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The reduction of bromate at molybdenum oxide film cathodes
Author(s) -
Bertotti Mauro,
Pletcher Derek
Publication year - 1996
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140081206
Subject(s) - bromate , molybdenum , inorganic chemistry , catalysis , chemistry , oxide , cathode , electrode , organic chemistry , bromide
Abstract The catalytic reduction of bromate at vitreous carbon electrodes modified with a molybdenum oxide film at pH 3 has been investigated further. In addition, the reduction has been investigated at lower pH using molybdenum oxide films formed in situ from solutions containing both Mo VI and BrO 3 − . It is shown that in both systems, the variation of the current for bromate reduction with potential passes through a maximum and, hence, at more negative potentials, the surface is markedly less active for bromate reduction. With Mo VI in solution, a recovery in the catalytic activity slowly occurs and this effect has also been investigated.