Citation: LI Li-Ying, SONG Wen-Hua, CHEN Tie-Hong. Synthesis of Hydroxyapatite Nanoplates by the Hydrothermal Reaction Method with Anionic Amino Acid Surfactant[J]. Acta Physico-Chimica Sinica, 2009, 25(11): 2404-2408. doi: 10.3866/PKU.WHXB20091020
阴离子氨基酸表面活性剂调控下水热合成羟基磷灰石纳米片
利用水热合成方法, 在含有氨基酸结构的阴离子表面活性剂N-酰基十二烷基肌氨酸钠(Sar-Na)的控制下, 合成具有较大长径比(aspect ratio)的片状纳米羟基磷灰石晶体. 采用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线衍射(XRD)和傅立叶变换红外(FTIR)光谱表征, 并分析了合成产物的形貌、结构和组成. 结果表明, 在Sar-Na的调控下合成了长度0.5-1.0 μm、宽约30 nm的片状羟基磷灰石晶体, 其长径比约为20:1. 考察了表面活性剂Sar-Na的用量对羟基磷灰石形貌的影响. 随着Sar-Na的添加及用量的增加, 羟基磷灰石由椭圆形变为长片状, 并且片的两端逐渐变尖. 结果显示了Sar-Na对羟基磷灰石形貌的控制作用, 为合成具有较大长径比的羟基磷灰石纳米片提供了一个新的途径.
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关键词:
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羟基磷灰石
- / 纳米片
- / N-酰基十二烷基肌氨酸钠
- / 形貌
- / 长径比
English
Synthesis of Hydroxyapatite Nanoplates by the Hydrothermal Reaction Method with Anionic Amino Acid Surfactant
By hydrothermal reaction method with the control of anionic amino acid surfactant N-lauroylsarcosine sodium (Sar-Na), single crystal hydroxyapatite (HAP) nanoplates were synthesized and different synthetic conditions were carefully studied. The products were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Fourier transform infrared (FTIR) spectroscopy. Results showed that hydroxyapatite nanocrystals with lengths of 0.5-1.0 μm, a width of 30 nm, and a high aspect ratio (20:1) were obtained. By increasing the concentration of N-lauroylsarcosine sodium, the morphology of the hydroxyapatite varied from oval to plate-like. These results show that N-lauroylsarcosine sodium can induce the formation of hydroxyapatite with different morphologies. The current work provides a new approach to tune the aspect ratio of hydroxyapatite nanoplates.
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Key words:
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Hydroxyapatite
- / Nanoplate
- / N-lauroylsarcosine sodium
- / Morphology
- / Aspect ratio
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