In-situ vibrational spectroscopy on Pt electrocatalysts

K. A. Friedrich; F. Henglein; U. Stimming; W. Unkauf

doi:10.1016/S0013-4686(01)00749-6

In-situ vibrational spectroscopy on Pt electrocatalysts

K. A. Friedrich
, F. Henglein
, U. Stimming
, W. Unkauf

Department of Physics

Technical University of Munich
Eckart-Werke GmbH and Co.

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

CO adsorption on structurally very different electrocatalysts, namely carbon supported Pt catalysts and adsorbed colloids on surfaces (a model system), has been studied. From a comparison of the spectra of CO monolayers on these disparate electrocatalysts, conclusions can be derived regarding the structure of the particles. A correlation between CO vibrational frequency and structural properties, e.g. isolated particles versus agglomerated particles, is found. A dependence of vibrational frequency on the particle coverage is assigned to an increasing agglomeration with increasing Pt-coverage. The spectra of the technical electrocatalysts can be explained in terms of the simpler model systems.

Original language	English
Pages (from-to)	689-694
Number of pages	6
Journal	Electrochimica Acta
Volume	47
Issue number	5
DOIs	https://doi.org/10.1016/S0013-4686(01)00749-6
State	Published - 3 Dec 2001

Keywords

CO adsorption
Colloids
Electrocatalysts

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10.1016/S0013-4686(01)00749-6

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title = "In-situ vibrational spectroscopy on Pt electrocatalysts",

abstract = "CO adsorption on structurally very different electrocatalysts, namely carbon supported Pt catalysts and adsorbed colloids on surfaces (a model system), has been studied. From a comparison of the spectra of CO monolayers on these disparate electrocatalysts, conclusions can be derived regarding the structure of the particles. A correlation between CO vibrational frequency and structural properties, e.g. isolated particles versus agglomerated particles, is found. A dependence of vibrational frequency on the particle coverage is assigned to an increasing agglomeration with increasing Pt-coverage. The spectra of the technical electrocatalysts can be explained in terms of the simpler model systems.",

keywords = "CO adsorption, Colloids, Electrocatalysts",

author = "Friedrich, \{K. A.\} and F. Henglein and U. Stimming and W. Unkauf",

year = "2001",

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doi = "10.1016/S0013-4686(01)00749-6",

language = "English",

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T1 - In-situ vibrational spectroscopy on Pt electrocatalysts

AU - Friedrich, K. A.

AU - Henglein, F.

AU - Stimming, U.

AU - Unkauf, W.

PY - 2001/12/3

Y1 - 2001/12/3

N2 - CO adsorption on structurally very different electrocatalysts, namely carbon supported Pt catalysts and adsorbed colloids on surfaces (a model system), has been studied. From a comparison of the spectra of CO monolayers on these disparate electrocatalysts, conclusions can be derived regarding the structure of the particles. A correlation between CO vibrational frequency and structural properties, e.g. isolated particles versus agglomerated particles, is found. A dependence of vibrational frequency on the particle coverage is assigned to an increasing agglomeration with increasing Pt-coverage. The spectra of the technical electrocatalysts can be explained in terms of the simpler model systems.

AB - CO adsorption on structurally very different electrocatalysts, namely carbon supported Pt catalysts and adsorbed colloids on surfaces (a model system), has been studied. From a comparison of the spectra of CO monolayers on these disparate electrocatalysts, conclusions can be derived regarding the structure of the particles. A correlation between CO vibrational frequency and structural properties, e.g. isolated particles versus agglomerated particles, is found. A dependence of vibrational frequency on the particle coverage is assigned to an increasing agglomeration with increasing Pt-coverage. The spectra of the technical electrocatalysts can be explained in terms of the simpler model systems.

KW - CO adsorption

KW - Colloids

KW - Electrocatalysts

UR - https://www.scopus.com/pages/publications/0035803106

U2 - 10.1016/S0013-4686(01)00749-6

DO - 10.1016/S0013-4686(01)00749-6

M3 - Article

AN - SCOPUS:0035803106

SN - 0013-4686

VL - 47

SP - 689

EP - 694

JO - Electrochimica Acta

JF - Electrochimica Acta

IS - 5

ER -

In-situ vibrational spectroscopy on Pt electrocatalysts

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Keywords

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