Preparation of nanosheet-based spherical Ti/SnO2-Sb electrode by in-situ hydrothermal method and its performance in the degradation of methylene blue

Electrocatalytic oxidation technology and dimensionally stable anodes are widely used in the field of organic dye wastewater treatment . Rational manipulation of microscopic morphology, surface chemistry, and electrode configuration on DSA is of prime importance to enhance its electrochemical performance in the electrocatalytic degradation of organic pollutants . Herein, a novel Ti/SnO 2 -Sb anode with a microsphere structure composed of nanosheet was prepared by the in-situ hydrothermal method . And this electrode was compared with a control sample prepared by the traditional thermal decomposition method in terms of microscopic morphology, chemical structure , and electrochemical performance in the degradation of methylene blue. Benefiting from the nanosheet structure, small grain size, and higher Sb 2 O 5 content, the electrode prepared by the hydrothermal method had a higher Oxygen Evolution Potential (2.09V), a smaller impedance (8.61Ω), and a larger Electrochemical Active Surface Area. And its removal rate of methylene blue reached 100% while the total organic carbon content reduced by 39.20% within 60 min, which is significantly superior to that of traditional thermal decomposition electrodes. This study highlights that the electrode prepared by single-step hydrothermal process shows more excellent catalytic performance than that by the traditional thermal decomposition process and the hydrothermal method has bright application prospects in DSA for electrocatalytic oxidation.