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Local chemical properties of nanostructured Au-Pd bimetal model catalysts

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vts_528.pdf (25.34Mb)
321 Seiten
Veröffentlichung
2000-07-23
Authors
Ruff, Martin
Dissertation


Faculties
Fakultät für Naturwissenschaften
Abstract
The local chemical properties of specific sites on bimetallic Au-Pd(111) surfaces are investigated in a combined STM, HREELS, and TPD study. Growth and alloying processes are analysed on the atomic scale using STM. From atomically resolved STM images precise information on the structure and composition of bimetallic Au-Pd(111) surfaces is obtained. The adsorption behaviour of carbon monoxide and ethylene on these well-defined bimetallic surfaces is analysed using HREELS and TPD. The combination of STM, HREELS, and TPD in one UHV chamber allows to determine the chemical properties of sites like Au island edge atoms, Pd atoms in a Au matrix (Pd monomers), or Pd dimers in a Au matrix.
Date created
2000
Subject headings
[GND]: Adsorption | Binäre Legierung | Elektronen-Energieverlustspektroskopie | Ethylen | Gold | Heterogene Katalyse | Kohlenmonoxid | Kristallwachstum | Oberflächenchemie | Palladium | Rastertunnelmikroskopie | Thermische Desorptionsspektroskopie
[LCSH]: Alloys | Carbon monoxide | Crystal growth | Electron energy loss spectroscopy | Epitaxy | Ethylene | Heterogeneous catalysis | High resolution spectroscopy | Scanning tunneling microscopy | Surface chemistry
[Free subject headings]: Oberflächenlegierung | Surface alloy | Temperature programmed desorption
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Standard (Fassung vom 03.05.2003)
https://oparu.uni-ulm.de/xmlui/license_v1

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DOI & citation

Please use this identifier to cite or link to this item: http://dx.doi.org/10.18725/OPARU-55

Ruff, Martin (2000): Local chemical properties of nanostructured Au-Pd bimetal model catalysts. Open Access Repositorium der Universität Ulm und Technischen Hochschule Ulm. Dissertation. http://dx.doi.org/10.18725/OPARU-55
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