Preparation of nanometer PbO_(2/)CeO_2 electrode and electrocatalytic degradation of phenol

摘要

Prepare lead alkoxide complex in ethylene glycol solution with electrochemical method. Add cereus nitrate into electrolyte, hydrolyze and dehydrate it. And then roast it for 2h in 500'C, Nanoscale PbO2/CeO_2 powder can be formed finally. Nanoscale PbO/CeO_2 powder will be characterized by infrared spectroscopy (FT-IR), thermogravimetry-differential thermal analysis (TG-DTA), x-ray diffraction (XRD) and scanning electron microscope (SEM). The experiment shows that particle dispersion of nanoscale PbO2/CeO_2 powder formed in the organic solution is ideal with particle size 100-150nm. Study redox behaviors of nanoscale PbO_2/CeO_2 electrodes in 0.15mol/LHCl+0.1mol/L C6H5OH solution with the method of cyclic voltammetry. The results show that oxidation peak current of nanometer PbO_2 mingled with CeO_2 electrode reaches 107.5mA/cm2 and removal rate of photocatalytic degradation of phenol can reach 91.7%, which show that electrode is of excellent electrocatalytic activity.