▎ 摘　　要

NOVELTY - Method for preparing chemical oxygen demand degradation catalyst for organic wastewater involves (a) dissolving ferric chloride hexahydrate and sodium acetate in the solvent, mixing evenly, adding to the hydrothermal kettle, stirring and reacting for 5-10 hours to obtain iron oxide nanoparticles, (b) adding tetrabutyl titanate to absolute ethanol, adding iron oxide nanoparticles and surfactant, and stirring for 2-5 hours to obtain a mixed solution, (c) adding the mixed solution to the PTFE liner of the reactor, and sealing the reaction at 160-180 degrees C for 8-12 hours to obtain a titanium dioxide/ferrous oxide composite, (d) preparing reduced graphene oxide by ultrasonic-assisted Hummer method, ultrasonically dispersing, adding titanium dioxide/ferrous oxide composite, cooling to room temperature, centrifuging, washing and drying, and (e) drying the material, roasting and keeping warm, and cooling to room temperature to obtain the product. USE - The method is used for preparing chemical oxygen demand degradation catalyst, which is used for treating organic wastewater (claimed). ADVANTAGE - The chemical oxygen demand degradation catalyst has a high degradation rate for various organic substances in water and excellent degradation effect, and is suitable for industrial wastewater treatment. DETAILED DESCRIPTION - Method for preparing chemical oxygen demand degradation catalyst for organic wastewater involves (a) dissolving ferric chloride hexahydrate and sodium acetate in the solvent, mixing evenly, adding to the hydrothermal kettle, stirring and reacting for 5-10 hours to obtain iron oxide nanoparticles, (b) adding tetrabutyl titanate to absolute ethanol, adding iron oxide nanoparticles and surfactant, and stirring for 2-5 hours to obtain a mixed solution, (c) adding the mixed solution to the PTFE liner of the reactor, and sealing the reaction at 160-180 degrees C for 8-12 hours to obtain a titanium dioxide/ferrous oxide composite, (d) preparing reduced graphene oxide by ultrasonic-assisted Hummer method, ultrasonically dispersing, adding titanium dioxide/ferrous oxide composite, and stirring for 2-5 hours, transferring the dispersion to the reaction kettle, increasing the temperature, after 8-12 hours of reaction, cooling to room temperature, centrifuging, washing and drying, and (e) drying the material, roasting and keeping warm, and cooling to room temperature to obtain the product.