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Photoelectrocatalytic degradation of camphor on TiO2/RuO2 electrodes

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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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Acknowledgments

This work was funded by grants from the National Health Foundation (FUNASA), Brazil

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Authors and Affiliations

  1. Departamento de Química, Universidade Federal do Paraná, PO Box 19081, 81531-990, Curitiba, PR, Brazil

    Adriane Martins de Freitas, Carla Sirtori & Patricio Peralta-Zamora

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  1. Adriane Martins de Freitas
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  2. Carla Sirtori
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  3. Patricio Peralta-Zamora
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Correspondence to Patricio Peralta-Zamora.

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de Freitas, A.M., Sirtori, C. & Peralta-Zamora, P. Photoelectrocatalytic degradation of camphor on TiO2/RuO2 electrodes. Environ Chem Lett 9, 97–102 (2011). https://doi.org/10.1007/s10311-009-0252-8

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  • DOI: https://doi.org/10.1007/s10311-009-0252-8

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