▎ 摘　　要

NOVELTY - Graphene-based composite catalyst, is claimed. The preparation of graphene-based composite catalyst comprises (a) uniformly dispersing graphene powder in titanium sulfate aqueous solution; (ii) dropwise adding 85 wt.% ethylenediamine into the above system, and adjusting the pH of the system to 7-8; (iii) stirring at room temperature for 1-5 hours, suction filtering the dispersion system, washing many times, and drying the precipitate at 90-100 degrees C; and (iv) calcining the dried powder at 300 degrees C for 2 hours under the protection of nitrogen gas. USE - The graphene-based composite catalyst is useful for degrading organic pollutants in water (claimed). ADVANTAGE - The catalyst has high structural stability, is easy to recover, and has good catalytic activity.