Multiple discs coated with hierarchically-organized TiO2 anatase nanotubes served\nas photoelectrodes in a novel annular photoelectrocatalytic reactor. Electrochemical characterization\nshowed light irradiation enhanced the current response due to photogeneration of charge\ncarriers. The pharmaceutical acetaminophen was used as a representative water micropollutant.\nThe photoelectrocatalysis pseudo-first-order rate constant for acetaminophen was seven orders\nof magnitude greater than electrocatalytic treatment........................
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