Construction of hydroxyl-functionalized hyper-crosslinked networks from polyimide for highly efficient iodine adsorption

被引:18
作者
Wang, Jianjun [1 ,2 ]
Wu, Tingting [1 ]
Wang, Xianlong [1 ]
Chen, Jiaqi [1 ,2 ]
Fan, Minyi [2 ]
Shi, Zhichun [2 ]
Liu, Jiao [1 ]
Xu, Liang [3 ]
Zang, Yu [1 ]
机构
[1] Qiqihar Univ, Coll Mat Sci & Engn, Wenhua St 42, Qiqihar 161006, Heilongjiang, Peoples R China
[2] Qiqihar Univ, Technol Innovat Ctr Ind Hemp State Market Regulat, Coll Chem & Chem Engn, Wenhua St 42, Qiqihar 161006, Heilongjiang, Peoples R China
[3] Qiqihar Univ, Anal & Testing Ctr, Wenhua St 42, Qiqihar 161006, Heilongjiang, Peoples R China
基金
中国国家自然科学基金;
关键词
CONJUGATED MICROPOROUS POLYMERS; ONE-POT SYNTHESIS; HYPERCROSSLINKED POLYMERS; VOLATILE IODINE; CAPTURE;
D O I
10.1016/j.isci.2024.108993
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The rapid development of nuclear energy posed a great threat to the environment and human health. Herein, two hydroxyl-functionalized hyper-crosslinked polymers (PIHCP-1 and PIHCP-2) containing different electron active sites have been synthesized via Friedel-Crafts alkylation reaction of the polyimides. The resulting polymers showed a micro/mesoporous morphology and good thermal and chemical stability. Rely on the high porosity and multi -active sites, the PIHCPs show an ultrahigh iodine uptake capacity reached 6.73 g g-1 and the iodine removal efficiency from aqueous solution also reaches 99.7%. Kinetic analysis demonstrates that the iodine adsorption on PIHCPs was happened on the heterogeneous surfaces in the form of multilayer chemisorption. Electrostatic potential (ESP) calculation proves the great contribution of hydroxyl groups on the iodine capture performance. In addition, the iodine capture efficiency of both adsorbents can be maintained over 91% after four cyclic experiments which ensures their good recyclability for further practical applications.
引用
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页数:17
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