▎ 摘　　要

NOVELTY - Preparing manganese dioxide-chitosan-graphite oxide gel complex catalyst comprises (i) adding graphite oxide, α-manganese dioxide nanowires, and chitosan into water, mixing and ultrasonically dispersing to form a complex dispersion, and (ii) adding glutaraldehyde to the complex dispersion for carrying out the mixed reaction, and finishing the reaction to obtain a manganese dioxide-chitosan-graphite oxide gel complex catalyst. USE - The method is useful for preparing manganese dioxide-chitosan-graphite oxide gel complex catalyst, which is useful for treating organic wastewater (claimed). ADVANTAGE - The method: does not use a reducing agent; and completely preserves the structure and multifunctionality of graphene oxide; combines the flexible polymer chain of chitosan and the surface rich in amino groups; and improves the cycle times and adsorption capacity of the catalyst. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for the manganese dioxide-chitosan-graphite oxide gel complex catalyst prepared by above mentioned method.