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Application of scanning electrochemical microscopy to generation/collection experiments with high collection efficiency

Lee, Chongmok and Kwak, Juhyoun and Anson, Fred C. (1991) Application of scanning electrochemical microscopy to generation/collection experiments with high collection efficiency. Analytical Chemistry, 63 (14). pp. 1501-1504. ISSN 0003-2700. https://resolver.caltech.edu/CaltechAUTHORS:20170830-144806113

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Abstract

The technique of scanning electrochemical microscopy (SECM) was introduced by Bard and co-workers (1) who have utilized it in a variety of experiments (2). The use of a microelectrode placed close to a substrate electrode to detect electroactive products generated at the latter, as described by Engstrom and co-workers (3,4),is one attractive application of the SECM technique (1). In previous studies, this type of generation/detection experiment has usually been carried out with the microelectrode used as the detector electrode (1-5). In the present study, a larger (100 µm diameter) substrate electrode is used to detect and collect electrode reaction products generated at a microtip electrode positioned at various distances above the substrate electrode. The collection efficiency (in the sense employed for rotating ring-disk electrodes (6)) of such an arrangement is virtually 100% at easily achievable separation distances. The advantages of carrying out generation/collection experiments with the present apparatus are exemplified with some simple experimental systems. Comparisons with similar recent experiments in which arrays of microband electrodes are utilized (7,8) are also provided.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1021/ac00014a030DOIArticle
http://pubs.acs.org/doi/abs/10.1021/ac00014a030PublisherArticle
Additional Information:© 1991 American Chemical Society. Received for review January 14, 1991. Accepted April 18, 1991. This work was supported by the National Science Foundation. This is Contribution No. 8379 from the Division of Chemistry and Chemical Engineering.
Funders:
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Other Numbering System NameOther Numbering System ID
Caltech Division of Chemistry and Chemical Engineering8379
Issue or Number:14
Record Number:CaltechAUTHORS:20170830-144806113
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170830-144806113
Official Citation:Application of scanning electrochemical microscopy to generation/collection experiments with high collection efficiency Chongmok Lee, Juhyoun Kwak, and Fred C. Anson Analytical Chemistry 1991 63 (14), 1501-1504 DOI: 10.1021/ac00014a030
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:80987
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:30 Aug 2017 22:04
Last Modified:03 Oct 2019 18:37

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