▎ 摘　　要

A novel ionic liquid modified graphene oxide supported Mo-complex [GO@IL/MoO2(acae)(2)] was successfully prepared, characterized and its catalytic application was investigated. The GO@IL/MoO2(acae)(2) catalyst was prepared through the surface modification of graphene oxide with alkyl imidazolium chloride followed by treatment with molybdenyl acetylacetonate. The GO@IL/MoO2(acae)(2) catalyst was characterized by using FT-IR, PXRD, TGA, EDX, and SEM analyses. This catalyst showed high activity in the green production of pyrazolo[b] phthalazine dione derivatives under ultrasonic conditions. The designed catalyst was effectively recovered and successfully reused at least eight times without significant loss in its efficiency.