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Li C, Yan Q, Xu H, Luo S, Hu H, Wang S, Su X, Xiao S, Gao Y. Highly Efficient Capture of Volatile Iodine by Conjugated Microporous Polymers Constructed Using Planar 3- and 4-Connected Organic Monomers. Molecules 2024; 29:2242. [PMID: 38792104 PMCID: PMC11124010 DOI: 10.3390/molecules29102242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 05/02/2024] [Accepted: 05/05/2024] [Indexed: 05/26/2024] Open
Abstract
The effective capture and recovery of radioiodine species associated with nuclear fuel reprocessing is of significant importance in nuclear power plants. Porous materials have been proven to be one of the most effective adsorbents for the capture of radioiodine. In this work, we design and synthesize a series of conjugated microporous polymers (CMPs), namely, TPDA-TFPB CMP, TPDA-TATBA CMP, and TPDA-TECHO CMP, which are constructed based on a planar rectangular 4-connected organic monomer and three triangular 3-connected organic monomers, respectively. The resultant CMPs are characterized using various characterization techniques and used as effective adsorbents for iodine capture. Our experiments indicated that the CMPs exhibit excellent iodine adsorption capacities as high as 6.48, 6.25, and 6.37 g g-1 at 348 K and ambient pressure. The adsorption mechanism was further investigated and the strong chemical adsorption between the iodine and the imine/tertiary ammonia of the CMPs, 3D network structure with accessible hierarchical pores, uniform micromorphology, wide π-conjugated structure, and high-density Lewis-base sites synergistically contribute to their excellent iodine adsorption performance. Moreover, the CMPs demonstrated good recyclability. This work provides guidance for the construction of novel iodine adsorbent materials with high efficiency in the nuclear power field.
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Affiliation(s)
- Chaohui Li
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan University, No 58, Renmin Avenue, Haikou 570228, China; (C.L.); (Q.Y.); (S.L.); (X.S.); (Y.G.)
| | - Qianqian Yan
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan University, No 58, Renmin Avenue, Haikou 570228, China; (C.L.); (Q.Y.); (S.L.); (X.S.); (Y.G.)
| | - Huanjun Xu
- School of Science, Qiongtai Normal University, Haikou 571127, China;
| | - Siyu Luo
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan University, No 58, Renmin Avenue, Haikou 570228, China; (C.L.); (Q.Y.); (S.L.); (X.S.); (Y.G.)
| | - Hui Hu
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan University, No 58, Renmin Avenue, Haikou 570228, China; (C.L.); (Q.Y.); (S.L.); (X.S.); (Y.G.)
| | - Shenglin Wang
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan University, No 58, Renmin Avenue, Haikou 570228, China; (C.L.); (Q.Y.); (S.L.); (X.S.); (Y.G.)
| | - Xiaofang Su
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan University, No 58, Renmin Avenue, Haikou 570228, China; (C.L.); (Q.Y.); (S.L.); (X.S.); (Y.G.)
| | - Songtao Xiao
- China Institute of Atomic Energy, Beijing 102413, China;
| | - Yanan Gao
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan University, No 58, Renmin Avenue, Haikou 570228, China; (C.L.); (Q.Y.); (S.L.); (X.S.); (Y.G.)
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Wang J, Wu T, Wang X, Chen J, Fan M, Shi Z, Liu J, Xu L, Zang Y. Construction of hydroxyl-functionalized hyper-crosslinked networks from polyimide for highly efficient iodine adsorption. iScience 2024; 27:108993. [PMID: 38327786 PMCID: PMC10847683 DOI: 10.1016/j.isci.2024.108993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 11/16/2023] [Accepted: 01/18/2024] [Indexed: 02/09/2024] Open
Abstract
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.
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Affiliation(s)
- Jianjun Wang
- College of Materials Science and Engineering, Qiqihar University, Wenhua Street 42, Qiqihar, Heilongjiang 161006, China
- College of Chemistry and Chemical Engineering, Technology Innovation Center of Industrial Hemp for State Market Regulation, Qiqihar University, Wenhua Street 42, Qiqihar, Heilongjiang 161006, China
| | - Tingting Wu
- College of Materials Science and Engineering, Qiqihar University, Wenhua Street 42, Qiqihar, Heilongjiang 161006, China
| | - Xianlong Wang
- College of Materials Science and Engineering, Qiqihar University, Wenhua Street 42, Qiqihar, Heilongjiang 161006, China
| | - Jiaqi Chen
- College of Chemistry and Chemical Engineering, Technology Innovation Center of Industrial Hemp for State Market Regulation, Qiqihar University, Wenhua Street 42, Qiqihar, Heilongjiang 161006, China
| | - Minyi Fan
- College of Chemistry and Chemical Engineering, Technology Innovation Center of Industrial Hemp for State Market Regulation, Qiqihar University, Wenhua Street 42, Qiqihar, Heilongjiang 161006, China
| | - Zhichun Shi
- College of Chemistry and Chemical Engineering, Technology Innovation Center of Industrial Hemp for State Market Regulation, Qiqihar University, Wenhua Street 42, Qiqihar, Heilongjiang 161006, China
| | - Jiao Liu
- College of Materials Science and Engineering, Qiqihar University, Wenhua Street 42, Qiqihar, Heilongjiang 161006, China
| | - Liang Xu
- Analysis and Testing Center, Qiqihar University, Wenhua Street 42, Qiqihar, Heilongjiang 161006, China
| | - Yu Zang
- College of Materials Science and Engineering, Qiqihar University, Wenhua Street 42, Qiqihar, Heilongjiang 161006, China
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