A Combined System of TiO2 Suspension and Platinum Electrodes Used for Photoelectrochemical Degradation of a Dye in NaCl Solution

Abstract:

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Photoelectrochemical (PEC) degradation of Procion Red MX-5B was investigated in aqueous NaCl solutions. PEC degradation efficiencies showed strong dependence on the concentrations of aqueous NaCl solutions and applied potentials. 95% decolorization of the dye could be achieved in 10 minutes at applied potential of 8 V in 0.3 M NaCl solution, while the efficiency was only 35% by photocatalytic oxidation. Electrodegradation can be as powerful as PEC degradation upon dye decolorization when the potential exceeds 5 volts. However, it can not mineralize dye degradation intermediates by itself alone. PEC degradation performed very high TOC removal capacity and nearly 80% of total organic carbon was removed in the first hour of reaction, compared with 50% removal in PCO process during the same period.

Info:

Periodical:

Edited by:

Zhenyu Du and Bin Liu

Pages:

227-230

DOI:

10.4028/www.scientific.net/AMM.26-28.227

Citation:

W. J. Zhang et al., "A Combined System of TiO2 Suspension and Platinum Electrodes Used for Photoelectrochemical Degradation of a Dye in NaCl Solution", Applied Mechanics and Materials, Vols. 26-28, pp. 227-230, 2010

Online since:

June 2010

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$35.00

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