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Sonochemical synthesis of Pt-deposited SiO2 nanocomposite and its catalytic application for polymer electrolyte membrane fuel cell under low-humidity conditions

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Title: Sonochemical synthesis of Pt-deposited SiO2 nanocomposite and its catalytic application for polymer electrolyte membrane fuel cell under low-humidity conditions
Authors: Choi, Insoo1, Lee, Kyoung G.2,3, Ahn, Sang Hyun1, Kim, Do Hyun3, Kwon, Oh Joong4, Kim, Jae Jeong1 jjkimm@snu.ac.kr
Source: Catalysis Communications. May2012, Vol. 21, p86-90. 5p.
Subjects: Synthesis of Nanocomposite materials, Sonochemistry, Silica, Platinum catalysts, Proton exchange membrane fuel cells, Humidity, Metal nanoparticles, Surface chemistry
Abstract: Abstract: The direct deposition of platinum (Pt) nanoparticles on the surface of SiO2 without surface modification was attempted by irradiating ultrasound. This method enabled the formation of Pt nanoparticles with a narrow-sized distribution. The nanocomposites were blended with conducting carbon and applied as an anode catalyst for polymer electrolyte membrane fuel cell. With various anode relative humidity, the membrane fabricated with the catalyst exhibited tolerance toward water-deficient condition showing sustainable performance, while the membrane with commercial catalyst degraded sharply. This was attributed to the SiO2''s water-uptake ability, which retained the hydration level in the membrane under low humidity. [Copyright &y& Elsevier]
Copyright of Catalysis Communications is the property of Elsevier B.V. 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.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 73569693
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
  Group: Ti
  Data: Sonochemical synthesis of Pt-deposited SiO<subscript>2</subscript> nanocomposite and its catalytic application for polymer electrolyte membrane fuel cell under low-humidity conditions
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  Data: <searchLink fieldCode="AR" term="%22Choi%2C+Insoo%22">Choi, Insoo</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lee%2C+Kyoung+G%2E%22">Lee, Kyoung G.</searchLink><relatesTo>2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Ahn%2C+Sang+Hyun%22">Ahn, Sang Hyun</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kim%2C+Do+Hyun%22">Kim, Do Hyun</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Kwon%2C+Oh+Joong%22">Kwon, Oh Joong</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Kim%2C+Jae+Jeong%22">Kim, Jae Jeong</searchLink><relatesTo>1</relatesTo><i> jjkimm@snu.ac.kr</i>
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  Data: <searchLink fieldCode="JN" term="%22Catalysis+Communications%22">Catalysis Communications</searchLink>. May2012, Vol. 21, p86-90. 5p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Synthesis+of+Nanocomposite+materials%22">Synthesis of Nanocomposite materials</searchLink><br /><searchLink fieldCode="DE" term="%22Sonochemistry%22">Sonochemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Silica%22">Silica</searchLink><br /><searchLink fieldCode="DE" term="%22Platinum+catalysts%22">Platinum catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Proton+exchange+membrane+fuel+cells%22">Proton exchange membrane fuel cells</searchLink><br /><searchLink fieldCode="DE" term="%22Humidity%22">Humidity</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+nanoparticles%22">Metal nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+chemistry%22">Surface chemistry</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Abstract: The direct deposition of platinum (Pt) nanoparticles on the surface of SiO2 without surface modification was attempted by irradiating ultrasound. This method enabled the formation of Pt nanoparticles with a narrow-sized distribution. The nanocomposites were blended with conducting carbon and applied as an anode catalyst for polymer electrolyte membrane fuel cell. With various anode relative humidity, the membrane fabricated with the catalyst exhibited tolerance toward water-deficient condition showing sustainable performance, while the membrane with commercial catalyst degraded sharply. This was attributed to the SiO2''s water-uptake ability, which retained the hydration level in the membrane under low humidity. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Catalysis Communications is the property of Elsevier B.V. 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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      – Type: doi
        Value: 10.1016/j.catcom.2012.02.005
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      – Code: eng
        Text: English
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        PageCount: 5
        StartPage: 86
    Subjects:
      – SubjectFull: Synthesis of Nanocomposite materials
        Type: general
      – SubjectFull: Sonochemistry
        Type: general
      – SubjectFull: Silica
        Type: general
      – SubjectFull: Platinum catalysts
        Type: general
      – SubjectFull: Proton exchange membrane fuel cells
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      – SubjectFull: Humidity
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      – SubjectFull: Metal nanoparticles
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      – SubjectFull: Surface chemistry
        Type: general
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      – TitleFull: Sonochemical synthesis of Pt-deposited SiO2 nanocomposite and its catalytic application for polymer electrolyte membrane fuel cell under low-humidity conditions
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            NameFull: Choi, Insoo
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            NameFull: Ahn, Sang Hyun
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            NameFull: Kim, Do Hyun
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            NameFull: Kwon, Oh Joong
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              Text: May2012
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              Y: 2012
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