Jiaxin Yang, Qianqian Yan, Hui Hu, Ming Wang, Shenglin Wang, Jianyi Wang, Songtao Xiao, Xiaofang Su, Ping Zhang, Yanan Gao
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引用次数: 0
Abstract
Development of porous materials with excellent capture performance of radioactive iodides (mainly molecular I2 and organic CH3I) remains an ongoing challenge in nuclear industry. Currently, numerous efforts have been devoted to exploring novel adsorbents with good textural properties like high specific surface and large pore volume. However, some nonporous materials exhibited outstanding iodine adsorption capability. Therefore, it is not yet clear what factors determine the iodine uptake capacity. Herein, a novel paradigm of iodine capture that overturns previous cognition is proposed by exploring some 2D electron-donating nitrogen-containing covalent organic frameworks (COFs). As validated by different pores of 2D COFs shaping from rhombic to hexagonal and ranging from micropores to mesopores, their adsorption capabilities of either molecular I2 or CH3I are more likely to depend on the number of adsorption binding sites, rather than their textural properties. This novel paradigm of iodine capture is of great importance to design of porous materials for disposing of exhaust gases from nuclear power plants.
Graphical Abstract
For two-dimensional covalent organic frameworks that have same topological structure and electron-donating nitrogen-containing fragments with similar adsorption affinity to iodine molecules, their adsorption capabilities, for either molecular I2 or organic CH3I, are more likely to depend on the number of adsorption binding sites, rather than their textural properties like specific surface areas and pore volumes.
期刊介绍:
Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field.
The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest.
Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials.
Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.