阴极脱氯协同BDD电极阳极电催化氧化对氯苯酚研究

his paper focuses on the synergistic effect of cathode dechlorinationthe on electrochemical oxidation of p-chlorophenol on BDD electrode. Electrochemical degradation of p-chlorophenol was conducted in single and double compartment electrolytic cell and the results show that the mineralization is mainly conducted in the anode region. The product of chloride ions produced from the cathodic reduction of 4-chlorophenol in the single cell migrated to the anode region and further generated active chlorine towards electro-catalytic oxidation. At the same time, chloride ion produced from the cathode of the double cell was difficult to migrate to the anode region, which leaded to better degradation efficiency in the single compartment electrolytic cell. Combining with high performance liquid chromatography, the intermediate products of anode region, including benzoquinone, catechol, phenol, were determined, while the major product of cathode region was phenol. The degradation pathway of p-chlorophenol on BDD electrode was proposed based on the intermediate products above.