Development and Implementation of New In Situ Techniques for the Study of Interfacial Phenomena

Development and Implementation of New In Situ Techniques for the Study of Interfacial Phenomena

Bibliographic Details
Main Author: Hai, Bin
Language:English
Published: Case Western Reserve University School of Graduate Studies / OhioLINK 2010
Subjects:
Cd2
ZnSe
ordinate
PBD
right ordinate
scans
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=case1259695728
id ndltd-OhioLink-oai-etd.ohiolink.edu-case1259695728
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spelling ndltd-OhioLink-oai-etd.ohiolink.edu-case12596957282021-08-03T05:33:16Z Development and Implementation of New In Situ Techniques for the Study of Interfacial Phenomena Hai, Bin Cd2 ZnSe ordinate PBD right ordinate scans <p>Hematite nanoparticles have been functionalized with a self-assembled monolayer of undecanoic acid (UA) by covalent attachment via siloxane groups. The number density of carboxylic/carboxylate groups on the surface was determined by titration and consistent with a closed-packed monolayer. The ability of these functionalized particles to adsorb Cd<sup>2+</sup> in the ppm range was demonstrated using in situ anodic stripping voltammetry.</p><p>A probe beam deflection method that allows for the heat generated or absorbed during an interfacial process to be determined in situ is herein described. These optical measurements are performed using a collimated laser beam propagating parallel to the interface through the back of a flat, optically transparent ZnSe crystal that supports a very thin film of a metal electrode in contact with the electrolyte solution. Analysis of experimental data collected for a Au electrode in sulfuric acid aqueous solutions using numerical simulations were found to be consistent with the release of ~375 kJ/mol upon formation of a monolayer of Au oxide.</p><p>The transient response of a series RC equivalent circuit to a staircase (SC) potential perturbation has been examined theoretically using experimental data reported for the Pt(111)|0.1 M HClO<sub>4</sub> interface as a model system. Solutions to the governing algebraic differential equation were obtained by numerical techniques. In general, the resulting curves were not only found to be sensitive to the time at which the current was sampled within each step, but, also, quite different than those obtained by scanning the potential at a constant rate, as in conventional linear scan voltammetry (LSV). Better agreement between the SC and LSV results could be achieved based on values of the average step currents, Q<sub>step</sub>/T.</p> 2010 English text Case Western Reserve University School of Graduate Studies / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=case1259695728 http://rave.ohiolink.edu/etdc/view?acc_num=case1259695728 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection NDLTD
language English
sources NDLTD
topic Cd2
ZnSe
ordinate
PBD
right ordinate
scans
spellingShingle Cd2
ZnSe
ordinate
PBD
right ordinate
scans
Hai, Bin
Development and Implementation of New In Situ Techniques for the Study of Interfacial Phenomena
author Hai, Bin
author_facet Hai, Bin
author_sort Hai, Bin
title Development and Implementation of New In Situ Techniques for the Study of Interfacial Phenomena
title_short Development and Implementation of New In Situ Techniques for the Study of Interfacial Phenomena
title_full Development and Implementation of New In Situ Techniques for the Study of Interfacial Phenomena
title_fullStr Development and Implementation of New In Situ Techniques for the Study of Interfacial Phenomena
title_full_unstemmed Development and Implementation of New In Situ Techniques for the Study of Interfacial Phenomena
title_sort development and implementation of new in situ techniques for the study of interfacial phenomena
publisher Case Western Reserve University School of Graduate Studies / OhioLINK
publishDate 2010
url http://rave.ohiolink.edu/etdc/view?acc_num=case1259695728
work_keys_str_mv AT haibin developmentandimplementationofnewinsitutechniquesforthestudyofinterfacialphenomena
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