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Journal of Inorganic Materials, Volume. 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
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    AbstractGet PDF(in Chinese)
    Figures&Tables (18)
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    References (29)
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    Figures & Tables(18)
    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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    • Table 1. Chemical analysis (XRF) of PAL and Cu@PAL/wt%

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      Table 1. Chemical analysis (XRF) of PAL and Cu@PAL/wt%

      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 2. Comparison of several Cu based adsorbents for iodide adsorption

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      Table 2. Comparison of several Cu based adsorbents for iodide adsorption

      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 3. Isotherm parameters for the adsorption of I- anions by Cu@PAL

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      Table 3. Isotherm parameters for the adsorption of I- anions by Cu@PAL

      Langmuir modelFrenudlich model
      Qm/(mg∙g-1) KlR2Kf1/nR2
      1.029150.860410.996320.381730.510420.81026

    • Table 4. Adsorption properties of Cu@PAL and nano Cu exposed to air

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      Table 4. Adsorption properties of Cu@PAL and nano Cu exposed to air

      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 5. Kinetic parameters for the adsorption of I- by Cu@PAL

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      Table 5. Kinetic parameters for the adsorption of I- by Cu@PAL

      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 6. Leaching or desorption efficiencies of Cu@PAL and nano-Cu after adsorption

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      Table 6. Leaching or desorption efficiencies of Cu@PAL and nano-Cu after adsorption

      AdsorbentcNaCl/(mol∙L-1) Desorption efficiency/%
      Cu@PAL021.3
      0.132.1
      Nano-Cu087.4
      0.194.1
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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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    Paper Information

    Category: RESEARCH ARTICLE

    Received: Nov. 19, 2020

    Accepted: --

    Published Online: Dec. 8, 2021

    The Author Email: MAO Ping (pingmao@hyit.edu.cn), SUN Aiwu (sunaiwu@hyit.edu.cn)

    DOI:10.15541/jim20200663

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology