▎ 摘　　要

Cu([H-4]salen) prepared from Cu([H-2]salen) was immobilised on graphene oxide (GO) to obtain Cu([H-4]salen)/GO. The presence of the complex on GO was verified by X-ray diffraction, Fourier transform infrared spectroscopy and Raman spectroscopy. Cu([H-4]salen)/GO exhibits better catalytic capacity as compared to Cu([H-2]salen), Cu([H-4]salen) and Cu([H-2]salen)/GO in the degradation of 3,5-dichlorobiphenyl. The reaction conditions were optimised based on the removal of 3,5-dichlorobiphenyl. Cu([H-4]salen)/GO also shows good performance in total carbon content conversion and ecotoxicity removal compared with other catalysts.