43 Issue 24, p11335-11344. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Platinum+catalysts%22">Platinum catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Catalytic+activity%22">Catalytic activity</searchLink><br /><searchLink fieldCode="DE" term="%22Ethanol%22">Ethanol</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+monoxide%22">Carbon monoxide</searchLink><br /><searchLink fieldCode="DE" term="%22Durability%22">Durability</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochemical+analysis%22">Electrochemical analysis</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Highly dispersed Pt shell -Pd core catalyst is synthesized via an electroless deposition and a galvanic displacement. From electrochemical analysis, the catalyst is confirmed to be active toward an ethanol oxidation reaction for a prolonged time, and is more resistive against CO ad -poisoning than a conventional Pt/C catalyst. The stable activity of Pt shell -Pd core /C is ascribed to the modified electronic property of Pt over-layer, which leads to a weak CO-adsorption strength with a high affinity for OH. The weakened binding property of surface Pt with CO ad was experimentally confirmed by conducting a CO ad -stripping and by measuring an electrochemically active surface area of the catalyst over multiple cycles. The CO ad oxidation ability of as-synthesized catalyst is further proved by a computational method via density functional theory (DFT) calculation. The result presents a potential application of the catalyst for the efficient ethanol oxidation in a direct ethanol fuel cell. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.ijhydene.2018.03.022
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 10
        StartPage: 11335
    Subjects:
      – SubjectFull: Platinum catalysts
        Type: general
      – SubjectFull: Catalytic activity
        Type: general
      – SubjectFull: Ethanol
        Type: general
      – SubjectFull: Carbon monoxide
        Type: general
      – SubjectFull: Durability
        Type: general
      – SubjectFull: Electrochemical analysis
        Type: general
    Titles:
      – TitleFull: Highly dispersed and COad-tolerant Ptshell-Pdcore catalyst for ethanol oxidation reaction: Catalytic activity and long-term durability.
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            NameFull: Choi, Insoo
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            NameFull: Lim, Dong-Hee
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            NameFull: Shin, Dong Yun
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            – D: 14
              M: 06
              Text: Jun2018
              Type: published
              Y: 2018
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              Value: 43
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            – TitleFull: International Journal of Hydrogen Energy
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