【摘要】 通过调整反应溶液中Zn/Sr摩尔比和水热反应时间,制备了锌锶替代羟基磷灰石(Zn-Sr-HA)微球。利用光学显微镜、X射线荧光光谱(XRF)、X射线衍射仪(XRD)和场发射扫描电子显微镜(SEM)研究了微球的组成、结构和形貌特征。结果表明,当初始溶液中Zn/Sr摩尔比为3∶2或1∶1、反应温度180℃、反应时间3~4 h时,产物全部由HA微球组成。微球的平均直径约10~20μm,大小均匀、分散性好。随着初始溶液中Zn/Sr摩尔比的增加,HA微球中Zn/Sr摩尔比逐渐增加,晶胞参数a值和c值逐渐减小。更多还原

【Abstract】 Changing Zn/Sr molar ratio and hydrothermal reaction time of the reaction solution,the strontium and zinc substituted hydroxyapatite(Zn-Sr-HA) microspheres were successfully prepared via hydrothermal method. The structure,composition and morphology of microspheres were studied by optical microscopy,X-ray fluorescence spectrometry(XRF),X-ray diffraction(XRD) and field emission scanning electron microscope(SEM). The results show that the products are all composed of HA microspheres when the Zn/Sr molar ratio is 3 ∶ 2 or 1 ∶ 1 in the initial solution at reaction temperature180℃ for 3 h to 4 h. The average diameter of microspheres is about 10 μm to 20 μm,with uniform size and good dispersion. With the increase of the molar ratio of Zn/Sr in the initial solution,the Zn/Sr molar ratio of HA microspheres increase gradually,and the cell parameters a and c values decrease gradually.更多还原