Article
Biochemistry & Molecular Biology
Canran Wang, Shan Jiang, Wenyue Ma, Zhaoyang Liu, Leijing Liu, Yongcun Zou, Bin Xu, Wenjing Tian
Summary: Covalent organic frameworks (COFs) with different crystalline structures were obtained and found to have promising potential for efficient iodine adsorption. The [C-4+C-2] topology COF (PyT-1) exhibited more twisted pore channels and complex ink-bottle pores compared to the [C-4+C-4] topology COF (PyT-2). Both PyT-1 and PyT-2 showed excellent adsorption properties for iodine capture in gaseous and liquid mediums, with PyT-1 having an exceptional maximum adsorption capacity of 0.635 g g(-1).
Article
Chemistry, Multidisciplinary
Yaqiang Xie, Tingting Pan, Qiong Lei, Cailing Chen, Xinglong Dong, Youyou Yuan, Jie Shen, Yichen Cai, Chunhui Zhou, Ingo Pinnau, Yu Han
Summary: This study demonstrates the development of a high-performance adsorbent iCOF-AB-50 for the capture of iodine (I-2) in radioactive nuclear waste treatment. The research highlights the importance of balancing textural properties and binding sites of adsorbents to achieve optimal I-2 capture performance.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Engineering, Chemical
Zhipeng Zhang, Xiansong Shi, Xingyuan Wang, Zhe Zhang, Yong Wang
Summary: Researchers have designed and fabricated a hybrid material by encapsulating covalent organic frameworks (COFs) into ultralight cellulose aerogels for efficient iodine capture. The hybrid aerogels exhibit excellent absorption performances and high uptake capacities toward solvent-dissolved and vaporized iodine. Moreover, the aerogels can be shaped into columns for continuous operations, providing a new way for COF materials shaping and inspiring the design of high-performance iodine capture platforms.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Sanan Song, Yue Shi, Ning Liu, Fengqi Liu
Summary: The study proposed an efficient design strategy for designing adsorbents with high potential for absorbing radioactive iodine through theoretical screening. Experiments using COFs as demonstration confirmed the theoretical predictions, showing that COFs can greatly increase the adsorption of iodine.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Wen-Zhi She, Qiu-Lin Wen, Hai-Chi Zhang, Jin-Zhou Liu, Rong Sheng Li, Jian Ling, Qiue Cao
Summary: In this study, a nanoporous nitrogen-rich covalent organic framework (TTA-DMTP-COF) was synthesized for the adsorption of iodine and methyl iodide. The results showed that TTA-DMTP-COF exhibited effective adsorption properties and could capture radioactive iodine from air and solution in harsh environments.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Onur Yildirim, Arshak Tsaturyan, Alessandro Damin, Stefano Nejrotti, Valentina Crocella, Angelo Gallo, Michele Remo Chierotti, Matteo Bonomo, Claudia Barolo
Summary: In this study, a novel 2D covalent organic polymer (COP), TAPB-QOT COP, is designed and synthesized. The polymer exhibits high iodine (I2) uptake capacity due to the presence of embedded sulfur sites and a conjugated scaffold. Characterization techniques confirm the high affinity between the sulfur atom in the COP and I2. The TAPB-QOT COP shows promising prospects for iodine capture with high volumetric uptake and reversibility.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Yinghui Wang, Meng Zhao, Lili Zhang, Yuantao Chen
Summary: A covalent organic polymer (COP) based on imine was developed in this study, showing high adsorption capacity for radioactive iodine. The adsorption process is spontaneous and endothermic, benefiting from an increase in temperature.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2021)
Article
Chemistry, Applied
Yuxiang Zhao, Xin Liu, Yongpeng Li, Meng Xia, Tian Xia, Haochen Sun, Zhuyin Sui, Xin-Ming Hu, Qi Chen
Summary: COF-PA is a novel adsorbent designed for dual chemical adsorption of iodine, showing the fastest adsorption rate, high efficiency, and stability. Additionally, it can be used for selective iodine detection, demonstrating promising application prospects.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Linhuang Xie, Zhiye Zheng, Qiuyuan Lin, Huan Zhou, Xiaofan Ji, Jonathan L. Sessler, Hongyu Wang
Summary: A series of calix[4]pyrrole-based crosslinked polymer networks designed for iodine capture were reported, showing high iodine vapor adsorption capacities despite low surface areas. These materials contain a large number of effective sorption sites, enabling efficient iodine capture.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Yuwei Zhang, Yongfeng Zhi, Yanning Zhao, Chunyu Zhang, Xiaolong Luo
Summary: Two covalent organic frameworks (F-COF-1 and F-COF-2) were synthesized from flexible building blocks via Schiff base condensation reactions under solvothermal conditions. These F-COFs exhibited good porosity, crystallinity, and high density of N and O atoms in their skeletons, which contributed to their high iodine capture abilities (up to 5.51 g g(-1)) through supramolecular forces and the elasticity and self-adaptability of their pore channels.
Article
Engineering, Environmental
Run-Han Yan, Wei-Rong Cui, Cheng-Rong Zhang, Xue-Jing Li, Juan Huang, Wei Jiang, Ru-Ping Liang, Jian-Ding Qiu
Summary: This study developed a series of adsorbents for uranium extraction inspired by the interaction between imidazole affinity ligand of histidine and uranium. The covalent organic polymers showed promising extraction abilities with high selectivity for uranium, highlighting the potential for environmental protection and human health. The synergistic effects between hydroxyl groups and imidazole linkages contributed to the high efficiency of uranium extraction.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Applied
Yuan Li, Xiaoguang Li, Jufeng Li, Wei Liu, Guoe Cheng, Hanzhong Ke
Summary: Efficient capture of nuclear waste, like radionuclide iodine, has drawn global attention due to health concerns. Phosphine-based covalent organic frameworks (P-COFs) show high specific surface area and thermal stability, making them promising for iodine adsorption. A synthesized biphenyl linked P-COF demonstrates exceptional iodine uptake, indicating potential for radioiodine capture from nuclear waste.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jie Fu, Jia-Ying Liu, Guo-Hao Zhang, Qiu-Hong Zhu, Shuang-Long Wang, Song Qin, Ling He, Guo-Hong Tao
Summary: Adsorption, storage, and conversion of gases are the three critical topics in the field of clean energy and environmental mediation. Exploring new methods to prepare high-performance materials to improve gas adsorption is one of the most concerning topics in recent years. In this work, an ionic liquid solution process (ILSP) is explored to greatly improve the adsorption kinetic performance of covalent organic framework (COF) materials for gaseous iodine.
Article
Chemistry, Applied
Hai Zhu, Tong-Mou Geng, Kai-Bin Tang
Summary: In this study, a series of fully flexible cyclotriphosphazene-based COFs were synthesized for the first time using reversible Schiff base polycondensation reactions. These COFs, constructed entirely by flexible building blocks, exhibited higher crystallinity and BET specific surface areas compared to COFs constructed by rigid linkers. They showed higher iodine adsorption capacities and could fluorescently sense iodine with high sensitivity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Environmental
Tianxing Wang, Soraia P. S. Fernandes, Joana Araujo, Xiaoxi Li, Laura M. Salonen, Begona Espina
Summary: In this study, a covalent organic polymer was designed and synthesized for the efficient adsorption of STX. The prepared material showed fast adsorption of STX within 1 hour and demonstrated good reusability and high recovery rates, making it a potential candidate for the extraction and pre-concentration of STX from aquatic environments.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
