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首页> 外文期刊>Crystal growth & design >Fabrication of Octahedral-Shaped Polyol-Based Zinc Alkoxide Particles and Their Conversion to Octahedral Polycrystalline ZnO or Single-Crystal ZnO Nanoparticles
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Fabrication of Octahedral-Shaped Polyol-Based Zinc Alkoxide Particles and Their Conversion to Octahedral Polycrystalline ZnO or Single-Crystal ZnO Nanoparticles

机译：八面体形多元醇基氧化锌锌粒子的制备及其转化为八面体多晶ZnO或单晶ZnO纳米粒子

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摘要

An ultrasonically assisted two-step polyol process was established to prepare a novel ethylene glycol-based zinc alkoxide with octahedral morphology. The octahedral-shaped zinc alkoxide particles Could be converted to ZnO by heating to 350 degrees C or above, without altering the octahedral shape. Interestingly, when exposed to atmospheric Moisture at room temperature for more than 48 h, the octahedral zinc alkoxide was in situ transformed to single-crystal ZnO nanoparticles via hydrolysis in the octahedral configuration, accompanied by release of ethylene glycol. The morphology, composition, and phase structure of the glycol-based zinc alkoxide and the resulting products, i.e., octahedral ZnO polycrystalline particles and single-crystal ZnO nanoparticles, were characterized by means of scanning electron microscopy (SEM), Fourier transformation infrared spectrometry (FTIR), X-ray diffraction (XRD), thermal analysis (TA), elemental analysis (EA), and transmission electron microscopy (TEM). The present approach for octahedral polycrystalline ZnO or spherical single-crystal ZnO nanoparticles would provide a potential facile route to fabricating other metal oxides with controllable morphology. The hydrolysis of the octahedral zinc alkoxide might be used to facilitate slow release of ethylene glycol, a common compound for lowering freezing point.
机译：建立了超声辅助两步多元醇工艺，以制备具有八面体形态的新型乙二醇基醇锌。八面体形的醇锌锌颗粒可以通过加热到350摄氏度或更高温度而转化为ZnO，而不会改变八面体的形状。有趣的是，当在室温下暴露于大气水分超过48小时时，八面体烷氧基锌通过八面体构型的水解原位转化为单晶ZnO纳米颗粒，并释放出乙二醇。通过扫描电子显微镜（SEM），傅立叶变换红外光谱（）表征乙二醇基醇锌锌及其生成的产物（即八面体ZnO多晶颗粒和单晶ZnO纳米颗粒）的形态，组成和相结构。 FTIR），X射线衍射（XRD），热分析（TA），元素分析（EA）和透射电子显微镜（TEM）。八面体多晶ZnO或球形单晶ZnO纳米粒子的本方法将为制造具有可控形态的其他金属氧化物提供潜在的简便途径。八面体醇锌的水解可用于促进乙二醇的缓慢释放，乙二醇是降低冰点的常用化合物。

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