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Mesoporous Zeolitic Imidazolate Framework-67 Nanocrystals on Siliceous Mesocellular Foams for Capturing Radioactive Iodine
Chen, L; Qian, JY; Zhu, DD; Yang, S; Lin, J; He, MY; Zhang, ZH; Chen, Q
2020
Source PublicationACS APPLIED NANO MATERIALS
ISSN2574-0970
Volume3Issue:6Pages:5390-5398
Subtype期刊论文
AbstractEffective disposal of radioactive iodine has been a persistent challenge in nuclear fuel recycling. Herein, we synthesized a series of micro-/mesoporous hierarchical adsorbents by the zeolitic imidazolate framework-67 (ZIF-67) nanocrystal growth onto siliceous mesocellular foams (MCFs) with functional amino groups. The combination of both benefits of microporous ZIF-67 and mesoporous MCF allows for obtaining a series of nanoscale ZIF-67@MCF hybrid materials, featuring enhanced porosity, good crystallinity, and excellent thermal stabilities. The abundant imidazole rings and amino groups not only function as organic linkers but also serve as active adsorption sites for the potential application of I-2 remediation. The maximum liquid adsorption amount of ZIF-67@MCF toward I-2 can reach up to 1630 mg.g(-1) with an amination time of 10 h. The iodine adsorption kinetics were well fitted with pseudo-second-order kinetics, and isotherms were fitted by Langmuir models, respectively, implying a monolayer chemisorption process. The vapor I-2 adsorption capacities of 1602-1779 mg.g(-1) also indicated these ZIF-67@MCF nanomaterials are promising for the application in both vapor- and liquid-phase iodine removal. The electron transfers from the N atom to I atom can be confirmed by X-ray photoelectron spectroscopy and are responsible for the strong affinity for iodine adsorption. Compared to conventional materials, this study proves these talented nanoporous adsorbents for the application in iodine capture.
KeywordMETAL-ORGANIC FRAMEWORK HIGHLY EFFICIENT ENRICHMENT VOLATILE IODINE SORPTION CONFINEMENT ADSORPTION CRYSTAL NANOPARTICLES SEPARATION CATALYSTS
DOI10.1021/acsanm.0c00756
Indexed BySCI ; EI
Language英语
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Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/33002
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Changzhou Univ, Jiangsu Key Lab Adv Catalyt Mat & Technol, Adv Catalysis & Green Mfg Collaborat Innovat Ccnt, Changzhou 213164, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China
Recommended Citation
GB/T 7714
Chen, L,Qian, JY,Zhu, DD,et al. Mesoporous Zeolitic Imidazolate Framework-67 Nanocrystals on Siliceous Mesocellular Foams for Capturing Radioactive Iodine[J]. ACS APPLIED NANO MATERIALS,2020,3(6):5390-5398.
APA Chen, L.,Qian, JY.,Zhu, DD.,Yang, S.,Lin, J.,...&Chen, Q.(2020).Mesoporous Zeolitic Imidazolate Framework-67 Nanocrystals on Siliceous Mesocellular Foams for Capturing Radioactive Iodine.ACS APPLIED NANO MATERIALS,3(6),5390-5398.
MLA Chen, L,et al."Mesoporous Zeolitic Imidazolate Framework-67 Nanocrystals on Siliceous Mesocellular Foams for Capturing Radioactive Iodine".ACS APPLIED NANO MATERIALS 3.6(2020):5390-5398.
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