• Journal of Inorganic Materials
  • Vol. 35, Issue 5, 601 (2020)
Ziyang LIU, Zhen GENG, and Zhaoyang LI
Author Affiliations
  • School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
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    DOI: 10.15541/jim20190144 Cite this Article
    Ziyang LIU, Zhen GENG, Zhaoyang LI. Preparing Biomedical CaCO3/HA Composite with Oyster Shell[J]. Journal of Inorganic Materials, 2020, 35(5): 601 Copy Citation Text show less
    (a) XRD pattern, (b) EDS analysis, (c) SEM micrograph and (d) TEM image and SAED pattern of the powders prepared by heating and washing the oyster shell
    1. (a) XRD pattern, (b) EDS analysis, (c) SEM micrograph and (d) TEM image and SAED pattern of the powders prepared by heating and washing the oyster shell
    XRD patterns of of the synthesized samples
    2. XRD patterns of of the synthesized samples
    SEM micrographs of the hydrothermally synthesized samples
    3. SEM micrographs of the hydrothermally synthesized samples
    TEM and HRTEM images of the hydrothermally synthesized samples
    4. TEM and HRTEM images of the hydrothermally synthesized samples
    Specific surface area of the prepared samples
    5. Specific surface area of the prepared samples
    TG curves of the prepared samples
    6. TG curves of the prepared samples
    SEM micrographs of the samples after degradation
    7. SEM micrographs of the samples after degradation
    ElementCalcined product /(mg·kg-1)Limit/(mg·kg-1)
    Pb<1030
    Cd<1.55
    Hg<15
    As<13
    Table 1. Heavy metal content of the calcined products of oyster shells
    20%HA40%HA60%HA
    Concentration of Ca/(mg·L-1)(19.91±0.72)(20.00±1.08)(20.02±0.52)
    Concentration of P/(mg·L-1)(1.62±0.17)(3.19±0.22)(4.02±0.19)
    Degree of HA transition/%(17.5±0.57)(34.3±1.02)(43.2±0.33)
    Table 2. Ca and P concentrations and HA transition degree of samples
    20%HA40%HA60%HACaCO3
    Degradation time/dConcentration of Ca2+/(mg·L-1)Degradation rate/%Concentration of Ca2+/(mg·L-1)Degradation rate/%Concentration of Ca2+/(mg·L-1)Degradation rate/%Concentration of Ca2+/(mg·L-1)Degradation rate/%
    7(16.13±0.40)8.1(13.39±0.23)6.7(11.61±0.92)5.8(18.93±0.17)9.8
    14(30.26±1.12)15.2(24.02±0.83)12.0(21.62±1.36)10.8(42.70±0.19)22.1
    21(43.20±1.47)21.7(33.40±1.38)16.2(28.11±1.07)14.3(56.41±0.32)29.2
    Table 3. Ca2+ concentration and degradation rate of samples
    Ziyang LIU, Zhen GENG, Zhaoyang LI. Preparing Biomedical CaCO3/HA Composite with Oyster Shell[J]. Journal of Inorganic Materials, 2020, 35(5): 601
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