▎ 摘　　要

In this study, we reported the synthesis of graphene oxide aerogel (GOA) through ice segregation induced self-assembly of GO sheets. The formation mechanism of GOA was studied via Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, Energy-dispersive X-ray spectroscopy, and Brunauer-Emmett-Teller surface area. The GOA with GO concentration of 10 mg/mL was applied as an adsorbent to remove heavy metal ions (Cd2+, Ni2+). The adsorption processes of GOA for Cd2+, Ni2+ fitted well with pseudo-second-order kinetics and Langmuir isotherm models. The maximum adsorption capacities for Cd2+ and Ni2+ were determined to be 108.70 and 91.74 mg/g, respectively. Moreover, the electrostatic attraction was found to be the main interaction between GOA and Cd2+, Ni2+. The adsorption of phenolic compounds (phenol and bisphenol A) was studied to expand the adsorption applications of GOA. In addition, The maximum adsorption capacities for phenol and bisphenol A were determined to be 129.37 and 64.76 mg/g, respectively. Therefore, GOA has the potential to be used as a highly efficient adsorbent for the treatment of heavy metal ions and phenolic compounds from water.