High sintering resistance of size-selected platinum cluster catalysts by suppressed ostwald ripening

Kristina Wettergren; Florian F. Schweinberger; Davide Deiana; Claron J. Ridge; Andrew S. Crampton; Marian D. Rötzer; Thomas Willum Hansen; Vladimir P. Zhdanov; Ueli Heiz; Christoph Langhammer

doi:10.1021/nl502686u

High sintering resistance of size-selected platinum cluster catalysts by suppressed ostwald ripening

Kristina Wettergren, Florian F. Schweinberger, Davide Deiana, Claron J. Ridge, Andrew S. Crampton, Marian D. Rötzer, Thomas Willum Hansen, Vladimir P. Zhdanov, Ueli Heiz, Christoph Langhammer

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Employing rationally designed model systems with precise atom-by-atom particle size control, we demonstrate by means of combining noninvasive in situ indirect nanoplasmonic sensing and ex situ scanning transmission electron microscopy that monomodal size-selected platinum cluster catalysts on different supports exhibit remarkable intrinsic sintering resistance even under reaction conditions. The observed stability is related to suppression of Ostwald ripening by elimination of its main driving force via size-selection. This study thus constitutes a general blueprint for the rational design of sintering resistant catalyst systems and for efficient experimental strategies to determine sintering mechanisms. Moreover, this is the first systematic experimental investigation of sintering processes in nanoparticle systems with an initially perfectly monomodal size distribution under ambient conditions.

Original language	English
Journal	Nano Letters
Volume	14
Issue number	10
Pages (from-to)	5803-5809
Number of pages	7
ISSN	1530-6984
DOIs	https://doi.org/10.1021/nl502686u
Publication status	Published - 2014

Keywords

Indirect nanoplasmonic sensing
Ostwald ripening
Sintering resistance
Size-selected clusters
Platinum

Access to Document

10.1021/nl502686u

OpenUrl availability

Full text

Cite this

@article{e2d304c8ad414a4a82345c6ee7a84458,

title = "High sintering resistance of size-selected platinum cluster catalysts by suppressed ostwald ripening",

abstract = "Employing rationally designed model systems with precise atom-by-atom particle size control, we demonstrate by means of combining noninvasive in situ indirect nanoplasmonic sensing and ex situ scanning transmission electron microscopy that monomodal size-selected platinum cluster catalysts on different supports exhibit remarkable intrinsic sintering resistance even under reaction conditions. The observed stability is related to suppression of Ostwald ripening by elimination of its main driving force via size-selection. This study thus constitutes a general blueprint for the rational design of sintering resistant catalyst systems and for efficient experimental strategies to determine sintering mechanisms. Moreover, this is the first systematic experimental investigation of sintering processes in nanoparticle systems with an initially perfectly monomodal size distribution under ambient conditions.",

keywords = "Indirect nanoplasmonic sensing, Ostwald ripening, Sintering resistance, Size-selected clusters, Platinum",

author = "Kristina Wettergren and Schweinberger, {Florian F.} and Davide Deiana and Ridge, {Claron J.} and Crampton, {Andrew S.} and R{\"o}tzer, {Marian D.} and Hansen, {Thomas Willum} and Zhdanov, {Vladimir P.} and Ueli Heiz and Christoph Langhammer",

year = "2014",

doi = "10.1021/nl502686u",

language = "English",

volume = "14",

pages = "5803--5809",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

number = "10",

}

TY - JOUR

T1 - High sintering resistance of size-selected platinum cluster catalysts by suppressed ostwald ripening

AU - Wettergren, Kristina

AU - Schweinberger, Florian F.

AU - Deiana, Davide

AU - Ridge, Claron J.

AU - Crampton, Andrew S.

AU - Rötzer, Marian D.

AU - Hansen, Thomas Willum

AU - Zhdanov, Vladimir P.

AU - Heiz, Ueli

AU - Langhammer, Christoph

PY - 2014

Y1 - 2014

N2 - Employing rationally designed model systems with precise atom-by-atom particle size control, we demonstrate by means of combining noninvasive in situ indirect nanoplasmonic sensing and ex situ scanning transmission electron microscopy that monomodal size-selected platinum cluster catalysts on different supports exhibit remarkable intrinsic sintering resistance even under reaction conditions. The observed stability is related to suppression of Ostwald ripening by elimination of its main driving force via size-selection. This study thus constitutes a general blueprint for the rational design of sintering resistant catalyst systems and for efficient experimental strategies to determine sintering mechanisms. Moreover, this is the first systematic experimental investigation of sintering processes in nanoparticle systems with an initially perfectly monomodal size distribution under ambient conditions.

AB - Employing rationally designed model systems with precise atom-by-atom particle size control, we demonstrate by means of combining noninvasive in situ indirect nanoplasmonic sensing and ex situ scanning transmission electron microscopy that monomodal size-selected platinum cluster catalysts on different supports exhibit remarkable intrinsic sintering resistance even under reaction conditions. The observed stability is related to suppression of Ostwald ripening by elimination of its main driving force via size-selection. This study thus constitutes a general blueprint for the rational design of sintering resistant catalyst systems and for efficient experimental strategies to determine sintering mechanisms. Moreover, this is the first systematic experimental investigation of sintering processes in nanoparticle systems with an initially perfectly monomodal size distribution under ambient conditions.

KW - Indirect nanoplasmonic sensing

KW - Ostwald ripening

KW - Sintering resistance

KW - Size-selected clusters

KW - Platinum

U2 - 10.1021/nl502686u

DO - 10.1021/nl502686u

M3 - Journal article

C2 - 25198035

SN - 1530-6984

VL - 14

SP - 5803

EP - 5809

JO - Nano Letters

JF - Nano Letters

IS - 10

ER -

High sintering resistance of size-selected platinum cluster catalysts by suppressed ostwald ripening

Abstract

Keywords

Access to Document

OpenUrl availability

Fingerprint

Cite this