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Synthesis and application of gas diffusion cathodes in an advanced type of undivided electrochemical cell
S Z J Zaidi1,2, Y Luan3, C Harito4
1Electrochemical Engineering Laboratory, Energy Technology Research Group, Faculty of Engineering and Environment, Engineering Sciences, University of Southampton, Highfield, Southampton, SO17 1BJ, UK. zohaib.icet@pu.edu.pk.
Abstract:
This paper reports the oxidation of Remazol black B dye by employing iron ions catalyst based gas diffusion cathodes, (GDCs). A GDC was synthesized by using a layer of carbon black and iron ions catalyst for oxygen reduction to hydrogen peroxide. The results demonstrated around 97% decolorization of Remazol black-B dye for 50 min by iron ions catalyst based GDC. The degradation study was performed under electrogenerated hydrogen peroxide at a constant voltage of - 0.6 V vs Hg/HgSO4 in which the rate of degradation was correlated with hydrogen peroxide production. Overall, the GDC's found to be effective method to degrade the dyes via electro-Fenton.
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