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Synthesis of barium-strontium titanate hollow tubes using Kirkendall effect
Journal of Crystal Growth ( IF 1.8 ) Pub Date : 2018-02-01 , DOI: 10.1016/j.jcrysgro.2017.10.004
Xuncai Chen , SangHyuk Im , Jinsoo Kim , Woo-Sik Kim

Abstract (BaSr)TiO3 hexagonal hollow tubes was fabricated by a solid-state interfacial reaction including a Kirkendall diffusion. Using a co-precipitation and sol-gel process, a core@shell structure of (BaSr)CO3@TiO2 rods were prepared, and then converted to (BaSr)TiO3 hollow tubes at 750 °C. This was a first achievement of single-phase crystal hollow tube. Here, the inner diameter and wall thickness of hollow tube were about 700 nm and 130 nm, respectively. The fabrication of (BaSr)TiO3 hollow tubes was monitored with scanning electron microscopy (SEM), energy-dispersive spectrometry (EDS), transmission electron microscopy (TEM), and X-ray diffraction (XRD) to investigate their formation mechanism. The present synthetic approach would provide a new insight into the design and fabrication of hollow architectures of many perovskite oxides.

中文翻译:

利用柯肯德尔效应合成钛酸锶钡空心管

摘要 (BaSr)TiO3 六方空心管是通过包括柯肯德尔扩散在内的固态界面反应制备的。使用共沉淀和溶胶-凝胶工艺,制备了 (BaSr)CO3@TiO2 棒的核@壳结构,然后在 750°C 下转化为 (BaSr)TiO3 空心管。这是单相晶体空心管的首次成就。这里,中空管的内径和壁厚分别约为 700 nm 和 130 nm。用扫描电子显微镜 (SEM)、能谱仪 (EDS)、透射电子显微镜 (TEM) 和 X 射线衍射 (XRD) 监测 (BaSr)TiO3 空心管的制备,以研究其形成机制。目前的合成方法将为许多钙钛矿氧化物的空心结构的设计和制造提供新的见解。
更新日期:2018-02-01
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