Degradation of 4-Chlorophenol Using a Pd/MWNTs Gas Diffusion Electrode
In a diaphragm electrolyze system with a Ti/RuO2/IrO2 anode and the Pd/MWNTs gas diffusion cathode, the degradation of 4-chlorophenol was fully studied by the electrochemical reduction and the simultaneous oxidation of the cathode and anode. The results indicated that the optimization electrolyte concentration is 0.08 mol/L. The Cl- removal reached 94.8% after 80 min electrolysis with H2 feeding. After 120 min electrolysis, the removal of 4-chlorophenol in the anodic and cathode compartments were 98.5% and 90.6%, respectively. Additionally, the TOC removal reached 65% and 70% in the anodic and cathodic compartment respectively after 140 min. By the UV scanner analysis of the electrolyte, the 4-chlorophenol and benzoquinone were oxidized by the oxides formed on the cathode, while the benzoquinone was found accumulated in the anodic compartment.
Hexing Li, Qunjie Xu and Daquan Zhang
X. J. Wei et al., "Degradation of 4-Chlorophenol Using a Pd/MWNTs Gas Diffusion Electrode", Advanced Materials Research, Vols. 356-360, pp. 1323-1326, 2012