Journal
QUIMICA NOVA
Volume 35, Issue 5, Pages 895-899Publisher
SOC BRASILEIRA QUIMICA
DOI: 10.1590/S0100-40422012000500006
Keywords
photo-electrocatalysis; dyes; electrolytes
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PHOTOELECTROCHEMICAL DEGRADATION OF REACTIVE BLUE 19 IN AQUEOUS SOLUTIONS. In this work the degradation capacity of a photo-electrocatalytic system was evaluated, mainly regarding the effect of the electrolyte solution on the degradation capacity toward a reactive textile dye. In the presence of NaCl the photo-electrochemical process shows high degradation efficiency, permitting almost total color removal in treatment of about 5 min. In view of the low degradation efficiency observed for the photocatalytic process it is possible to assume that the high degradation efficiency of the process is a function of electrochemical generation of oxidant active chlorine species, which are subsequently transformed to higher oxidant radical forms.
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