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Title:Surface Coverage and Structure of Catalytic Monolayers on Au(111) Electrodes
Author(s):Niece, Brian Keith
Doctoral Committee Chair(s):Gewirth, Andrew A.
Department / Program:Chemistry
Discipline:Chemistry
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:Ph.D.
Genre:Dissertation
Subject(s):Chemistry, Analytical
Abstract:Finally, active molecular adsorbates are investigated. Cyclic voltammetric investigations of the $\alpha$-dodecatungstosilicate anion, which has potential applications in catalysis and corrosion inhibition, indicate that it binds to the Au(111) electrode throughout the double layer potential region. At positive potentials, it delays the onset of gold oxide formation. At extreme negative electrode potentials, the anion desorbs from the surface, confirming activity observed with SPM. Quartz crystal microbalance studies found a mass change smaller than that expected for a full monolayer of $\alpha$-dodecatungstosilicate anions, indicating that there is only a monolayer present on the surface and that it remains in the solution layer near the electrode surface after desorption. Finally, quartz crystal microbalance studies of uracil desorption from Au(111) in neutral solutions indicate that the desorbed mass changes linearly as a function of uracil concentration. This indicates that under these conditions uracil is actually adsorbed in a multilayer. (Abstract shortened by UMI.).
Issue Date:1997
Type:Text
Language:English
Description:161 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1997.
URI:http://hdl.handle.net/2142/84388
Other Identifier(s):(MiAaPQ)AAI9812721
Date Available in IDEALS:2015-09-25
Date Deposited:1997


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