Effective and rapid adsorption of uranium via synergy of complexation and cation-π interaction

被引：13
|
作者：
Wang, Yan [1 ]
Liu, Xiaolin [1 ]
Xie, Yingrong [1 ]
Chen, Bowei [1 ]
Zhang, Yong [2 ,3 ,4 ]
机构：
[1] Mianyang Teachers Coll, Sch Math & Phys, Mianyang 621000, Sichuan, Peoples R China
[2] Southwest Univ Sci & Technol, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Sichuan, Peoples R China
[3] Southwest Univ Sci & Technol, Sch Natl Def Sci, Mianyang 621010, Sichuan, Peoples R China
[4] Southwest Univ Sci & Technol, Sch Mat Sci & Engn, Mianyang 621010, Sichuan, Peoples R China
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2022年 / 331卷 / 02期
关键词：
Uranium; Adsorption; Synergistic effect; Complexation; Cation-pi interaction; EFFICIENT REMOVAL; DIPOLE-PI; U(VI); WATER; EXTRACTION; SEAWATER; AEROGEL; EQUILIBRIUM; COMPOSITE; RECOVERY;
D O I：
10.1007/s10967-021-08179-9
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A novel indole-based aerogel (HTPRA) containing carboxyl groups was prepared for separation of uranium from aqueous solution. The adsorption was rapid, strongly dependent on pH, attaining a plateau at pH 4-7.5 and independent of ionic strength. The maximum adsorption capacity of HTPRA for uranium was evaluated to be 899.9 mg g(-1). HTPRA exhibited satisfactory performance in actual water samples. Furthermore, the resulting HTPRA could be recovered at least five times without marked deterioration in uptake capacity. The synergistic effect of complexation and cation-pi interaction between HTPRA and uranium was responsible for the unexpected adsorption capacity of uranium.
引用
收藏
页码：1115 / 1126
页数：12
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