A comparative study of hydroxyapatite (Ca-10(PO4)(6)(OH)(2)) using sol-gel and co-precipitation methods for biomedical applications

摘要

In this present paper, nano HAp is synthesized by sol-gel and co-precipitation method for the application of medical field. During synthesis, the different chemical precursors like calcium nitrate tetrahydrate and diammonium hydrogen phosphate are mixed in the ratio of 1:67 ratio and ammonia solution is added to maintain the pH of 10. The synthesis of HAp powders is confirmed by Powder XRD, FT-IR, SEM and TEM. The average crystallite size for the maximum intensity peaks was found to be approximately 20 to 35 nm. The FT-IR spectrum shows that there is a presence of phosphate group at 605-634 cm(-1). Particle size and morphological studies were established using SEM like sphere shaped, rod-shaped, agglomerated rod-shaped morphology was observed. The chemical compositions are also identified using EDAX analysis. Rod-shaped morphology was observed using TEM.