▎ 摘 要
In this study, magnetic iron oxide nanoparticles decorated graphene aerogel (Fe3O4/GA) with different Fe3O4:GO mass ratios of 0.5:1, 1:1, and 2:1, which were synthesized in the presence of ethylenediamine as a reducing agent. The suitable mass ratio of Fe3O4:GO was determined to be 1:1 for the preparation of Fe3O4/GA (FGA2). The FGA2 was characterized by vibrating sample magnetometer, contact angle and Fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, scanning electron microscope, Raman spectroscopy and Brunauer-Emmett-Teller specific surface area. The adsorption process of FGA2 for bisphenol A (BPA) was studied by single factor experiments including contact time, pH and initial SPA concentration. The adsorption data were followed the intraparticle diffusion and pccudo-second-order kinetic models. The maximum adsorption capability of FGA2 for BPA from Langmuir isotherm model was calculated to be 253.80 mg/g. The adsorption mechanism of FGA2 for BPA was mainly described by pi -pi interactions. Based on these results, the FGA2 could be concerned as an efficient adsorbent for the removal of BPA from water.