Iron/oxygen-doped carbon-based filtering type electro-Fenton cathode and preparation method and application thereof

The invention relates to an iron/oxygen-doped carbon-based filtering type electro-Fenton cathode and a preparation method and application thereof.The preparation method comprises the steps that an iron-oxygen-carbon monatomic catalyst is synthesized through a step-by-step calcination method, activated carbon fibers are coated with the obtained catalyst in a dropwise mode, and the iron/oxygen-doped carbon-based filtering type electro-Fenton cathode is obtained; therefore, the high-performance iron/oxygen-doped carbon-based filtering type electro-Fenton cathode which is high in hydrogen peroxide yield and capable of rapidly transferring mass is formed. Hydrogen peroxide is efficiently generated in situ on the iron/oxygen-doped carbon-based filtering type electro-Fenton cathode, hydroxyl radicals are generated in situ under the catalytic action of monatomic iron sites, the yield of hydrogen peroxide is greatly improved, refractory organic pollutants enriched on the surface of the cathode are efficiently catalyze