▎ 摘　　要

Amino-functionalized iron terephthalate metal-organic framework (NH2-MIL-88B) has been studied for its adsorption and catalytic properties due to its high surface area and unique topological architecture. Functionality of the material can be improved through surface modification to increase active sites for the targeted applications. In this study, graphene oxide (GO) was incorporated to the NH2-MIL-88B material to obtain composite with improved adsorption and catalytic properties. The results showed that GO/NH2-MIL-88B in dark (as GO/NH2-MIL-88B/Dark system) was capable to adsorb 28.1% of methylene blue (MB) in water, which is about twice the adsorption of MB by the NH2-MIL-88B material in dark (as NH2-MIL-88B/Dark system). Furthermore, with the presence of hydrogen peroxide (H2O2), the GO/NH2-MIL-88B composite in dark condition (as GO/NH2-MIL-88B/H2O2/Dark) and the GO/NH2-MIL-88B composite under ultraviolet-A (UV-A) irradiation (as GO/NH2-MIL-88B/H2O2/UV-A) have shown promising Fenton-like behavior, which have removed 72.2% and 92.3% of MB in water, respectively. The removal of MB was well fitted to the Langmuir-Hinshelwood pseudo-first order kinetics model with the reaction rate constant, k(1) = 0.0221 min(-1) and k(1) = 0.0426 min(-1) for GO/NH2-MIL-88B/H2O2/Dark and GO/NH2-MIL-88B/H2O2/UV-A system, respectively. This study implies that the GO/NH2-MIL-88B composite can be a good catalyst for the heterogeneous Fenton-like degradation of cationic pollutants in water.