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Cooperative effect of Pt single-atoms and nanoparticles supported on carbonaceous materials: Catalytic NO decomposition as a probe reaction.

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Title: Cooperative effect of Pt single-atoms and nanoparticles supported on carbonaceous materials: Catalytic NO decomposition as a probe reaction.
Authors: Granger, Pascal1 (AUTHOR) pascal.granger@univ-lille.fr, Wu, Jianxiong1 (AUTHOR), Ba, Housseinou2 (AUTHOR), Baaziz, Walid3 (AUTHOR), Ersen, Ovidiu3 (AUTHOR), Zafeiratos, Spyridon2 (AUTHOR), Nhut, Jean-Mario2 (AUTHOR), Giambastiani, Giuliano1,2,4 (AUTHOR) giambastiani@unistra.fr, Pham-Huu, Cuong1,2 (AUTHOR) cuong.pham-huu@unista.fr
Source: Applied Catalysis A: General. May2021, Vol. 617, pN.PAG-N.PAG. 1p.
Subjects: Platinum nanoparticles, Chemical decomposition, Metal nanoparticles, Sonochemistry, Activated carbon, Thermal resistance, Catalyst poisoning
Abstract: [Display omitted] • Simple sonochemistry route to prepare single Pt atoms anchored on carbonaceous materials. • Unexpected NO decomposition on single Pt atoms related to weak O-inhibiting effect. • New mechanistic insights in NO decomposition: from nanoparticles to single atoms • High thermal resistance of single Pt atoms up to 650 °C in wet conditions Activated carbon containing highly dispersed platinum (Pt/C with ca. 1 wt.%) catalyst was synthesized according to the simple sonochemistry route followed by a drying step in air at 130 °C. STEM-HAADF micrographs indicate the presence of Pt single atoms (SAs) homogeneously dispersed on the activated carbon. The catalytic decomposition of NO has been investigated on samples pre-reduced at 250 °C and 500 °C. The Pt SAs remain stable and exhibit a surprisingly high activity which does not reflect the usually observed structure-sensitivity of NO dissociation. In addition, remarkable catalyst stability is observed after reaction at 650 °C in the presence of water. On the other hand, pre-reduction at 500 °C induces a strong deactivation related to a coalescence process with the subsequent generation of large Pt clusters, despite some small metal nanoparticles are still present in the sample. Accordingly, the structure-sensitivity of this reaction is restored. All these observations have been rationalized through the examinations of various reaction mechanisms. [ABSTRACT FROM AUTHOR]
Copyright of Applied Catalysis A: General 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.)
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An: 149919017
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  Label: Title
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  Data: Cooperative effect of Pt single-atoms and nanoparticles supported on carbonaceous materials: Catalytic NO decomposition as a probe reaction.
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  Data: <searchLink fieldCode="AR" term="%22Granger%2C+Pascal%22">Granger, Pascal</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> pascal.granger@univ-lille.fr</i><br /><searchLink fieldCode="AR" term="%22Wu%2C+Jianxiong%22">Wu, Jianxiong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ba%2C+Housseinou%22">Ba, Housseinou</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Baaziz%2C+Walid%22">Baaziz, Walid</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ersen%2C+Ovidiu%22">Ersen, Ovidiu</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zafeiratos%2C+Spyridon%22">Zafeiratos, Spyridon</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nhut%2C+Jean-Mario%22">Nhut, Jean-Mario</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Giambastiani%2C+Giuliano%22">Giambastiani, Giuliano</searchLink><relatesTo>1,2,4</relatesTo> (AUTHOR)<i> giambastiani@unistra.fr</i><br /><searchLink fieldCode="AR" term="%22Pham-Huu%2C+Cuong%22">Pham-Huu, Cuong</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> cuong.pham-huu@unista.fr</i>
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  Data: <searchLink fieldCode="JN" term="%22Applied+Catalysis+A%3A+General%22">Applied Catalysis A: General</searchLink>. May2021, Vol. 617, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Platinum+nanoparticles%22">Platinum nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+decomposition%22">Chemical decomposition</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+nanoparticles%22">Metal nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Sonochemistry%22">Sonochemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Activated+carbon%22">Activated carbon</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+resistance%22">Thermal resistance</searchLink><br /><searchLink fieldCode="DE" term="%22Catalyst+poisoning%22">Catalyst poisoning</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: [Display omitted] • Simple sonochemistry route to prepare single Pt atoms anchored on carbonaceous materials. • Unexpected NO decomposition on single Pt atoms related to weak O-inhibiting effect. • New mechanistic insights in NO decomposition: from nanoparticles to single atoms • High thermal resistance of single Pt atoms up to 650 °C in wet conditions Activated carbon containing highly dispersed platinum (Pt/C with ca. 1 wt.%) catalyst was synthesized according to the simple sonochemistry route followed by a drying step in air at 130 °C. STEM-HAADF micrographs indicate the presence of Pt single atoms (SAs) homogeneously dispersed on the activated carbon. The catalytic decomposition of NO has been investigated on samples pre-reduced at 250 °C and 500 °C. The Pt SAs remain stable and exhibit a surprisingly high activity which does not reflect the usually observed structure-sensitivity of NO dissociation. In addition, remarkable catalyst stability is observed after reaction at 650 °C in the presence of water. On the other hand, pre-reduction at 500 °C induces a strong deactivation related to a coalescence process with the subsequent generation of large Pt clusters, despite some small metal nanoparticles are still present in the sample. Accordingly, the structure-sensitivity of this reaction is restored. All these observations have been rationalized through the examinations of various reaction mechanisms. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Applied Catalysis A: General 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.apcata.2021.118103
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Platinum nanoparticles
        Type: general
      – SubjectFull: Chemical decomposition
        Type: general
      – SubjectFull: Metal nanoparticles
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      – SubjectFull: Sonochemistry
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      – SubjectFull: Activated carbon
        Type: general
      – SubjectFull: Thermal resistance
        Type: general
      – SubjectFull: Catalyst poisoning
        Type: general
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      – TitleFull: Cooperative effect of Pt single-atoms and nanoparticles supported on carbonaceous materials: Catalytic NO decomposition as a probe reaction.
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            – D: 05
              M: 05
              Text: May2021
              Type: published
              Y: 2021
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