A study on the effect of introducing S-doped GO into the active layer on the performance of wire mesh Ti/Ce-Mn/SnO2-Sb-La electrodes

This study aims to investigate the influence of the introduction of S-doped GO in the active layer on the performance of wire mesh Ti/Ce-Mn/SnO2-Sb-La electrodes, Ti/Ce-Mn/SnO2-Sb-La electrodes, Ti/Ce-Mn/SnO2-Sb-La-rGO electrodes and Ti/Ce-Mn/SnO2-Sb-La-S-rGO electrodes, based on the wire mesh titanium. These were prepared and compared by sol-gel and thermal oxidation. Compared with the wire mesh Ti/Ce-Mn/SnO2-Sb-La electrode, the results of experiment indicated that the electrode prepared by introducing S-doped GO into the active layer has a higher electrochemical performance, and that the oxygen evolution potential increased from 1.78 V to 2.12 V. Within 120 min, the degradation efficiency of phenol increased from 75.2% to 89.5%, and the mechanism of the electrocatalytic degradation of phenol was revealed. At the same time, the removal rate of COD increased from 65.5% to 79.8%. During the degradation of phenol, the tank voltage remained stable at a minimum of 4.6 V. The accelerated life experiments revealed that the electrode prepared by introducing S-doped GO into the active layer had an accelerated life of 1.5 times, when compared to the electrode prepared without any introduction, up to 2.73 h. Therefore, the introduction of S-doped GO in the active layer can effectively improve the performance and service life of electrodes. •In this study, wire mesh titanium is selected as the substrate to prepare the electrodes.•S-doped GO is introduced into the active layer.•this study reveals the mechanism of electrocatalytic degradation of phenol.