Decorating UiO-66-NH2 crystals on recyclable fiber bearing polyamine and amidoxime bifunctional groups via cross-linking method with good stability for highly efficient capture of U(VI) from aqueous solution

Gang Zhang; Haiman Fan; Ru-Yi Zhou; Weiyan Yin; Ruobing Wang; Ming Yang; Zhiyong Xue; Yongsheng Yang; Jun-Xia Yu

doi:10.1016/j.jhazmat.2021.127273

Decorating UiO-66-NH₂ crystals on recyclable fiber bearing polyamine and amidoxime bifunctional groups via cross-linking method with good stability for highly efficient capture of U(VI) from aqueous solution

J Hazard Mater. 2022 Feb 15;424(Pt A):127273. doi: 10.1016/j.jhazmat.2021.127273. Epub 2021 Sep 20.

Authors

Gang Zhang¹, Haiman Fan², Ru-Yi Zhou³, Weiyan Yin⁴, Ruobing Wang¹, Ming Yang¹, Zhiyong Xue¹, Yongsheng Yang⁵, Jun-Xia Yu⁶

Affiliations

¹ Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing, School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430073, China.
² Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing, School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430073, China; ShenZhen SaiJiaoYang Energy & Science Technology Co., Ltd, Shenzhen 518116, China.
³ Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing, School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430073, China; Hubei key Laboratory of Novel Reactor & Green Chemical Technology, National Engineering Research Center of Phosphorus Resource Exploitation, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, China.
⁴ Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing, School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430073, China. Electronic address: hpywy2006@163.com.
⁵ Department of Applied Chemistry, School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430073, China. Electronic address: ysyang@wtu.edu.cn.
⁶ Hubei key Laboratory of Novel Reactor & Green Chemical Technology, National Engineering Research Center of Phosphorus Resource Exploitation, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, China. Electronic address: yujunxia_1979@163.com.

PMID: 34600391
DOI: 10.1016/j.jhazmat.2021.127273

Abstract

Although polyacrylonitrile fiber (PANF) and metal-organic frameworks (MOFs) have been extensively investigated to remove U(VI) from water, their practical applications are seriously hindered by the relatively low stability of PANF in acidic solution and great difficulty of separating MOFs nanoparticles from solution, beside that, little attention is paid to the fabrication of MOFs and PANF composite materials (MPCMs) with excellent adsorption capacity for U(VI). Herein, we report the synthesis of novel MPCMs by decorating different concentrations of UiO-66-NH2 crystals onto polyamine and amidoxime groups functionalized PANF (PA-AO-PANF) through cross-linking method for U(VI) extraction. The characterization results reveal that the combination of PA-AO-PANF and UiO-66-NH2 crystals endows MPCMs with excellent separation ability, large surface area, good stability and plentiful surface functional groups, which contributes to good selectivity and enhanced adsorption performance. Consequently, the obtained UN-PA-AO-PANF-2 shows the maximum uptake capacity of 441.8 mg/g and equilibrium uptake time of 30 min towards U(VI). Besides, the U(VI) uptake ability and structure of UN-PA-AO-PANF-2 are well preserved after ten adsorption-desorption cycles. With these outstanding properties, the adsorbent has great potential for the capture of U(VI) from aqueous solutions. Importantly, this work provides a cost-effective and efficient way to construct extremely stable MPCMs hybrid fibers.

Keywords: Adsorption; Polyacrylonitrile fiber; Polyamine and amidoxime; U(VI) ion; UiO-66-NH(2).