• Journal of Inorganic Materials
  • Vol. 35, Issue 3, 309 (2020)
Mingyu ZHU, Dezhe FAN, Bei LIU, Shuya LIU, Ming FANG*, and Xiaoli TAN
Author Affiliations
  • MOE Key Laboratory of Resources and Environmental System Optimization, North China Electric Power University, Beijing 102206, China
  • show less
    DOI: 10.15541/jim20190370 Cite this Article
    Mingyu ZHU, Dezhe FAN, Bei LIU, Shuya LIU, Ming FANG, Xiaoli TAN. C@K2Ti6O13 Hierarchical Nano Materials: Effective Adsorption Removal of Cr(VI)[J]. Journal of Inorganic Materials, 2020, 35(3): 309 Copy Citation Text show less
    (a) SEM image, (b) TEM image, (c) HRTEM image, (d) XRD pattern, (e) N2 adsorption-desorption isotherm and (f) TGA- DTG curves of C@K2Ti6O13 hierarchical nanostructures
    1. (a) SEM image, (b) TEM image, (c) HRTEM image, (d) XRD pattern, (e) N2 adsorption-desorption isotherm and (f) TGA- DTG curves of C@K2Ti6O13 hierarchical nanostructures
    FT-IR spectra of the samples annealed at different temperatures
    2. FT-IR spectra of the samples annealed at different temperatures
    Effect of pH and ionic strength on Cr(VI) adsorption
    3. Effect of pH and ionic strength on Cr(VI) adsorption
    (a) Effect of contact time on Cr(VI) adsorption onto C@K2Ti6O13 HNMs and (b) corresponding fitting curve by the pseudo-second-order kinetic model
    4. (a) Effect of contact time on Cr(VI) adsorption onto C@K2Ti6O13 HNMs and (b) corresponding fitting curve by the pseudo-second-order kinetic model
    (a) Adsorption isotherms, (b) Langmuir isotherm model, (c) Freundlich isotherm model, and (d) plot of lnKdvs 1/T of the Cr(VI) on C@K2Ti6O13
    5. (a) Adsorption isotherms, (b) Langmuir isotherm model, (c) Freundlich isotherm model, and (d) plot of lnKdvs 1/T of the Cr(VI) on C@K2Ti6O13
    T/KLangmuir modelFreundlich model
    qmbR2nKfR2
    298370.0560.972.72.20.97
    313370.0520.952.72.20.93
    328290.0660.943.22.20.89
    Table 1. Parameters simulated by Langmuir and Freundlich models of C@K2Ti6O13
    ΔHθ/(kJ·mol-1)ΔSθ/(kJ·K-1·mol-1)ΔGθ/(kJ·mol-1)
    298 K313 K323 K
    0.0750.0124-4.77-4.74-4.75
    Table 2. Thermodynamic parameters for Cr(VI) adsorption
    Mingyu ZHU, Dezhe FAN, Bei LIU, Shuya LIU, Ming FANG, Xiaoli TAN. C@K2Ti6O13 Hierarchical Nano Materials: Effective Adsorption Removal of Cr(VI)[J]. Journal of Inorganic Materials, 2020, 35(3): 309
    Download Citation