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Enhancement of the Catalytic Activity of a Macrocyclic Cobalt(II) Complex for the Electroreduction of O_2 by Adsorption on Graphite

Bhugun, Iqbal and Anson, Fred C. (1996) Enhancement of the Catalytic Activity of a Macrocyclic Cobalt(II) Complex for the Electroreduction of O_2 by Adsorption on Graphite. Inorganic Chemistry, 35 (25). pp. 7253-7259. ISSN 0020-1669. http://resolver.caltech.edu/CaltechAUTHORS:20180514-153140758

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Abstract

In solution, the [(tim)Co]^(2+) complex (tim = 2,3,9,10-tetramethyl-1,4,8,11-tetraazacyclotetradeca-1,3,8,10-tetraene) reacts only slowly with O_2, but upon adsorption on graphite electrodes it becomes an active catalyst for the reduction of O_2 to H_2O_2. The remarkable enhancement in catalytic activity is attributed to a higher affinity for O_2 of the adsorbed complex as a result of its interaction with functional groups on the surface of roughened or oxidized graphite. A possible catalytic mechanism is proposed.


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https://doi.org/10.1021/ic9608399DOIArticle
Additional Information:© 1996 American Chemical Society. Received July 17, 1996. Publication Date (Web): December 4, 1996. This work was supported by the National Science Foundation. I.B. was the grateful recipient of an A. A. Noyes Postdoctoral Fellowship at Caltech. Discussions with Dr. Beat Steiger were stimulating and very helpful.
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Record Number:CaltechAUTHORS:20180514-153140758
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20180514-153140758
Official Citation:Enhancement of the Catalytic Activity of a Macrocyclic Cobalt(II) Complex for the Electroreduction of O2 by Adsorption on Graphite. Iqbal Bhugun and Fred C. Anson. Inorganic Chemistry 1996 35 (25), 7253-7259. DOI: 10.1021/ic9608399
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:86397
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:18 May 2018 18:20
Last Modified:18 May 2018 18:20

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