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Electrochemical and atomic force mic...

Boxley, Chett Joseph.

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Electrochemical and atomic force microscopy investigations of gold nanoparticles and metal oxide surfaces.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Electrochemical and atomic force microscopy investigations of gold nanoparticles and metal oxide surfaces./
Author:	Boxley, Chett Joseph.
Description:	154 p.
Notes:	Source: Dissertation Abstracts International, Volume: 64-08, Section: B, page: 3790.
Contained By:	Dissertation Abstracts International64-08B.
Subject:	Chemistry, Analytical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3100852

Electrochemical and atomic force microscopy investigations of gold nanoparticles and metal oxide surfaces.
Boxley, Chett Joseph.

Electrochemical and atomic force microscopy investigations of gold nanoparticles and metal oxide surfaces. - 154 p.

Source: Dissertation Abstracts International, Volume: 64-08, Section: B, page: 3790.

Thesis (Ph.D.)--The University of Utah, 2003.

This dissertation describes electrochemical and atomic force microscopy (AFM) investigations of several nanostructured electrode/electrolyte interfaces. Chapter 1 introduces the fundamental aspects of metal electrodeposition at highly oriented pyrolytic graphite (HOPG) substrates. Chapter 2 describes the electrochemical deposition and re-oxidation of Au at HOPG, and an unusual stabilization of Au nanoparticles on the upper plane of graphite step edges. Scanning electron microscopy (SEM) and AFM show that Au nanoparticles decorate the graphite surface at short deposition times, and that a small percentage of these particles grow into large micrometer-sized crystallites. Subsequent re-oxidation of the deposited metal reveals that the Au crystallites are readily oxidized, but the Au nanoparticles remain stabilized along the upper plane of the graphite step edges.Subjects--Topical Terms:

586156
Chemistry, Analytical.

Electrochemical and atomic force microscopy investigations of gold nanoparticles and metal oxide surfaces.
LDR:02927nmm 2200265 4500 001 1864657
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008 130614s2003 eng d
035 $a (UnM)AAI3100852
035 $a AAI3100852
040 $a UnM $c UnM
100 1 $a Boxley, Chett Joseph. $3 1952138
245 1 0 $a Electrochemical and atomic force microscopy investigations of gold nanoparticles and metal oxide surfaces.
300 $a 154 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-08, Section: B, page: 3790.
500 $a Adviser: Henry S. White.
502 $a Thesis (Ph.D.)--The University of Utah, 2003.
520 $a This dissertation describes electrochemical and atomic force microscopy (AFM) investigations of several nanostructured electrode/electrolyte interfaces. Chapter 1 introduces the fundamental aspects of metal electrodeposition at highly oriented pyrolytic graphite (HOPG) substrates. Chapter 2 describes the electrochemical deposition and re-oxidation of Au at HOPG, and an unusual stabilization of Au nanoparticles on the upper plane of graphite step edges. Scanning electron microscopy (SEM) and AFM show that Au nanoparticles decorate the graphite surface at short deposition times, and that a small percentage of these particles grow into large micrometer-sized crystallites. Subsequent re-oxidation of the deposited metal reveals that the Au crystallites are readily oxidized, but the Au nanoparticles remain stabilized along the upper plane of the graphite step edges.
520 $a Chapter 3 introduces the properties of metal/oxide films, including their structure and growth properties. Chapter 4 describes the application of conducting atomic force microscopy (CAFM) to visualize the heterogeneous electronic conductivity of Ti/TiO2 electrodes. Conductivity through the TiO2 film was found to preferentially occur at grain boundaries, although large spatial variations in the oxide film conductivity are also observed above topographically featureless regions of grain faces. Chapter 5 discusses cyclic voltammetric investigations of Al/Al2O3 film dissolution in the absence and presence of aggressive halide ions (i.e. Cl- and Br-). Computer simulations, based on the high field growth model, have been employed to extract dissolution rates of the oxide film as a function of [Cl-]. It has been shown that an &sim;50 fold increase in the dissolution rate of the Al2O 3 film occurs when Cl- is added to borate solutions. Chapter 6 describes chronoamperometric studies of Al2O3 film dissolution in the presence of halide ions. Also discussed is the relationship between pitting potential of the Al/Al2O3 film and the dissolution rate of the oxide film.
590 $a School code: 0240.
650 4 $a Chemistry, Analytical. $3 586156
690 $a 0486
710 2 0 $a The University of Utah. $3 1017410
773 0 $t Dissertation Abstracts International $g 64-08B.
790 1 0 $a White, Henry S., $e advisor
790 $a 0240
791 $a Ph.D.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3100852