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Journal of Inorganic Materials, Volume. 34, Issue 2, 193(2019)

Construction of Hierarchical α-MoO3 Hollow Microspheres and Its High Adsorption Performance towards Organic Dyes

Li-Li SUI1, Run WANG1, Dan ZHAO2, Shu-Chang SHEN1, Li SUN1, Ying-Ming XU2, Xiao-Li CHENG2, Li-Hua HUO2, [in Chinese]1, [in Chinese]1, [in Chinese]2, [in Chinese]1, [in Chinese]1, [in Chinese]2, [in Chinese]2, and [in Chinese]2
Author Affiliations
  • 11. School of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China
  • 22. Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
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    References (30)
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    Figures & Tables(12)
    XRD patterns of the precursor (a) and the product calcined at 400 ℃ in air for 2 h (b)
    . XRD patterns of the precursor (a) and the product calcined at 400 ℃ in air for 2 h (b)

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    FT-IR spectrum of the product calcined at 400 ℃ in air for 2 h
    . FT-IR spectrum of the product calcined at 400 ℃ in air for 2 h

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    Typical SEM images of precursor (a, b) and α-MoO3 microspheres (c)
    . Typical SEM images of precursor (a, b) and α-MoO3 microspheres (c)

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    Typical TEM (a, b), HRTEM (c) images and SAED pattern (inset in (c)) of α-MoO3 hollow microspheres
    . Typical TEM (a, b), HRTEM (c) images and SAED pattern (inset in (c)) of α-MoO3 hollow microspheres

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    Nitrogen adsorption-desorption isotherms and pore size distribution plot (inset) of α-MoO3 hollow microspheres
    . Nitrogen adsorption-desorption isotherms and pore size distribution plot (inset) of α-MoO3 hollow microspheres

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    Effect of adsorbent dosage (a) and concentration of MB (b) on the adsorption performances of α-MoO3 hollow microspheres, UV-Vis spectra (c) and removal percentage curves (d) of α-MoO3 to MB for different contact times
    . Effect of adsorbent dosage (a) and concentration of MB (b) on the adsorption performances of α-MoO3 hollow microspheres, UV-Vis spectra (c) and removal percentage curves (d) of α-MoO3 to MB for different contact times

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    Pseudo-first-order (a) and pseudo-second-order (b) sorption kinetics for different concentrations of MB onto α-MoO3 hollow microspheres
    . Pseudo-first-order (a) and pseudo-second-order (b) sorption kinetics for different concentrations of MB onto α-MoO3 hollow microspheres

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    Langmuir (a) and Freundlich (b) adsorption isotherm curves for adsorption of MB by α-MoO3 hollow microspheres
    . Langmuir (a) and Freundlich (b) adsorption isotherm curves for adsorption of MB by α-MoO3 hollow microspheres

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    Zeta potential of α-MoO3 hollow microspheres at different pH
    . Zeta potential of α-MoO3 hollow microspheres at different pH

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    • Table 1. Kinetic parameters for adsorption of MB on the samples of α-MoO3 hollow microspheres

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      Table 1. Kinetic parameters for adsorption of MB on the samples of α-MoO3 hollow microspheres

      C0/(mg·L-1)qe.exp/(mg·g-1)Pseudo-second-orderPseudo-first-order
      qe.cal/(mg·g-1)k2/(×10-3, g·mg-1·min-1)R2qe.cal/(mg·g-1)k1
      /(×10-3, min-1)      		R2
      1019.9720.834.100.99966.9810.130.6385
      2039.8640.1610.900.99995.3420.450.8994
      3058.1659.850.630.990744.6713.040.9456
      4065.2265.100.820.990336.899.300.9308

    • Table 2. Adsorption isotherm parameters of α-MoO3 hollow microspheres to MB

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      Table 2. Adsorption isotherm parameters of α-MoO3 hollow microspheres to MB

      AdsorptionLangmuir modelFreundlich model
      qm/(mg·g-1)KL/(L·mg-1)RLR2KF/(L·g-1)nR2
      MB1543.21.190.00140.9978724.441.820.9035

    • Table 3. Comparison of the maximum adsorption capacities for MB on adsorbents of different metal oxides

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      Table 3. Comparison of the maximum adsorption capacities for MB on adsorbents of different metal oxides

      AdsorbentMaximum adsorption capacity, qm/(mg·g-1)Ref.
      Hierarchical α-MoO3
      hollow microspheres      		1543.2This work
      WO3 nanotube75.0[26]
      WO3 nanorods73.0[27]
      WO3 hollow spheres138.9[28]
      Hierarchical WO3 hydrates274.3[8]
      SiO2 nanoparticles679.9[29]
      Fe3O4@Ag/SiO2
      nanospheres      		128.5[30]
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    Li-Li SUI, Run WANG, Dan ZHAO, Shu-Chang SHEN, Li SUN, Ying-Ming XU, Xiao-Li CHENG, Li-Hua HUO, [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Construction of Hierarchical α-MoO3 Hollow Microspheres and Its High Adsorption Performance towards Organic Dyes[J]. Journal of Inorganic Materials, 2019, 34(2): 193

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    Paper Information

    Category: Research Articles

    Received: Mar. 30, 2018

    Accepted: --

    Published Online: Sep. 24, 2021

    The Author Email:

    DOI:10.15541/jim20180132

    Topics

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