Size-selected clusters as heterogeneous model catalysts under applied reaction conditions

Sebastian Kunz; Katrin Hartl; Florian F. Nesselberger Markus and
   Schweinberger; Gihan Kwon; Karl J. J. Hanzlik Marianne and
   Mayrhofer; Ueli Heiz; Matthias Arenz

doi:10.1039/c0cp00288g

Size-selected clusters as heterogeneous model catalysts under applied reaction conditions

Sebastian Kunz, Katrin Hartl, Florian F. Nesselberger Markus and Schweinberger, Gihan Kwon, Karl J. J. Hanzlik Marianne and Mayrhofer, Ueli Heiz, Matthias Arenz

Kemisk Institut

67 Citationer (Scopus)

Abstract

First results of investigations are presented, where size-selected metal clusters generated in ultra high vacuum (UHV) are transferred to ambient conditions and tested for suitable electrochemical applications. As demonstrated, the transfer allows for the characterization of clusters by transmission electron microscopy (TEM) as well as catalytic measurements, which is exemplified by the application of electrochemical measurements. It is demonstrated that well known electrochemical processes on the carbon supported Pt clusters are detected, and thus Pt clusters can be characterized with respect to their accessible surface area, an essential requirement for the study of catalytic processes. Furthermore, as an example for an important electrocatalytic process, it is shown that the oxygen reduction reaction can be probed on the cluster samples featuring a detrimental particle size effect, previously reported for industrial catalysts as well.

Originalsprog	Engelsk
Tidsskrift	Physical Chemistry Chemical Physics
Vol/bind	12
Udgave nummer	35
Sider (fra-til)	10288-10291
ISSN	1463-9076
DOI	https://doi.org/10.1039/c0cp00288g
Status	Udgivet - 21 sep. 2010

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10.1039/c0cp00288g

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title = "Size-selected clusters as heterogeneous model catalysts under applied reaction conditions",

abstract = "First results of investigations are presented, where size-selected metal clusters generated in ultra high vacuum (UHV) are transferred to ambient conditions and tested for suitable electrochemical applications. As demonstrated, the transfer allows for the characterization of clusters by transmission electron microscopy (TEM) as well as catalytic measurements, which is exemplified by the application of electrochemical measurements. It is demonstrated that well known electrochemical processes on the carbon supported Pt clusters are detected, and thus Pt clusters can be characterized with respect to their accessible surface area, an essential requirement for the study of catalytic processes. Furthermore, as an example for an important electrocatalytic process, it is shown that the oxygen reduction reaction can be probed on the cluster samples featuring a detrimental particle size effect, previously reported for industrial catalysts as well.",

author = "Sebastian Kunz and Katrin Hartl and {Nesselberger Markus and Schweinberger}, {Florian F.} and Gihan Kwon and {Hanzlik Marianne and Mayrhofer}, {Karl J. J.} and Ueli Heiz and Matthias Arenz",

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doi = "10.1039/c0cp00288g",

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T1 - Size-selected clusters as heterogeneous model catalysts under applied reaction conditions

AU - Kunz, Sebastian

AU - Hartl, Katrin

AU - Nesselberger Markus and Schweinberger, Florian F.

AU - Kwon, Gihan

AU - Hanzlik Marianne and Mayrhofer, Karl J. J.

AU - Heiz, Ueli

AU - Arenz, Matthias

PY - 2010/9/21

Y1 - 2010/9/21

N2 - First results of investigations are presented, where size-selected metal clusters generated in ultra high vacuum (UHV) are transferred to ambient conditions and tested for suitable electrochemical applications. As demonstrated, the transfer allows for the characterization of clusters by transmission electron microscopy (TEM) as well as catalytic measurements, which is exemplified by the application of electrochemical measurements. It is demonstrated that well known electrochemical processes on the carbon supported Pt clusters are detected, and thus Pt clusters can be characterized with respect to their accessible surface area, an essential requirement for the study of catalytic processes. Furthermore, as an example for an important electrocatalytic process, it is shown that the oxygen reduction reaction can be probed on the cluster samples featuring a detrimental particle size effect, previously reported for industrial catalysts as well.

AB - First results of investigations are presented, where size-selected metal clusters generated in ultra high vacuum (UHV) are transferred to ambient conditions and tested for suitable electrochemical applications. As demonstrated, the transfer allows for the characterization of clusters by transmission electron microscopy (TEM) as well as catalytic measurements, which is exemplified by the application of electrochemical measurements. It is demonstrated that well known electrochemical processes on the carbon supported Pt clusters are detected, and thus Pt clusters can be characterized with respect to their accessible surface area, an essential requirement for the study of catalytic processes. Furthermore, as an example for an important electrocatalytic process, it is shown that the oxygen reduction reaction can be probed on the cluster samples featuring a detrimental particle size effect, previously reported for industrial catalysts as well.

U2 - 10.1039/c0cp00288g

DO - 10.1039/c0cp00288g

M3 - Journal article

SN - 1463-9076

VL - 12

SP - 10288

EP - 10291

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 35

ER -

Size-selected clusters as heterogeneous model catalysts under applied reaction conditions

Abstract

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