▎ 摘 要
In this study, a one-step hydrothermal method synthesized ?-cyclodextrin-immobilized reduced graphene oxide composite (?-CD/rGO) was employed to remove naproxen from aquatic environments. The ?-CD/rGO had a porous structure with abundant hydroxyl groups, and acetalization between the ?-CD and rGO provided a more stable three-dimensional structure. The maximum equilibrium adsorption capacity of naproxen on ?-CD/rGO at 313 K was 361.85 mg g-1. The adsorption of naproxen onto the ?-CD/rGO fit well with the pseudo-second-order kinetics and the Langmuir adsorption model. The ?H was higher than 40 kJ mol-1, which indicated that this adsorption was chemisorptive and endothermic. Host-guest interaction, hydrogen bonding, and ?-? interactions were uncovered as three main mechanisms involved in binding between naproxen and the ?-CD/rGO. Moreover, used ?-CD/rGO could be regenerated with ethanol, making this an attractive method for naproxen adsorption in aquatic environments.