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首页> 外文期刊>Nanoscience and Nanoengineering >Synthesis of a Hydroxyapatite Nanopowder via Ultrasound Irradiation from Calcium Hydroxide Powders for Potential Biomedical Applications
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Synthesis of a Hydroxyapatite Nanopowder via Ultrasound Irradiation from Calcium Hydroxide Powders for Potential Biomedical Applications

机译：潜在的生物医学应用氢氧化钙粉末的超声辐射合成羟基磷灰石纳米粉。

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Nanoscale hydroxyapatite based ceramics are a relatively new form of materials that are currently being investigated for a number of potential biomedical applications. This study reports on a straightforward wet chemical method that uses calcium hydroxide and phosphoric acid as precursors. After chemical synthesis a conventional thermal treatment was used to produce an ultrafine hydroxyapatite nanopowder. Varying ultrasonic power between zero and 400 W during the synthesis process produced crystallite sizes ranging from 15.4 nm down to 12.2 nm. The morphology of particles synthesized under the influence of ultrasonic irradiation was predominantly spherical and granular. Also present were a small number of irregular shaped plates. Energy dispersive spectroscopy revealed the samples had a Ca:P ratio of 1.66, which was very close to the ideal value of 1.67. FT-IR studies identified functional groups and confirmed the results of the X-ray diffraction data that the powders were indeed composed of nanoscale hydroxyapatite.
机译：纳米级羟基磷灰石基陶瓷是一种相对较新的材料形式，目前正在研究其用于许多潜在的生物医学应用。这项研究报告了一种简单的湿化学方法，该方法使用氢氧化钙和磷酸作为前体。化学合成后，常规热处理用于生产超细羟基磷灰石纳米粉。在合成过程中，超声波功率在0至400 W之间变化，产生的微晶尺寸范围为15.4 nm至12.2 nm。在超声辐射的影响下合成的颗粒的形态主要是球形和颗粒状。还存在少量不规则形状的板。能量色散光谱法显示样品的Ca：P比为1.66，非常接近理想值1.67。 FT-IR研究确定了官能团，并证实了X射线衍射数据的结果是粉末确实由纳米羟基磷灰石组成。

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