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首页> 外文期刊>Acta Crystallographica, Section B. Structural Science >Structure analysis of titanate nanorods by automated electron diffraction tomography
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Structure analysis of titanate nanorods by automated electron diffraction tomography

机译：钛酸酯纳米棒的自动电子衍射层析成像结构分析

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摘要

A hitherto unknown phase of sodium titanate, NaTi3O6(OH)·2H2O, was identified as the intermediate species in the synthesis of TiO2 nanorods. This new phase, prepared as nanorods, was investigated by electron diffraction, X-ray powder diffraction, thermogravimetric analysis and high-resolution transmission electron microscopy. The structure was determined ab initio using electron diffraction data collected by the recently developed automated diffraction tomography technique. NaTi3O6(OH)·2H2O crystallizes in the monoclinic space group C2/m. Corrugated layers of corner- and edge-sharing distorted TiO6 octahedra are intercalated with Na+ and water of crystallization. The nanorods are typically affected by pervasive defects, such as mutual layer shifts, that produce diffraction streaks along c*. In addition, edge dislocations were observed in HRTEM images.
机译：钛酸钠迄今未知的相NaTi3O6（OH）·2H2O被确定为TiO2纳米棒合成的中间物种。通过电子衍射，X射线粉末衍射，热重分析和高分辨率透射电子显微镜研究了制备为纳米棒的这一新相。从头开始使用最近开发的自动衍射层析成像技术收集的电子衍射数据确定结构。 NaTi3O6（OH）·2H2O在单斜空间群C2 / m中结晶。角和边缘共享变形的TiO6八面体的波纹层插入了Na +和结晶水。纳米棒通常受到普遍缺陷的影响，例如相互的层移位，这些缺陷会沿c *产生衍射条纹。另外，在HRTEM图像中观察到边缘错位。

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