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Gewirth, Andrew A. Kim, Jongwon 2015-09-25T22:13:24Z 2015-09-25T22:13:24Z 10000-01-01 2005 2005 Finally, the mechanism of the electroreduction of oxygen on Au surfaces in basic media is examined using SERS and density functional theory calculations. The spectroscopy reveals superoxide species as a reduction intermediate, while no peroxide is detected. The spectroscopy also shows the presence of superoxide after the addition of hydrogen peroxide. The calculations show no effect of OH addition to the Au(100) surface with regard to O-O length. These results suggest that the four-electron reduction of O2 on Au(100) in base arises from a disproportionation mechanism, which is enhanced on Au(100) relative to the other two low Miller index faces of Au. Made available in DSpace on 2015-09-25T22:13:24Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3199047.pdf: 4754259 bytes, checksum: 488f8454b26754dfa6039f2aff411371 (MD5) Previous issue date: 2005 Embargo set by: Seth Robbins for item 85471 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 199 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2005. http://hdl.handle.net/2142/84190 (MiAaPQ)AAI3199047 eng Chemistry, Physical Studies of the Structure and Electrocatalytic Reduction of Oxygen on Modified Electrode Surfaces text Chemistry Chemistry University of Illinois at Urbana-Champaign Dissertation Ph.D.