A strategy of synergistically using ether oxygen and phenolic hydroxyl groups for Ultra-High selective and fast Cs+ isolation

被引：9

作者：

Xu, Zihao ^{[1
,2
]}

Rong, Meng ^{[1
,2
]}

Ni, Shan ^{[1
,2
]}

Meng, Qiyu ^{[1
,2
]}

Chen, Liyan ^{[1
,2
]}

Liu, Huizhou ^{[1
,2
]}

Yang, Liangrong ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2022年 / 284卷

基金：

国家重点研发计划; 中国博士后科学基金; 中国国家自然科学基金;

关键词：

Synergistic effect; Phenolic hydroxyl and ether oxygen groups; High selectivity; Cesium isolation; Salt lake brine; ION-EXCHANGE; AMMONIUM MOLYBDOPHOSPHATE; SOLVENT-EXTRACTION; MICROPOROUS POLYMERS; AQUEOUS-SOLUTIONS; CESIUM; REMOVAL; ADSORPTION; WASTE; ADSORBENT;

D O I：

10.1016/j.seppur.2021.120285

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Hypercrosslinked polymers (HCPs) with synergistic effect of ether oxygen and phenolic hydroxyl groups was designed and fabricated for Cs+ isolation in the salt lake system. The separation factors (S.F.)(Cs+/K+) of the adsorbents were significantly increased through regulating the content of the ether oxygen group in the frameworks. The S.F. of PO-HCPs-6 was increased by nearly 5 times to an ultra-high value (S.F. = 57) compared with the Cs+ adsorbents reported in the literature. Moreover, the mild and sufficient polymerization process endowed PO-HCPs-6 with an extremely fast kinetic adsorption rate. PO-HCPs-6 could quickly reach 90% of the equilibrium adsorption capacity in just 1 min. Finally, after 5 times adsorption-desorption experiments, the remarkable elution rate (> 92%) and reusability adsorption capacity (> 91%) of PO-HCPs-6 proved it has inspiring application potential for the Cs+ isolation in the salt lake brine system.

引用

页数：11