University of Illinois Urbana-Champaign

Segregation and Phase Dynamics in Supported Bimetallic Nanoparticles

Nashner, Michael Sydney

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https://hdl.handle.net/2142/84386

Description

Title
Segregation and Phase Dynamics in Supported Bimetallic Nanoparticles
Author(s)
Nashner, Michael Sydney
Issue Date
1997
Doctoral Committee Chair(s)
Nuzzo, Ralph G.
Department of Study
Chemistry
Discipline
Chemistry
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Materials Science
Language
eng
Abstract
The reaction between a silicon monolayer deposited on Pt(111) by chemical vapor deposition (CVD) using silane (SiH$\sb4)$ is described. Using Auger electron spectroscopy (AES), Si was found to readily diffuse into the Pt substrate and sequentially form at least two unique intermetallic Pt-Si surface structural phases with $(\surd7$ x $\surd7)R\pm19.1\sp\circ$ and $(\surd19$ x $\surd19)R\pm23.4\sp\circ$ real space unit cells as characterized by low energy electron diffraction (LEED). The reactive properties of each overlayer were studied, with respect to the clean Pt(111) surface, using CO as a chemisorption probe.
Graduation Semester
1997
Type of Resource
text
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http://hdl.handle.net/2142/84386

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