The application relates to a high-activity
electrode and a preparation method thereof and application of the
electrode in
sewage treatment. The preparation method is as follows: Sn source, Sb source and Tb source are configured into a
mixed solution, the Tb-Sn-Sb
sol is obtained after ultrasonic treatment and standing and aging, the Tb-Sn-Sb
sol is uniformly coated on the surface of an
electrode substrate, and the high-activity
titanium-based
tin dioxide-
antimony electrode is prepared through heat treatment at a specific temperature. The application finds that, for the first time, the
rare earth element Tb is doped in the Ti / SnO2-Sb electrode, the
conductivity of the Ti / SnO2-Sb electrode can be greatly improved, and the treatment capacity of the Ti / SnO2-Sb electrode for
wastewater containing organic pollutants can be greatly improved. The removal rate of the Ti / SnO2-Sb-Tb electrode for
moxifloxacin reaches more than 84%, while the removal rate of the conventional Ti / SnO2-Sb electrode for
moxifloxacin is only 58.4%, and the removal rate of the Ti / SnO2-Sb-Ho electrode doped with other
rare earth elements for
moxifloxacin is 74.1%, which further shows that the
doping of the
rare earth element Tb in the Ti / SnO2-Sb electrode can greatly improve the treatment capacity of the electrode for
wastewater containing organic pollutants.