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A terylene membrane which kept pH＞12 in cathode compartment was used to construct a divided cell with a carbon/polytetrafluoroethylene (C/PTFE) O2-fed cathode. The concentrations μmol/L, respectively, which were determined by permanganate titration, electron spin resonance (ESR) spectrum and the fluorescence spectra. The efficiency of the removal of phenol achieved 100% as a result of these two kinds of stronger oxidizer.