Novel porous magnetic nanospheres functionalized by β-cyclodextrin polymer and its application in organic pollutants from aqueous solution

Desheng Liu; Zheng Huang; Minna Li; Ping Sun; Ting Yu; Lincheng Zhou

doi:10.1016/j.envpol.2019.04.079

Novel porous magnetic nanospheres functionalized by β-cyclodextrin polymer and its application in organic pollutants from aqueous solution

Environ Pollut. 2019 Jul:250:639-649. doi: 10.1016/j.envpol.2019.04.079. Epub 2019 Apr 21.

Authors

Desheng Liu¹, Zheng Huang², Minna Li³, Ping Sun⁴, Ting Yu⁵, Lincheng Zhou⁶

Affiliations

¹ State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou, 730000, PR China; College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China. Electronic address: liudsh17@lzu.edu.cn.
² State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou, 730000, PR China; College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China. Electronic address: huangzh15@lzu.edu.cn.
³ State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou, 730000, PR China; College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China. Electronic address: limn16@lzu.edu.cn.
⁴ State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou, 730000, PR China; College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China. Electronic address: sunp_14@lzu.edu.cn.
⁵ State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou, 730000, PR China; College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China. Electronic address: yut15@lzu.edu.cn.
⁶ State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou, 730000, PR China; Zhongwei High-tech Institute of Lanzhou University, 755000, PR China; College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China. Electronic address: zhoulc@lzu.edu.cn.

PMID: 31035146
DOI: 10.1016/j.envpol.2019.04.079

Abstract

Magnetic β-cyclodextrin (β-CD) porous polymer nanospheres (P-MCD) was fabricated by one-pot solvent thermal method using β-CD immobilized Fe₃O₄ magnetic nanoparticles with tetrafluoroterephthalonitrile as the monomer. Compared with the β-CD polymerization method reported in the literature,_ENREF_1 the synthetic route is effective and simple, thereby overcoming the harsh conditions that require nitrogen protection and always maintain anhydrous and oxygen-free. Moreover, the immobilization of β-CD on magnetic nanoparticles is combined with the cross-linking polymerization of the cross-linker, leading to a good synergistic effect on the removal of contaminants. Meanwhile, the dispersibility of the magnetic carrier enhances the dispersion of the β-CD porous polymer in the aqueous phase, and improves the inclusion adsorption performance and the adsorption process. P-MCD exhibited superior adsorption capacity and fast kinetics to MB. The maximum adsorption capacity of MB for P-MCD was 305.8 mg g ^-1, which is more than β-CD modified Fe₃O₄ magnetic nanoparticles (Fe₃O₄@β-CD). Moreover, the material had a short equilibrium time (5 min) for MB, high recovery and good recyclability (the adsorption efficiency was still above 86% after five repeated uses).

Keywords: Adsorption; Magnetic; Organic pollutants; Porous nanospheres; β-cyclodextrin polymer.

MeSH terms

Adsorption
Kinetics
Magnetics*
Nanospheres*
Polymers / chemistry
Porosity
Water Pollutants, Chemical / chemistry*
Water Purification / methods*
beta-Cyclodextrins / chemistry*

Substances

Polymers
Water Pollutants, Chemical
beta-Cyclodextrins