Photoelectrocatalytic degradation of camphor on TiO2/RuO2 electrodes |
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Authors: | Adriane Martins de Freitas Carla Sirtori Patricio Peralta-Zamora |
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Institution: | (1) Departamento de Qu?mica, Universidade Federal do Paran?, PO Box 19081, 81531-990 Curitiba, PR, Brazil; |
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Abstract: | The degradation of camphor using titanium/ruthenium dioxide (TiO2/RuO2; 70:30) electrodes was investigated in a photoelectrochemical thin-film reactor under near UV light irradiation. Two different
electrolytes (Na2SO4 and NaCl) were used in this work. Camphor degradation was monitored by solvent extraction methods and gas chromatography
(GC) analysis. Comparative studies between photoelectrochemical, electrochemical, photolytic, and heterogeneous photocatalytical
process were carried out. When NaCl was used, the degradation efficiency of camphor was improved, probably on account of electrochemical
generation of active chlorine species and their photochemical conversion to chlorine radicals. Under these conditions camphor
was completely mineralized at reaction times of 30 min. |
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