Construction of magnetic bifunctional β-cyclodextrin nanocomposites for adsorption and degradation of persistent organic pollutants

Desheng Liu; Zheng Huang; Minna Li; Xiaochun Li; Ping Sun; Lincheng Zhou

doi:10.1016/j.carbpol.2019.115564

Construction of magnetic bifunctional β-cyclodextrin nanocomposites for adsorption and degradation of persistent organic pollutants

Carbohydr Polym. 2020 Feb 15:230:115564. doi: 10.1016/j.carbpol.2019.115564. Epub 2019 Nov 6.

Authors

Desheng Liu¹, Zheng Huang², Minna Li³, Xiaochun Li⁴, Ping Sun⁵, Lincheng Zhou⁶

Affiliations

¹ State Key Laboratory of Applied Organic Chemistry, 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, 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, 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, Lanzhou University, Lanzhou 730000, PR China. Electronic address: lixch18@lzu.edu.cn.
⁵ State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China. Electronic address: sunp-14@lzu.edu.cn.
⁶ State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China; Zhongwei High-tech Institute of Lanzhou University, 755000, PR China. Electronic address: zhoulc@lzu.edu.cn.

PMID: 31887953
DOI: 10.1016/j.carbpol.2019.115564

Abstract

Herein, we report a novel magnetic bifunctional β-cyclodextrin nanocomposite (Fe₃O₄@β-CD-CDI) based on metal coordination, which may be used for adsorption and degradation of persistent organic pollutants in aqueous solution. More importantly, N,N'-carbonyldiimidazole (CDI) functionalized β-CD ligand (β-CD-CDI) was assembled on the surface of Fe₃O₄ by Zn-N interaction. The results of kinetic and isothermal adsorption model investigation indicated that the adsorption rate and capacity of Fe₃O₄@β-CD-CDI were better than other materials, suggesting the effective accessibility of adsorption sites. We further confirmed that Fe₃O₄@β-CD-CDI can be used as heterogeneous catalyst to remove BPA through Fenton-like reaction in the presence of hydrogen peroxide (H₂O₂). Moreover, the material effectively alleviated the secondary pollution owing to the existence of β-CD inner cavity. This study indicated that the magnetic Fe₃O₄@β-CD-CDI material has great potential applications in wastewater purification containing persistent organic pollutants.

Keywords: Adsorption and degradation; Magnetic; Metal coordination; Persistent organic pollutants; β-cyclodextrins nanocomposite.

MeSH terms

Adsorption / drug effects
Hydrogen Peroxide / chemistry
Magnetic Phenomena
Magnetics
Nanocomposites / chemistry*
Organic Chemicals / chemistry*
Organic Chemicals / toxicity
Wastewater / toxicity
Water Pollutants, Chemical / chemistry
Water Pollutants, Chemical / toxicity*
beta-Cyclodextrins / chemistry*

Substances

Organic Chemicals
Waste Water
Water Pollutants, Chemical
beta-Cyclodextrins
Hydrogen Peroxide
betadex