▎ 摘　　要

Advanced oxidation processes (AOPs) have gained extensive attentions in organic decon-tamination in past decades. Iron-contained compound is an interesting material due to its adsorp-tive and catalytic performance, which has been applied widely in AOPs. Thus, graphene oxide (GO)-Fe3S4 composite was synthesized by a solvothermal process and assessed as an effective adsorptive and catalytic dual functional material in this work. The composite displayed prominent adsorptive and heterogeneous Fenton-like catalytic performance, which was affected by prepara-tion condition and the reactive parameters in catalytic system. Under optimized reactive conditions, the GO-Fe3S4 composite yielded rapid degradation of vanillic acid, which the corresponding appar-ent rate constant was 1.81 x 10-1 min -1. Catalytic mechanism analysis revealed that the main oxy-gen species was hydroxyl radicals bounded on the surface of the composite. And the generation of center dot O2- was contributed to the conversion of H2O2 to center dot OH. The analysis of degradation intermediates of vanillic acid and p-hydroxybenzoic showed that these compounds could be mineralized to small molecules. The prominent enhanced heterogeneous Fenton-like catalytic performance of GO-Fe3S4 was due to a larger specific surface area, plenty of reductive active sites in the composite and a high mass transfer efficiency of oxidizing radicals in the reactive system.(c) 2022 The Author(s). Published by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).