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Large-scale and fast synthesis of nano-hydroxyapatite powder by a microwave-hydrothermal method

机译：微波-水热法大规模快速合成纳米羟基磷灰石粉

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A microwave-hydrothermal (M-H) method assisted with ultrasonic atomization precipitation was developed for large-scale and fast synthesis of nano-hydroxyapatite (nano-HAP) powder. This technology combines the uniform mixing effect of ultrasonic atomization precipitation at high concentration with the rapid and uniform heating effect of the M-H method, aiming to obtain a high quality product with low agglomeration, homogeneous size distribution, accurate stoichiometry, and high purity while improving the yield. The influences of reaction temperature, reaction time and reactant concentration on the formation of nano-HAP were investigated. The results show that the crystallinity increases significantly and the diameter of nano-HAP increases to some extent, but the length does not change obviously while the reaction temperature increase from 60 °C to 160 °C and the reaction time increases from 1 minute to 40 minutes respectively. The crystallinity, dispersion and crystal size of nano-HAP do not change obviously while the concentration of Na _(2) HPO _(4) ·12H _(2) O increases from 0.06 mol L ~(?1) to 0.4 mol L ~(?1) . When the reaction temperature is 160 °C, the reaction time is 40 min, and the concentration of Na _(2) HPO _(4) ·12H _(2) O is 0.4 mol L ~(?1) , the yield of nano-HAP powder achieved a maximum yield (0.033 kg L ~(?1) ). The obtained nano-HAP powder exhibits a uniform size and good dispersibility, with a size of 87.62 ± 22.44 nm and crystallinity of 0.92, respectively. This study indicates that the M-H method assisted with ultrasonic atomization precipitation is a facile one-pot method for the rapid and large-scale synthesis of highly crystalline, dispersible nano-HAP particles.
机译：微波-水热（M-H）辅助超声雾化沉淀的发展为大规模和快速合成纳米羟基磷灰石（纳米-HAP）粉末。该技术将高浓度超声雾化沉淀的均匀混合效果与MH方法的快速，均匀加热效果相结合，旨在获得具有低团聚，均匀粒度分布，准确化学计量和高纯度的高质量产品，同时改善了让。研究了反应温度，反应时间和反应物浓度对纳米HAP形成的影响。结果表明，当反应温度从60°C升高到160°C，反应时间从1分钟增加到40°C时，纳米HAP的结晶度明显增加，纳米HAP的直径有所增加，但长度没有明显变化。分钟。 Na_（2）HPO _（4）·12H _（2）O的浓度从0.06 mol L〜（？1）增加到0.4 mol L，纳米HAP的结晶度，分散度和晶体尺寸没有明显变化。 〜（？1）。当反应温度为160°C时，反应时间为40分钟，Na _（2）HPO _（4）·12H _（2）O的浓度为0.4 mol L〜（？1），纳米HAP粉末达到最大产量（0.033kg L·（Δ1））。所获得的纳米HAP粉末具有均匀的尺寸和良好的分散性，尺寸分别为87.62±22.44nm和结晶度为0.92。这项研究表明，M-H方法辅助超声雾化沉淀是一种快速，大规模合成高度结晶，可分散的纳米HAP颗粒的简便一锅法。

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