Magnetic Resonance at Electrified Interfaces: Study of Carbon Monoxide on Platinum

The work is concerned with CO binding to platinum in an electrochemical environment, and the development of equipment and methodology for the enhanced interface of electrochemical and NMR techniques. In this work, the author shows (using variable temperature NMR experiments) that the electrochemical oxidation process used forms CO on polycrystalline platinum powders, and the CO occupies only a single type of surface site. The activation energies for CO surface diffusion is deduced using a multi-parameter fit and the resulting variables fit nicely with what is known about the system. A comparison of results for CO on Pt at the gas/solid and solid/liquid interfaces are done. Furthermore, the improvement of the NMRE cell, which allows for simultaneous voltammetries and NMR measurements to be demonstrated by obtaining data for potential dependent chemical shifts of CO on platinum powder at room temperature. A brief synopsis of platinum NMR data is given. Finally an extensive set of materials and methodologies is presented along with descriptions of equipment required for all discussed measurements.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Chemistry

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Day, James Bruce

Contributors dc:contributor

• Wieckowski, Andrzej

• Physics, Electricity and Magnetism

Language dc:language

eng

Identifier

(MiAaPQ)AAI9717268

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/84359