1. Fabrication of hydrogen-bonded metal-complex frameworks for capturing iodine.
- Author
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Xie, Yuanbo, Zhong, Fangyuan, Chen, Hongxu, Chen, Danni, Wang, Jiawen, Gao, Junkuo, and Yao, Juming
- Subjects
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IODINE , *ADSORPTION capacity , *ADSORPTION kinetics , *ADSORPTION (Chemistry) - Abstract
In this paper, novel hydrogen-bonded metal-complex frameworks MPM-1-TIFSIX and HOF-21 were selected as adsorbents to adsorb iodine. MPM-1-TIFSIX and HOF-21 were prepared by layering method and mixed stirring method, respectively. The structures of the two HOFs were characterized in detail by XRD, BET, TGA and FT-IR. The adsorption behavior and adsorption capacity of MPM-1-TIFSIX and HOF-21 for iodine were investigated in detail. The experimental data showed that the equilibrium adsorption amounts of MPM-1-TIFSIX and HOF-21 were 205.51 mg/g and 172.86 mg/g, respectively. The adsorption process of MPM-1-TIFSIX was conformed to be pseudo-second-order kinetic, while the adsorption process of HOF-21 was conformed to be pseudo-first-order kinetic. The results indicated that HOFs could be used as iodine capture and storage materials. Two different structures of HOF materials were synthesized and used for the capture of iodine. Both materials have different properties, which are related to their structure. MPM-1-TIFSIX with a larger pore size is capable of adsorbing more iodine molecules. HOF-21 can only absorb a small amount of iodine due to the small pores, which can also be seen from the figure. Image 1 [ABSTRACT FROM AUTHOR]
- Published
- 2019
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