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    Journals >Journal of Inorganic Materials >Volume 38 >Issue 5 >Page 529 > Article
    • Journal of Inorganic Materials
    • Vol. 38, Issue 5, 529 (2023)
    Adsorption of Arsenate in Water by Zirconia-halloysite Nanotube Material
    Chunxia GUO, Weidong CHEN*, Shufang YAN, Xueping ZHAO..., Ao YANG and Wen MA|Show fewer author(s)
    Author Affiliations
  • Inner Mongolia Key Laboratory of Thin Film and Coatings, College of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
    • show less
    DOI: 10.15541/jim20220576 Cite this Article
    Chunxia GUO, Weidong CHEN, Shufang YAN, Xueping ZHAO, Ao YANG, Wen MA. Adsorption of Arsenate in Water by Zirconia-halloysite Nanotube Material[J]. Journal of Inorganic Materials, 2023, 38(5): 529 Copy Citation Text show less
    SEM images of (a) HNT and (b) ZrO2/HNT composite
    1. SEM images of (a) HNT and (b) ZrO2/HNT composite
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    Morphologies and element distribution of HNT and ZrO2/HNT
    2. Morphologies and element distribution of HNT and ZrO2/HNT
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    XRD patterns of (a) ZrO2/HNT and (b) HNT
    3. XRD patterns of (a) ZrO2/HNT and (b) HNT
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    FT-IR spectra of HNT, ZrO2/HNT, and ZrO2/HNT-As(V)
    4. FT-IR spectra of HNT, ZrO2/HNT, and ZrO2/HNT-As(V)
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    Adsorption kinetics for As(V) adsorption on HNT and ZrO2/HNT
    5. Adsorption kinetics for As(V) adsorption on HNT and ZrO2/HNT
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    Adsorption isotherms of As(V) on ZrO2/HNT under different temperatures
    6. Adsorption isotherms of As(V) on ZrO2/HNT under different temperatures
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    Effect of pH on Zeta potential and adsorption capacity of ZrO2/HNT for As(V)
    7. Effect of pH on Zeta potential and adsorption capacity of ZrO2/HNT for As(V)
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    Effects of co-existing ions on adsorption of As(V) by ZrO2/HNT
    8. Effects of co-existing ions on adsorption of As(V) by ZrO2/HNT
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    (a) Survey, (b) As3d, and (c) Zr3d XPS spectra of (1) ZrO2/HNT and (2) ZrO2/HNT-As(V)
    9. (a) Survey, (b) As3d, and (c) Zr3d XPS spectra of (1) ZrO2/HNT and (2) ZrO2/HNT-As(V)
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    D-R isotherm plots obtained for the adsorption of As(V) on ZrO2/HNT
    S1. D-R isotherm plots obtained for the adsorption of As(V) on ZrO2/HNT
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    Plot of lnKd versus 1/T obtained for the adsorption of As(V) on ZrO2/HNT
    S2. Plot of lnKd versus 1/T obtained for the adsorption of As(V) on ZrO2/HNT
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    ModelParameter
    Psedo-first-orderQe/(mg•g-1)K1/min-1R2
    20.490.69850.924
    Psedo-second-orderQe/(mg•g-1)K2/(g•mg-1•min-1)R2
    21.160.05480.984
    Table 1. Adsorption kinetics parameters for As(V) adsorption on ZrO2/HNT
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    Isotherm modelParameterTemperature/℃
    253545
    Langmuir modelQm/(mg•g-1)27.4581930.0361931.59709
    kL/(L•mg-1)1.758442.368583.45464
    R20.99720.99940.9999
    Freundlich modeln9.305529.263689.98317
    kF/(mg1-(1/n)•L1/n•g-1)17.1574518.9266820.52261
    R20.73700.769540.74909
    D-R modelqm/(mol•g-1)8.09×10-4
    β/(mol2•kJ-2)4.42×10-9
    E/(kJ•mol-1)10.64
    R20.94213
    Table 2. Fitting results of isotherms for As(V) adsorption onto ZrO2/HNT
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    AdsorbentpHAdsorption capacity/(mg•g-1) Ref.
    ZrO2/multiwall carbon nanotube65[12]
    Ferric oxyhydroxides/activated carbon75[26]
    Cerium-loaded cation exchange resin5-61.03[27]
    Hydrous zirconium oxide/D4013.1611.84[28]
    Magnetic iron oxide/carbon encapsulates717.9[29]
    Fe3O4-MnO2/graphite2-1212.2[30]
    ZrO2/sawdust3-1112[31]
    Iron oxide/carbon nanotubes5.59.74[32]
    γ-Fe2O3 cores coated with ZrO2918.3[33]
    ZrO2/HNT327.46This study
    Table 3. Comparison of ZrO2/HNT with other reported similar adsorbents for As(V) adsorption
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    Thermodynamic parameter
    Temperature/℃ΔG°/(kJ•mol-1)ΔH°/(kJ•mol-1)ΔS°/(kJ•mol-1•K-1)
    25-20.4137.750.19
    35-21.96
    45-24.33
    Table 4. Temperature-dependent thermodynamic characteristics of As(V) adsorption on ZrO2/HNT
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    Abstract
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    Equations (10)
    References (36)
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    Chunxia GUO, Weidong CHEN, Shufang YAN, Xueping ZHAO, Ao YANG, Wen MA. Adsorption of Arsenate in Water by Zirconia-halloysite Nanotube Material[J]. Journal of Inorganic Materials, 2023, 38(5): 529
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