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Electrochemical rea...
Electrochemical reactivity in nanoscale domains: O-2 reduction on a fullerene modified gold surface
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Kuzume, A. (author)
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Herrero, E. (author)
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Feliu, J. M. (author)
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- Ahlberg, Elisabet, 1952 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry,University of Gothenburg
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Nichols, R. J. (author)
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Schiffrin, D. J. (author)
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(creator_code:org_t)
- Royal Society of Chemistry (RSC), 2005
- 2005
- English.
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In: Physical Chemistry Chemical Physics. - : Royal Society of Chemistry (RSC). - 1463-9076 .- 1463-9084. ; 7:6, s. 1293-1299
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Abstract
Subject headings
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- Fullerene is strongly adsorbed on both single crystal and polycrystalline gold surfaces and its specific adsorption resulted in the formation of high coverage large hexagonal rafts with strong interactions between the adsorbed fullerene molecules and the Au substrate. The oxygen reduction reaction (ORR) was investigated on these surfaces to determine their influence on the reduction mechanism. Oxygen reduction did not take place on the fullerene overlayer but proceeded on the sub-nanometer sized exposed pockets of the underlying Au substrate. Reduction at these confined sites produces hydrogen peroxide selectively. This effect is ascribed to the blocking action, or so-called "third body effect'', of the adsorbed fullerene molecules, which do not display electrocatalytic properties for oxygen reduction.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- SINGLE-CRYSTAL SURFACES
- SCANNING-TUNNELING-MICROSCOPY
- GLASSY-CARBON
- ELECTRODES
- OXYGEN REDUCTION
- AQUEOUS-SOLUTIONS
- UNDERPOTENTIAL
- DEPOSITION
- C-60 FILMS
- PT(111) SURFACES
- SUPEROXIDE ION
- INDEX
- INDEX
Publication and Content Type
- ref (subject category)
- art (subject category)
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