• Journal of Inorganic Materials
  • Vol. 35, Issue 3, 345 (2020)
Rong LIU, Wei ZHANG, Yuantao CHEN*, Yuanrui FAN, Guangzhang HU, Cheng XU, and Zheng HAN
Author Affiliations
  • School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining 810008, China
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    DOI: 10.15541/jim20190351 Cite this Article
    Rong LIU, Wei ZHANG, Yuantao CHEN, Yuanrui FAN, Guangzhang HU, Cheng XU, Zheng HAN. Adsorption of Iodine by ZIF Materials[J]. Journal of Inorganic Materials, 2020, 35(3): 345 Copy Citation Text show less
    Standard curve of iodine-cyclohexane after extraction of iodine from water with cyclohexane
    1. Standard curve of iodine-cyclohexane after extraction of iodine from water with cyclohexane
    Simulated and experimental XRD patterns of ZIF-8 and ZIF-67
    2. Simulated and experimental XRD patterns of ZIF-8 and ZIF-67
    SEM images of ZIF-8 and ZIF-67 before and after iodine adsorption
    3. SEM images of ZIF-8 and ZIF-67 before and after iodine adsorption
    Mapping images and EDS patterns of ZIF-8 and ZIF-67
    4. Mapping images and EDS patterns of ZIF-8 and ZIF-67
    TGA curves of ZIF-8 (a) and ZIF-67 (b)
    5. TGA curves of ZIF-8 (a) and ZIF-67 (b)
    Nitrogen adsorption and desorption curves of ZIF-8 (a) and ZIF-67 (b)
    6. Nitrogen adsorption and desorption curves of ZIF-8 (a) and ZIF-67 (b)
    ZIF-8 (a) and ZIF-67 (b) adsorption capacity dependences of the initial concentration of the solution
    7. ZIF-8 (a) and ZIF-67 (b) adsorption capacity dependences of the initial concentration of the solution
    Iodine adsorption capacity dependence of the adsorption time by ZIF-8 and ZIF-67
    8. Iodine adsorption capacity dependence of the adsorption time by ZIF-8 and ZIF-67
    Adsorption mechanism of iodine on ZIF-8 and ZIF-67
    9. Adsorption mechanism of iodine on ZIF-8 and ZIF-67
    ZIF-8ZIF-67
    Langmuir equationQm/(mg·g-1)64416.7177747.64
    kL/(L·mg-1)1.59×10-41.30×10-4
    R20.990.99
    Freundlich equationkF/(mg·g-1)10.0010.84
    n1.000.98
    R21.000.99
    Table 1. Langmuir and Freundlich parameters for adsorption of iodine by ZIF-8 and ZIF-67
    ZIF-8ZIF-67
    Psedo-first-order kinetics equationQe/(mg·g-1)1010.541047.37
    k1/(L·mg-1)1.30×10-41.49×10-4
    R20.970.93
    Psedo-second-order kinetics equationQe/(mg·g-1)947.61916.08
    k2/(g·min-1·mg-1)0.080.12
    R20.990.96
    Table 2. Pseudo first and pseudo second order kinetics parameters for the adsorption of iodine by ZIF-8 and ZIF-67
    Rong LIU, Wei ZHANG, Yuantao CHEN, Yuanrui FAN, Guangzhang HU, Cheng XU, Zheng HAN. Adsorption of Iodine by ZIF Materials[J]. Journal of Inorganic Materials, 2020, 35(3): 345
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