Preparation and characteristics of zinc and strontium co-doped hydroxyapatite whiskers

Zn and Sr ions co-doped hydroxyapatite (Ca₁₀(PO₄)₆(OH)₂, HA) whiskers were synthesized by a hydrothermal homogeneous precipitation method. The morphology, structure and the phase composites of the products were characterized by XRD and SEM. The results showed that Zn²⁺ and Sr²⁺ partially substituted for Ca²⁺ in the HA crystal, resulting in lattice distortion and low crystallinity. When the doping ratio of Zn²⁺ in the solution containing Zn²⁺ and Sr²⁺ was more than 3 mol%, the shorter whiskers with low crystallinity appeared in the products. (paper)