Hydrothermal synthesis and crystal growth mechanism of hydroxyapatite nanorods

• Main Authors: JIAO Hua, ZHAO Kang, SHI Rui, MA Li-ning, BIAN Tie-rong, TANG Yu-fei
• Format: Article
• Language: zho
• Published: Journal of Materials Engineering 2020-01-01
• Series: Journal of Materials Engineering
• Subjects: hydroxyapatite; nanorod; hydrothermal method; growth mechanism
• Online Access: http://jme.biam.ac.cn/CN/Y2020/V48/I1/136
• ISSN: 1001-4381; 1001-4381

Hydroxyapatite (HA) nanorods were synthesized by hydrothermal process using anhydrous CaCl₂ and (NH₄)₂HPO₄ as raw materials, urea was used as a homogeneous precipitation agent; hexadecyltrimethy ammonium bromide (CTAB) was used as a template agent. Phase composition and microstructure of the products were characterized <i>via</i> X-ray diffractometer (XRD), scanning electron microscope (SEM) and transmission electron microscopy (TEM). The results show that the morphologies of HA nanorods can be controllably fine-tuning by changing the reaction temperature and time. Hexagonal single crystal HA nanorods single structure can be obtained at 120℃ for hydrothermal 12 h, its length is about 0.5-1.0 <i>μ</i>m, diameter is about 15-30 nm. Finally, the role of CTAB was studied by the formation process of nanorods crystalline structure in details, and verified by experiment.