▎ 摘　　要

NOVELTY - Self-assembly method of graphene oxide on non-planar substrate surface involves carrying out self-assembly process of graphene oxide at ultrasonic power of more than 150 W, on non-planar substrate including silica microspheres having particle size of 200-500 nm. USE - Self-assembly method of graphene oxide on non-planar substrate surface in formation of graphene-based composite material used as catalyst for reducing 4-nitrobenzene. ADVANTAGE - The method efficiently provides composite microspheres having excellent water dispersibility and catalytic activity.