Research Article
Characterization, Dissolution, and Solubility of Zn-Substituted Hydroxylapatites [(ZnxCa1−x)5(PO4)3OH] at 25°C
Table 1
Summary of synthesis and composition of the Zn-substituted hydroxylapatites.
| | Sample number | Volumes of the precursors (mL) | Solid composition | | 0.4 M | 0.4 M | 4.4 M | 0.12 M | | Zn(CH3COO)2·2H2O | Ca(CH3COO)2·H2O | CH3COONH4 | NH4H2PO4 |
| | Zn-Ca-HA-00 | 0 | 250 | 250 | 500 | (Zn0.00Ca1.00)5(PO4)3OH | | Zn-Ca-HA-01 | 5 | 245 | 250 | 500 | (Zn0.02Ca0.98)5(PO4)3OH | | Zn-Ca-HA-02 | 10 | 240 | 250 | 500 | (Zn0.04Ca0.96)5(PO4)3OH | | Zn-Ca-HA-03 | 15 | 235 | 250 | 500 | (Zn0.06Ca0.94)5(PO4)3OH | | Zn-Ca-HA-04 | 20 | 230 | 250 | 500 | (Zn0.08Ca0.92)5(PO4)3OH | | Zn-Ca-HA-05 | 25 | 225 | 250 | 500 | (Zn0.10Ca0.90)5(PO4)3OH | | Zn-Ca-HA-06 | 30 | 220 | 250 | 500 | (Zn0.12Ca0.88)5(PO4)3OH | | Zn-Ca-HA-07 | 35 | 215 | 250 | 500 | (Zn0.14Ca0.86)5(PO4)3OH | | Zn-Ca-HA-08 | 40 | 210 | 250 | 500 | (Zn0.16Ca0.84)5(PO4)3 | | Zn-Ca-HA-09 | 45 | 205 | 250 | 500 | (Zn0.17Ca0.83)5(PO4)3 | | Zn-Ca-HA-10 | 50 | 200 | 250 | 500 | (Zn0.19Ca0.81)5(PO4)3 |
|
|
the forming of ammonium zinc phosphate (NH4ZnPO4).
|
