▎ 摘　　要

NOVELTY - A copper ferrite/graphene quantum point composite comprises copper ferrite /GQDs at mass ratio of 1: 99-10: 90, where the 50-100 nm GQDs nanoparticles are covered the surface of the hook copper ferrite particle, the particle diameter is spherical. USE - Copper ferrite/graphene quantum point composite for colorimetric detection of organophosphorus pesticides. ADVANTAGE - The magnetic nanocomposites in the composite can be recycled easily separated by physical methods, in line with the concept of green chemistry. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a copper ferrite/graphene quantum point composite preparing method.