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    Journals >Journal of Inorganic Materials >Volume 36 >Issue 8 >Page 856 > Article
    • Journal of Inorganic Materials
    • Vol. 36, Issue 8, 856 (2021)
    Efficient Adsorption of Radioactive Iodide by Copper/Palygorskite Composite
    Xiangkun YU1, Kun LIU1, Zhipeng LI1, Yulu ZHAO1..., Jinyou SHEN2, Ping MAO1,*, Aiwu SUN1,* and Jinlong JIANG1|Show fewer author(s)
    Author Affiliations
  • 11. Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, School of Chemical Engineering, Huaiyin Institute of Technology, Huaian 223003, China
  • 22. Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
    • show less
    DOI: 10.15541/jim20200663 Cite this Article
    Xiangkun YU, Kun LIU, Zhipeng LI, Yulu ZHAO, Jinyou SHEN, Ping MAO, Aiwu SUN, Jinlong JIANG. Efficient Adsorption of Radioactive Iodide by Copper/Palygorskite Composite[J]. Journal of Inorganic Materials, 2021, 36(8): 856 Copy Citation Text show less
    SEM images of the samples (a) PAL, (b) Cu 2+@PAL, (c) Cu@PAL and (d) EDX pattern of Cu@PAL
    1. SEM images of the samples (a) PAL, (b) Cu 2+@PAL, (c) Cu@PAL and (d) EDX pattern of Cu@PAL
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    (a) XRD patterns of the samples and (b) structural schematic diagram of Cu@PAL
    2. (a) XRD patterns of the samples and (b) structural schematic diagram of Cu@PAL
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    (a) TEM image of Cu2+@PAL and elemental mappings of (b) N, (c) O, (d) Al, (e) Si, and (f) Cu
    3. (a) TEM image of Cu2+@PAL and elemental mappings of (b) N, (c) O, (d) Al, (e) Si, and (f) Cu
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    (a) TEM image of Cu@PAL and elemental mappings of (b) N, (c) O, (d) Al, (e) Si, and (f) Cu; and high magnification TEM (g) and HRTEM (h) images of Cu@PAL
    4. (a) TEM image of Cu@PAL and elemental mappings of (b) N, (c) O, (d) Al, (e) Si, and (f) Cu; and high magnification TEM (g) and HRTEM (h) images of Cu@PAL
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    XPS spectra of the samples
    5. XPS spectra of the samples
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    (a) TGA curves and (b) FT-IR spectra of the samples
    6. (a) TGA curves and (b) FT-IR spectra of the samples
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    (a) N2 adsorption-desorption isotherms and (b) pore diameter distributions of the samples
    7. (a) N2 adsorption-desorption isotherms and (b) pore diameter distributions of the samples
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    (a) Adsorption capacity of I- anions on Cu@PAL and (b) XRD patterns of adsorption products in the solution with different pH
    8. (a) Adsorption capacity of I- anions on Cu@PAL and (b) XRD patterns of adsorption products in the solution with different pH
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    (a) Adsorption isotherm of the samples, fitting curves of (b) Langmuir model and (c) Frenudlich model for adsorption isotherm of Cu@PAL
    9. (a) Adsorption isotherm of the samples, fitting curves of (b) Langmuir model and (c) Frenudlich model for adsorption isotherm of Cu@PAL
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    SEM (a) and TEM (b) and HRTEM (c) images of I-Cu@PAL
    10. SEM (a) and TEM (b) and HRTEM (c) images of I-Cu@PAL
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    Absorption kinetic curve (a), fitting curves of the pseudo first order kinetic model (b) and pseudo second order kinetic model (c) for adsorption kinetic of Cu@PAL
    11. Absorption kinetic curve (a), fitting curves of the pseudo first order kinetic model (b) and pseudo second order kinetic model (c) for adsorption kinetic of Cu@PAL
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    Effect of (a) anion and (b) cation on the adsorption of Cu@PAL
    12. Effect of (a) anion and (b) cation on the adsorption of Cu@PAL
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    CompositionPALCu@PAL
    SiO260.9659.87
    MgO9.368.12
    Al2O312.2011.07
    Fe2O38.007.51
    CaO5.550.46
    CuO0.019.83
    Na2O 0.120.01
    LOI3.803.13
    Table 1. Chemical analysis (XRF) of PAL and Cu@PAL/wt%
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    AdsorbentpHQe/ (mg∙g-1) Utilization efficiency/%Ref.
    Cuprite sulfide76.1—[27]
    Cu2O/Cu-C 741.210.38[28]
    Hollow Cu/Cu2O 733.01.85[20]
    Core-shell Cu/Cu2O 722.91.4[12]
    Cu76.350.32[29]
    Cu/PAL7116.171.98This work
    Table 2. Comparison of several Cu based adsorbents for iodide adsorption
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    Langmuir modelFrenudlich model
    Qm/(mg∙g-1) KlR2Kf1/nR2
    1.029150.860410.996320.381730.510420.81026
    Table 3. Isotherm parameters for the adsorption of I- anions by Cu@PAL
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    Time/hQe/(mg∙g-1)
    Cu@PALNano-Cu
    074.2234.7
    1269.4133.8
    2468.1110.4
    4864.1104.6
    7260.296.3
    14458.788.4
    Table 4. Adsorption properties of Cu@PAL and nano Cu exposed to air
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    Pseudo-first-orderPseudo-second-order
    Qm/ (mg∙g-1) k1/(g∙(mmol∙ g-1)-1) R2Qm/ (mg∙g-1) k2/(g∙(mmol∙ g-1)-1) R2
    56.100.44690.970474.18400.035490.9976
    Table 5. Kinetic parameters for the adsorption of I- by Cu@PAL
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    AdsorbentcNaCl/(mol∙L-1) Desorption efficiency/%
    Cu@PAL021.3
    0.132.1
    Nano-Cu087.4
    0.194.1
    Table 6. Leaching or desorption efficiencies of Cu@PAL and nano-Cu after adsorption
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    Abstract
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    Xiangkun YU, Kun LIU, Zhipeng LI, Yulu ZHAO, Jinyou SHEN, Ping MAO, Aiwu SUN, Jinlong JIANG. Efficient Adsorption of Radioactive Iodide by Copper/Palygorskite Composite[J]. Journal of Inorganic Materials, 2021, 36(8): 856
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