Efficient uranium adsorbent with antimicrobial function constructed by grafting amidoxime groups on ZIF-90 via malononitrile intermediate

Douchao Mei; Lijia Liu; Huan Li; Yudan Wang; Fuqiu Ma; Chunhong Zhang; Hongxing Dong

doi:10.1016/j.jhazmat.2021.126872

Efficient uranium adsorbent with antimicrobial function constructed by grafting amidoxime groups on ZIF-90 via malononitrile intermediate

J Hazard Mater. 2022 Jan 15:422:126872. doi: 10.1016/j.jhazmat.2021.126872. Epub 2021 Aug 9.

Authors

Douchao Mei¹, Lijia Liu², Huan Li¹, Yudan Wang³, Fuqiu Ma⁴, Chunhong Zhang⁵, Hongxing Dong¹

Affiliations

¹ Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
² Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China; Yantai Research Institute and Graduate School of Harbin Engineering University, Yantai 264006, China. Electronic address: liulijia@hrbeu.edu.cn.
³ Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China. Electronic address: yudanwang@hrbeu.edu.cn.
⁴ Yantai Research Institute and Graduate School of Harbin Engineering University, Yantai 264006, China; College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, China. Electronic address: mafuqiu@hrbeu.edu.cn.
⁵ Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China; Yantai Research Institute and Graduate School of Harbin Engineering University, Yantai 264006, China.

PMID: 34399212
DOI: 10.1016/j.jhazmat.2021.126872

Abstract

Herein, a dual-function Zeolitic Imidazole Frameworks (ZIFs) ZIF-90 grafted with malononitrile by Knoevenagel reaction and following with an amidoximation reaction to form an efficient U (VI) adsorbent (ZIF-90-AO). The strong chelation power of amidoxime groups (AO) with uranium and ZIF-90's mesoporous structure afforded ZIF-90-AO high maximum uranium adsorption capacity of 468.3 mg/g (pH = 5). In addition, the factors affecting uranium adsorption process were investigated by a batch of adsorption tests under different adsorption conditions. ZIF-90-AO displayed good selectivity to UO₂²⁺ in the solution containing multiple co-existing ions and good regeneration property. More importantly, ZIF-90-AO showed excellent antimicrobial property against both E. coli and S. aureus. Therefore, ZIF-90-AO is a U-adsorbent with great application value for removing U (VI) from wastewater due to the high U (VI) adsorption capacity in weak acid condition and good anti-biofouling properties.

Keywords: Adsorption; Amidoxime; Antimicrobial; U (VI); Wastewater; ZIF.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adsorption
Anti-Bacterial Agents
Escherichia coli
Nitriles
Oximes
Staphylococcus aureus
Uranium* / analysis

Substances

Anti-Bacterial Agents
Nitriles
Oximes
amidoxime
Uranium
dicyanmethane