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Active sites of ato...
Active sites of atomically dispersed Pt supported on Gd-doped ceria with improved low temperature performance for CO oxidation
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- Li, Yuanyuan (författare)
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook NY 11794 USA; Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge TN 37831 USA
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- Wang, Haodong (författare)
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook NY 11794 USA
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- Song, Haohong (författare)
- Interdisciplinary Materials Science, Vanderbilt University, Nashville TN 37235 USA
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- Rui, Ning (författare)
- Chemistry Division, Brookhaven National Laboratory, Upton NY 11973 USA
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- Kottwitz, Matthew (författare)
- Department of Chemistry, University of Illinois, Urbana IL 61801 USA
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- Senanayake, Sanjaya D. (författare)
- Chemistry Division, Brookhaven National Laboratory, Upton NY 11973 USA
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- Nuzzo, Ralph G. (författare)
- KTH,Yt- och korrosionsvetenskap,Department of Chemistry, University of Illinois, Urbana IL 61801 USA
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- Wu, Zili (författare)
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge TN 37831 USA
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- Jiang, De En (författare)
- Interdisciplinary Materials Science, Vanderbilt University, Nashville TN 37235 USA; Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville TN 37235 USA
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- Frenkel, Anatoly I. (författare)
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook NY 11794 USA; Chemistry Division, Brookhaven National Laboratory, Upton NY 11973 USA
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(creator_code:org_t)
- Royal Society of Chemistry (RSC), 2023
- 2023
- Engelska.
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Ingår i: Chemical Science. - : Royal Society of Chemistry (RSC). - 2041-6520 .- 2041-6539. ; 14:44, s. 12582-12588
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- “Single-atom” catalysts (SACs) have been the focus of intense research, due to debates about their reactivity and challenges toward determining and designing “single-atom” (SA) sites. To address the challenge, in this work, we designed Pt SACs supported on Gd-doped ceria (Pt/CGO), which showed improved activity for CO oxidation compared to its counterpart, Pt/ceria. The enhanced activity of Pt/CGO was associated with a new Pt SA site which appeared only in the Pt/CGO catalyst under CO pretreatment at elevated temperatures. Combined X-ray and optical spectroscopies revealed that, at this site, Pt was found to be d-electron rich and bridged with Gd-induced defects via an oxygen vacancy. As explained by density functional theory calculations, this site opened a new path via a dicarbonyl intermediate for CO oxidation with a greatly reduced energy barrier. These results provide guidance for rationally improving the catalytic properties of SA sites for oxidation reactions.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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Li, Yuanyuan
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Wang, Haodong
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Song, Haohong
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Rui, Ning
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Kottwitz, Matthe ...
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Senanayake, Sanj ...
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visa fler...
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Nuzzo, Ralph G.
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Wu, Zili
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Jiang, De En
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Frenkel, Anatoly ...
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visa färre...
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