The independent electrochemical detection of H2O2 and O2 in aqueous alkaline solutions on an alkylsilanized gold electrode.
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概要
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The cyclic voltammetric studies of H<SUB>2</SUB>O<SUB>2</SUB> and O<SUB>2</SUB> in aqueous alkaline solutions were carried out on stationary gold electrodes unmodified and modified chemically with dodecyltriethoxysilane. Although two cathodic waves were observed for both H<SUB>2</SUB>O<SUB>2</SUB> and O<SUB>2</SUB> on the unmodified electrode, only the second wave was observed for H<SUB>2</SUB>O<SUB>2</SUB> on the modified electrode. Since the first cathodic wave of H<SUB>2</SUB>O<SUB>2</SUB> overlaps that of O<SUB>2</SUB> on the unmodified electrode, the disappearance of the first wave of H<SUB>2</SUB>O<SUB>2</SUB> makes it possible to distinguish O<SUB>2</SUB> from H<SUB>2</SUB>O<SUB>2</SUB> on the modified electrode. The effect of alkylsilanization on the diminution and evolution of H<SUB>2</SUB>O<SUB>2</SUB> or O<SUB>2</SUB> on gold electrodes was also confirmed by employing rotating ring-disk gold electrodes unmodified and modified similarly with dodecyltriethoxysilane. Furthermore, the reduction mechanism of H<SUB>2</SUB>O<SUB>2</SUB> and the application of the independent electrochemical detection of H<SUB>2</SUB>O<SUB>2</SUB> and O<SUB>2</SUB> are discussed.
- 公益社団法人 日本化学会の論文
著者
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Fujihira Masamichi
Department Of Biomolecular Engineering Tokyo Institute Of Technology
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Aoyagui Shigeru
Department of Chemical Engineering, Faculty of Engineering, Tokyo Institute of Technology
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Muraki Hiroji
Department of Chemical Engineering, Tokyo Institute of Technology
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