Post-synthetic modification of zeolitic imidazolate framework-90 via Schiff base reaction for ultrahigh iodine capture
文献信息
Zilong Zhang, Yanchun Chen, Yiheng Sun, Zilu Chen, Zhan-Yun Zhang, Dongcheng Liu, Huan-Cheng Hu
The post-synthetic modification of zeolitic imidazolate frameworks (ZIFs) is an effective strategy for preparing new materials that exhibit superior performance compared to their parental ZIFs. Herein, we quantitatively transformed the aldehyde group of ZIF-90 into mono- and bis-Schiff bases, and the resulting compounds ZIF-90-I–ZIF-90-III still retained the crystallinity and their parental structures. Importantly, ZIF-90-III with the highest amount of mono-Schiff base showed the maximum iodine uptake capacities of 6600 mg g−1 and 1826 mg g−1 for iodine vapor and iodine/cyclohexane solution, respectively, which are 1.5- and 3.4-fold as much as that of ZIF-90, being among the highest reported to date for metal–organic frameworks (MOFs). Noteworthily, activation energies for iodine adsorption of ZIF-90 and its post-synthetic derivatives were speculated experimentally, which was firstly investigated for MOFs. Meanwhile, adsorption kinetics, iodine species during iodine adsorption process and the related theoretical calculations were also studied in detail.
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Journal of Materials Chemistry A

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment












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