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RESEARCH ARTICLE

Fabrication of magnetic functionalised calix[4]arene composite for highly efficient and selective adsorption towards uranium(VI)

Fang-Zhu Xiao A F H , Cheng Wang B H , Li-Mei Yu C , Yi-Qiu Pu D , Yu-Li Xu B , Kang Zhang E , Jia-Qi Luo B , Qi-Qi Zhu A , Fang Chen E , Yong Liu E F , Chun-Hsing Ho G , Guo-Wen Peng https://orcid.org/0000-0001-8094-8317 B E F I and Shu-Ya He A I
+ Author Affiliations
- Author Affiliations

A School of Public Health, University of South China, Hengyang 421001, China.

B School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.

C School of Chemical Biology and Environmental Engineering, Xiangnan University, Chenzhou 423000, China.

D Plant Protection Station, Zhengan Agricultural and Pastoral Bureau, Zunyi 563400, China.

E School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, China.

F Hunan Province Engineering Technology Research Center of Uranium Tailings Treatment, University of South China, Hengyang 421001, China.

G Department of Civil Engineering, Construction Management, and Environmental Engineering, Northern Arizona University, 2112 S Huffer Ln, PO Box 15600, Flagstaff, AZ 86011, USA.

H These authors contributed equally to this work.

I Corresponding authors. Email: pgwnh78@163.com; heshuya8502@163.com

Environmental Chemistry 16(8) 577-586 https://doi.org/10.1071/EN19014
Submitted: 16 January 2019  Accepted: 14 May 2019   Published: 31 May 2019

Environmental context. Uranium-containing wastewaters have high potential to harm the environment and human health. We found that the combination of calix[4]arene with magnetic Fe3O4 particles produced good adsorption of uranium from wastewater. In addition, this material can be recycled and reused, so it has good prospects in practical applications for uranium remediation.

Abstract. A magnetic functionalised calix[4]arene composite consisting of Fe3O4 and calix[4]arene phosphonate derivative (CPD) was prepared through a facile self-assembly method. The composite was characterised by scanning electron microscopy (SEM), powder X-ray diffraction (PXRD) and Fourier transform infrared spectroscopy (FTIR). The as-synthesised Fe3O4/CPD composite was used to remove UVI from aqueous solutions under different conditions. Meanwhile, the adsorption isotherm, kinetics and thermodynamics were fitted and analysed. The results show that the Fe3O4/CPD composite may be a promising adsorption material for the separation and enrichment of UVI from aqueous solutions in the cleanup of environmental pollution.

Additional keywords: calixarene, Fe3O4, magnetic materials, separation.


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