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In Situ Spectroscopic Determination of Faradaic Efficiencies in Systems with Forced Convection under Steady State: Electroreduction of Bisulfite to Dithionite on Gold in an Aqueous Electrolyteстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 26 июня 2024 г.
- Авторы: Tolmachev Yuriy V., Zhenghao Wang, Yining Hu, In Tae Bae, Daniel A.Scherson
- Журнал: Analytical Chemistry
- Том: 70
- Номер: 6
- Год издания: 1998
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 1149
- Последняя страница: 1155
- DOI: 10.1021/ac970697f
- Аннотация: The reduction of bisulfite on Au electrodes in buffered aqueous solutions (pH = 5.25) was examined by in situ near-normal-incidence UV−visible reflection absorption spectroscopy on a rotating disk electrode (RDE) and in situ transmission UV−visible spectroscopy downstream from a channel-type electrode. The currents associated with dithionite (S2O42-) formation obtained from the spectroscopic measurements were found to be lower than those expected for a one-electron, diffusion-controlled process. Faradaic efficiencies for S2O42- generation derived from RDE data yielded, in the range −0.60 to −0.75 V vs Ag/AgCl, values close to 100%. The advantages of rotating disk over channel-type electrodes for determining faradaic efficiencies by UV−visible spectroscopic techniques are discussed.
- Добавил в систему: Толмачёв Юрий Вячеславович