Synthesis of phosphorylated hyper-cross-linked polymers and their efficient uranium adsorption in water

Yao Tian; Lijia Liu; Fuqiu Ma; Xiying Zhu; Hongxing Dong; Chunhong Zhang; Fangbo Zhao

doi:10.1016/j.jhazmat.2021.126538

Synthesis of phosphorylated hyper-cross-linked polymers and their efficient uranium adsorption in water

J Hazard Mater. 2021 Oct 5:419:126538. doi: 10.1016/j.jhazmat.2021.126538. Epub 2021 Jun 29.

Authors

Yao Tian¹, Lijia Liu², Fuqiu Ma³, Xiying Zhu¹, Hongxing Dong⁴, Chunhong Zhang⁵, Fangbo Zhao¹

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 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.
⁴ 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: dhongxing@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: 34323736
DOI: 10.1016/j.jhazmat.2021.126538

Abstract

Uranium (U) is hazardous and radioactive, wastewater containing U(VI) should be treated before being discharged. Here, two novel uranium adsorbents, phosphorylated hyper-cross-linked bisphenol A (PHCP-1) and fluorene-9-bisphenol (PHCP-2) were separately synthesized via Friedel-Crafts reaction followed by phosphorylation using phosphorus oxychloride. PHCPs had a BET surface area (up to 564 m²/g) with pore sizes of 2.2-2.8 nm. These adsorbents were used for the first time for uranium adsorption from water and demonstrated outstanding adsorption performance. PHCP-2 had a great uranium adsorption capacity (297.14 mg/g) and a very fast sorption rate (85% removal rate within 5 min). The adsorption data were well fitted with Freundlich isotherm and the pseudo-second-order kinetic model. PHCPs displayed selective adsorption capacity for U(VI) from solution that including a variety of competing metal ions. The reusability was confirmed through three regeneration cycles. Based on a series of spectroscopic analyses, the mechanism of action between PHCPs and U(VI) is primarily derived from the complex between phosphate functional groups and U (VI). The sorption performance of PHCPs is attributed to their huge specific surface area and the strong complex between phosphate groups and U(VI). These findings suggest that PHCPs could be useful in the effective adsorption of uranium from water.

Keywords: Adsorption; Hyper-cross-linked polymers; Phosphorylation; Uranium; Waste water.

Publication types

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

MeSH terms

Adsorption
Benzhydryl Compounds
Hydrogen-Ion Concentration
Kinetics
Phenols
Polymers
Uranium* / analysis
Water

Substances

Benzhydryl Compounds
Phenols
Polymers
fluorene-9-bisphenol
Water
Uranium