[摘要]采用浸没循环撞击流反应器(SCISR)，通过沉淀法制备了纳米羟基磷灰石，并用X射线衍射、红外光谱、透射电镜对纳米羟基磷灰石进行了表征和形貌分析，结果表明：采用浸没循环撞击流反应器可得到直径15nm、长度50nm~70nm左右，且尺寸分布均匀的纳米羟基磷灰石棒状颗粒。

    [关键词]撞击流；沉淀法；羟基磷灰石；纳米棒状颗粒

    Synthesis of Hydroxyapatite Nano-Rods/Whiskers by Precipitation in Impinging Streams

    Yuan Juna,b,* Wu Yuanb Zheng Qixina aDepartment of Life Science, Huazhong University of Science and Technology; bSchool of Chemical Technology and Pharmaceutics, Wuhan Institute of Technology, Wuhan, People’s Republic of China

    [Abstract] Objedtives To obtain Hydroxyapatite (HAP) nano-rods/whiskers with well-controlled sizes. Methods Hydroxyapatite (HAP) nano-rods/whiskers are prepared by precipitation in the submerged circulative impinging stream reactor (SCISR). Results While pH = 12.5, the dripping time of the di-ammonia phosphate solution is 54mL•min-1 and the stirring rate is 1200r.min-1, the uniform sized hydroxyapatite nano-whiskers with the size of 15nm in diameter and 50nm~70nm in length can be obtained in SCISR. Conclusions The submerged circulative impinging stream reactor (SCISR) is especially suitable for the preparation of ultrafine particles by reaction-precipitation and exhibits very well performance. ......