Removal of simulated radioactive cerium (III) based on innovative magnetic trioctylamine-polystyrene composite microspheres

被引：22

作者：

Han, Qiuyue ^{[1
]}

Du, Meiling ^{[1
]}

Guan, Yueping ^{[1
]}

Luo, Guangyao ^{[1
]}

Zhang, Zhi ^{[1
]}

Li, Tao ^{[1
]}

Ji, Yanqin ^{[2
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

[2] Chinese Ctr Dis Control & Prevent, Natl Inst Radiol Protect, China CDC Key Lab Radiol Protect & Nucl Emergency, Beijing 100088, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2020年 / 741卷

关键词：

Magnetic adsorbent; Separation; Trioctylamine; Radioactive element; AQUEOUS-SOLUTION; METAL SULFIDE; ADSORPTION; SR2+; U(VI);

D O I：

10.1016/j.cplett.2020.137092

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel magnetic polystyrene (PS) trioctylamine (TOA) microsphere (Fe3O4/PS/TOA) adsorbent was synthesized by permeation and swelling on porous polystyrene microsphere matrix with a crosslinking degree of 0.5% and applied for removal of simulated radioactive element Ce3+. The morphology, composition and magnetic properties were characterized by SEM, FTIR, TG and VSM. The saturation magnetization of the microspheres enhanced significantly with the increase of the times of penetration-deposition, reached to saturation point of 21.72 emu/g. In addition, the adsorption kinetics showed that the adsorption capacity was 39.7 mg/g, isothermal studies indicated that the equilibrium isotherm was more suitable for the Langmuir model.

引用

页数：7

共 26 条

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