Journal of Inorganic Materials, Volume. 38, Issue 11, 1281(2023)

PEI Modified Hydrated Calcium Silicate Derived from Fly Ash and Its adsorption for Removal of Cu (II) and Catalytic Degradation of Organic Pollutants

Ya TANG1...2, Shengrui SUN2, Jia FAN1,2, Qingfeng YANG3, Manjiang DONG2, Jiahui KOU1,* and Yangqiao LIU2,* |Show fewer author(s)
Author Affiliations
  • 11. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China
  • 22. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
  • 33. Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
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    Figures & Tables(18)
    EDS analyses of CSH
    (a) XRD patterns, (b) FT-IR spectra and (c) N2 adsorption-desorption isotherms of CSH and PCSH
    Different magnification SEM images of (a, b) CSH and (c, d) PCSH
    EDS analysis of PCSH
    Linear fitting curves of (a) Langmuir model and (b) Freundlich model for isotherms of CSH and PCSH
    Adsorption characteristics of samples
    EDS analyses of PCSH-Cu
    Characteristics of Cu-absorbed samples
    SEM images of (a) CSH-Cu, (b) PCSH-Cu, (c) CSH- Cu-c, and (d) PCSH-Cu-c
    (a) XRD patterns and (b) FT-IR spectra of CSH-Cu-c and PCSH-Cu-c
    Degradation of RhB by PMS with CSH-Cu-c and PCSH-Cu-c
    Suface elements and chemical status of samples
    Free radical capture experiments of PCSH-Cu-c
    Change of 4-NP residue percentage
    • Table 1. Rate constants (k) for the degradation of RhB by PMS with different catalysts

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      Table 1. Rate constants (k) for the degradation of RhB by PMS with different catalysts

      CatalystC1/(g·L-1) CPMS/(g·L-1) CRhB/(mg·L-1) k/min-1Ref.
      MPC10.616200.013[27]
      α-MnO2/Pal0.10.1200.0204[28]
      Vis/BiVO40.50.616100.04[29]
      rGO-CoPc0.30.616100.288[30]
      CSH-Cu-c0.80.12200.036This work
      PCSH-Cu-c0.80.12200.7135This work
    • Table 1. Langmuir and Freundlich isotherm fitting parameters

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      Table 1. Langmuir and Freundlich isotherm fitting parameters

      SampleLangmuir modelFreundlich model
      qmKLR2nKFR2
      CSH294.100.02000.99453.81054.000.8670
      PCSH588.230.05630.99825.848198.860.9450
    • Table 2. Comparison of maximum adsorption capacities of various sorbents as reported in the literature for Cu(II)

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      Table 2. Comparison of maximum adsorption capacities of various sorbents as reported in the literature for Cu(II)

      Sampleq / (mg·g-1) SBET/ (m2·g-1) Ref.
      Activated carbon10921[S1]
      Modified SBA-15 mesoporous silica46317[S2]
      MCM-48126511[S3]
      Citrate-LDH1378[S4]
      Mesoporous silica153462[S5]
      Humulus scandens-derived biochars221450[S6]
      Steel slag-derived CSH24477[S7]
      Amorphous molybdenum sulphide25928[S8]
      NPCS-PEI276491[S9]
      CSH294240This work
      PCSH588371This work
    • Table 2. Rate constants (k) for the degradation of 4-NP by NaBH4 with different catalysts

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      Table 2. Rate constants (k) for the degradation of 4-NP by NaBH4 with different catalysts

      CatalystC1/(g·L-1) CNaBH4/(mmol·L-1) C4-NP/(mmol·L-1) k/(×10-3,s-1) Ref.
      CuO NLs0.307100.120.36[38]
      Ag-NP/C0.3336.6674.7×10-21.69[39]
      Cu2−xSe/rGO/PVP2.562.50.1252.3[40]
      Pd-FG0.5100.12.35[41]
      CSH-Cu-c0.16750.10.61This work
      PCSH-Cu-c0.16750.111.47This work
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    Ya TANG, Shengrui SUN, Jia FAN, Qingfeng YANG, Manjiang DONG, Jiahui KOU, Yangqiao LIU. PEI Modified Hydrated Calcium Silicate Derived from Fly Ash and Its adsorption for Removal of Cu (II) and Catalytic Degradation of Organic Pollutants[J]. Journal of Inorganic Materials, 2023, 38(11): 1281

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    Paper Information

    Category:

    Received: Apr. 28, 2023

    Accepted: --

    Published Online: Mar. 6, 2024

    The Author Email: KOU Jiahui (koujiahui@163.com), LIU Yangqiao (yqliu@mail.sic.ac.cn)

    DOI:10.15541/jim20230209

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