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首页> 外文期刊>Journal of Electron Microscopy >Characterization of hollow hydroxyapatite/copper microspheres prepared from the reduction of copper-modified hydroxyapatite by glucose.
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Characterization of hollow hydroxyapatite/copper microspheres prepared from the reduction of copper-modified hydroxyapatite by glucose.

机译：由葡萄糖还原铜改性的羟基磷灰石制备的空心羟基磷灰石/铜微球的表征。

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摘要

This study employed a co-precipitation method to synthesize copper-modified hydroxyapatite (HA) powders, where Cu(2+) ions had entered the structure of HA and occupied Ca(1) sites in the columns parallel to the c-axis. Through a hydrothermal treatment, hollow HA/copper (Cu(2)O and/or Cu) microspheres with core-shell structures were prepared in solutions containing glucose, sodium carbonate and sodium citrate. When prolonging the reduction time, Cu(2+) ions dissolved from copper-modified HA were reduced by glucose initially to Cu(+) ions and then to Cu atoms, which would precipitate as copper on the surface of HA. The formation of microspheres with hollow structures was explained by the Kirkendall effect which states that diffusion behaviors of ions were different for HA and copper precipitations. Hybrid HA/copper powders might find their applications in gas sensors, catalysts, electrodes and so on.
机译：这项研究采用共沉淀法合成铜改性的羟基磷灰石（HA）粉末，其中Cu（2+）离子进入HA结构并在平行于c轴的列中占据Ca（1）位置。通过水热处理，在包含葡萄糖，碳酸钠和柠檬酸钠的溶液中制备了具有核-壳结构的空心HA /铜（Cu（2）O和/或Cu）微球。当延长还原时间时，从铜修饰的HA溶解的Cu（2+）离子首先被葡萄糖还原为Cu（+）离子，然后还原为Cu原子，这些原子将以铜的形式沉淀在HA表面。 Kirkendall效应解释了具有空心结构的微球的形成，该效应说明离子的扩散行为对于HA和铜沉淀是不同的。混合HA /铜粉可能会在气体传感器，催化剂，电极等中找到其应用。

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