• 文献标题:   Enhanced adsorption of naproxen from aquatic environments by ?-cyclodextrin-immobilized reduced graphene oxide
  • 文献类型:   Article
  • 作  者:   FENG XL, QIU B, DANG Y, SUN DZ
  • 作者关键词:   cyclodextrin, reduced graphene oxide, naproxen adsorption
  • 出版物名称:   CHEMICAL ENGINEERING JOURNAL
  • ISSN:   1385-8947 EI 1873-3212
  • 通讯作者地址:  
  • 被引频次:   36
  • DOI:   10.1016/j.cej.2021.128710 EA FEB 2021
  • 出版年:   2021

▎ 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.