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Assimilatory and dissimilatory reduction of NO3- and NO2- with an (n-Bu4N)3 modified glassy-carbon electrode in water



Assimilatory and dissimilatory reduction of NO3- and NO2- with an (n-Bu4N)3 modified glassy-carbon electrode in water



Inorganic Chemistry 25(17): 3018-3022



The catalytic reduction of NO3- to NH3 with an (n-Bu4N)3modified glassy-carbon (GC) electrode has been accomplished by the controlled-potential electrolysis at -1.25 V vs. SCE in water. The current efficiency for the formation of NH3 is 80.3% at pH 10. Not only NO2- but also NH2OH were detected as reaction intermediates, and both of them are reduced to NH3 under the same conditions. On the other hand, the reduction of NO2- with the same electrode at -1.10 V vs.

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