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以四水合硝酸钙和五氧化二磷为原料,无水乙醇为溶剂,采用溶胶-凝胶法制备了含CO32-的羟基磷灰石(hydroxyapatite,HAP)粉体。采用热重-差热分析、X射线衍射、透射电子显微镜、Fourier变换红外光谱等研究了反应体系pH值、反应温度及前驱体热处理温度等因素对产物结构与性能的影响规律,结果表明:采用溶胶-凝胶工艺,调控反应体系的pH、反应温度及前驱体的热处理温度是获得纯度高、分散性较好的纳米HAP粉体的关键。pH值为8.0、反应温度为30℃,经600℃热处理可获得到粒径为40～50nm的HAP纳米粉体。
Abstract：The nano-sized hydroxyapatite(HAP) powder was synthesized with Ca(NO3)2?4H2O and P2O5 by a sol-gels process.The effects of pH value of solvent,reaction temperature and heated temperature on the crystallinity and morphology of nano-sized HAP were investigated by thermogravimetric/differential thermal analyzer,X-ray diffraction,transmission electron microscopy and Fourier transform infrared spectroscopy,respectively.The nano-particles of HAP with a higher crystallinity and a good disparity could be controlled via the adjustment of the process parameters such as reaction temperature,pH value of solution and heat treatment tem-perature.The results show that the nano-particles of HAP containing CO32- with the good crystallinity and the particle sizes of 40-50 nm could be obtained at the reaction temperature of 30 ℃,the pH value of 8 and the heat treatment temperature of 600 ℃.
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基本信息:
DOI：10.14062/j.issn.0454-5648.2012.02.014
中图分类号:R318.08
引用信息:
[1]徐晓虹,吴建锋,华全,等.溶胶-凝胶法制备纳米羟基磷灰石粉体[J].硅酸盐学报,2012,40(02):266-270.DOI:10.14062/j.issn.0454-5648.2012.02.014.
2012-01-06
2012-01-06
2012-01-06