Fabrication And Electrocatalytic Performance Investigation Of Carbon Nanotube,Co,and Fe Doped Ti/SnO₂-Sb₂O₅ Eelctrode

Along with the increasing seriousness of water pollution problems,water pollution problems aroused people's more and more attention,To water pollution treatment is also gradually increased.Electric catalytic oxidation technology has received widely attention Because the advantages of efficient and pollution-free.Sol-gel method was applied for preparing Ti/SnO₂-Sb₂O₅ electrodes,and examines the influence of doping carbon nanotubes to the electrode performance,The influence of different carbon nanotubes?the amount of doped carbon nanotubes?different coating layers to electrode surface active layer by some test means such as scanning electron microscopy?SEM?,X-ray diffraction?XRD?,electrochemical measurements,accelerated life test,degradation of the performance test.It was determined that carbon nanotubes doped Ti/SnO2-Sb2O5 electrode performance is best when Diameter of 20 to 40 nm multi-walled carbon nanotubes doped,doping amount of 0.025 g/100 ml,coating layer is 20 layers.The preparation of electrode accelerated life slightly decreased under this condition,Decreased from 7.42 h to 6.17 h,The degradation of methylene blue and methyl orange to enhanced performance,increased from 67.28%and 69.21%to 96.28%and 92.54%.Getting lower electrode charge transfer resistance,only 0.9?,The volt-ampere capacity increased significantly.Different doping ratio of Co and Fe doped Ti/SnO₂-Sb₂O₅ electrode affect the perform-ance of the electrode.Confirmed the Co elements on the optimal doping ratio is 2%.When Co element doping ratio is 2%,the electrode accelerated life was significantly enhanced,increa-sed to 55.96 h,The degradation of methylene blue and methyl orange to be enhanced perfor-mance,increased from 67.28%and 69.21%to 82.53%and 90.61%,the electrode of charge transfer resistance is reduced,from 5.2?to1.1?.Fe element of the electrode has the best per formance when doping ratio is 3%,Electrode accelerated life best,increased to 11.63 h,Electrode of the charge transfer resistance is reduced,fell from 5.2?to 0.9?,The degrade-ation of methylene blue and methyl orange to be enhanced performance,increased to84.43%and 88.61%.Make Co element doped sol as an intermediary,make Co and carbon nanotubes co-doped sol as Ti/SnO2-Sb2O5 electrode surface active layer,and inspection electrode electrochemical performance.Electrode accelerated life get to 22.53 h,Mass transfer resist-ance of the electrode decreased significantly,only 1.3?.