A novel Pb/PbO2 electrodes prepared by the method of thermal oxidation-electrochemical oxidation: Characteristic and electrocatalytic oxidation performance

The PbO2 electrodes were preservative and chemically stable but had the problem of poor electrocatalytic oxidation activity instability. In this research, Pb/PbO2 with good stability prepared via a novel combined method thermal electrochemical oxidation, which was different form electrodeposition coating method. Combined results analyzed by SEM, metallographic microscope, XRD, steady-state polarization CV tests, performance evaluated generation capacity ·OH removal efficiency Congo red (CR). experimental put in evidence that time affected electrode refinement crystal sizes strengthening crystallinity promoted oxygen evolution potential ability. better ability 6-PbO2 encouraged CR (68.62%, 0.177 min?1) whose chromophore ring structure aromatic hydrocarbons destroyed (7.82 × 10?4 ?M initial concentration 20 mg·L-1 at 8 mA·cm-2 for min. Moreover, owned its compact surface. It showed oxidation-electrochemical excellent application potential, worthy further research.