首页| Fabrication of calcium/cupric crosslinked alginate electrospun nanofibers for enhancing fluoroquinolones adsorption
Fabrication of calcium/cupric crosslinked alginate electrospun nanofibers for enhancing fluoroquinolones adsorption
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Fluoroquinolones (FQs) in the environment have posed a threat to the ecosystem and human health. The development of efficient and economical materials for the removal of FQs provides an alternative answer to the issue. Herein, calcium and cupric crosslinked alginate nanofibers (SA-Ca/Cu) were prepared by fabrication of electrospun SA nanofibers, followed by crosslinking with CaCl2 and CuCl2. The introduction of Ca~(2+) and Cu~(2+) to crosslink the SA nanofibers not only endows the SA-Ca/Cu nanofibers with water resistance but also provides abundant binding sites to interact with FQs. The SA-Ca/Cu nanofibers are a mesoporous material with the Brunauer-Emmett-Teller surface area of 23.7 m~2 g~(-1), and a pore diameter of 25.5 run. The adsorption isotherms data of SA-Ca/Cu toward FQs were well fitted to the Langmuir model and the kinetics were well described by the general-order model. The maximum adsorption capacities of SA-Ca/Cu toward sparfloxacin, ciprofloxacin, and enrofloxacin were calculated to be 285.0, 338.1, and 375.0 mg g~(-1), respectively. In addition, the adsorption thermodynamics was investigated to help understand the adsorption process. Furthermore, the excellent removal efficiency of the SA-based nanofibers toward FQs from mineral and river water samples, as well as the simulated effluents demonstrates that the natural biomaterial-based mesoporous materials are effective, economical, and potential adsorbents for treating real effluents containing FQs.
Ministry of Education Key Laboratory of Laser Life Science & Guangdong Provincial Key Laboratory of Laser Life Science & Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, South China Normal University, Guangzhou, 510631, China
NSTL
