▎ 摘　　要

Pharmaceutically active compounds (PhACs) are ubiquitously detected in water matrices, arousing growing concern. Effective abatement of these toxic environmental contaminants is challenging but of great importance. Ce-based MOFs have been considered novel metal-organic framework (MOFs)-based photocatalysts in water treatment. However, limited light absorption ability, fast recombination of photogenerated carriers, and water stability limited the further application. Here, the UiO-66 (Ce) was successfully constructed onto the surface of a series of graphene oxide (GO) (1 mg -7.5 mg) in situ. GO with oxygen-containing functional groups (OCFGs) increased the adsorption (-45 %) of the trace amount of sulfamethoxazole (SMX) (200 mu g/L) over the interfaces and enhanced the degradation efficiency of SMX. The composite with the optimal ratio (GO@ UiO-66 (Ce)-5) significantly increased the charge separation ability and produced a large number of reactive oxygen species (ROS). center dot O2- was proved to be the major driving reactive substance for SMX degradation with the calculated steady-state concentration of 2.5 x 10-9 M (-1.37 times higher with bubbled oxygen), which is much higher than that of detected center dot OH (1.62 x 10-14). Major operational parameters including dissolved oxygen, initial solution pH, and catalyst dosages were investigated systematically. Several intermediates were identified by high-performance liquid chromatography coupled with triple quadrupole mass spectrometry (HPLC-MS/MS). By choosing the strategy, MOFs were closely bonded to the surface of the GO matrix, making the leakage of Ce ions inhibited obviously (-3 times) in the water treatment process. This study offers useful guidance for improving the performance of existing photocatalytic materials for PhACs removal.