Photoelectrochemical conversion of NO_3 to N_2 by using a photoelectrochemical cell composed of a nanoporous TiO_2 film photoanode and an O_2 reducing cathode

摘要

Photoelectrochemical conversion of nitrate anions into dinitrogen was successfully achieved by using a photoelectrochemical cell composed of a nanoporous TiO_2 film photoanode and an O_2 reducing cathode in the presence of NH_3, which can be regarded as a model of denitrification and is of importance for environmental cleaning.rnPhotoelectrochemical reactions at semiconductor electrodes were investigated before the 1960s, and the work on a crystalline n-TiO_2 photoanode to photodecompose water by UV light attracted a great deal of attention. Organic compounds have also been photodecomposed by TiO_2.