The synthesis of PrB6 nanowires and nanotubes by the self-catalyzed method
The synthesis of PrB6 nanowires and nanotubes by the self-catalyzed method
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自催化法合成PrB6纳米线和纳米管
DOI：
10.1016/j.ceramint.2014.01.046
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发表时间：
2014-07
影响因子：
5.2
通讯作者：
Han Wei
中科院分区：
文献类型：
--
作者：
Chi Mingfeng;Zhao Yanming;Fan Qinghua;Han Wei
以Pr粉和BCl 3为原料，采用无催化剂化学气相沉积（CVD）法成功制备了六硼化镨（PrB 6）纳米线和非晶PrB 6纳米管。采用X射线衍射（XRD）、场发射扫描电子显微镜（FESEM）、透射电子显微镜（TEM）和选区电子衍射（SAED）对样品的形貌、成分和结构进行了表征。结果表明，纳米线为多晶结构，直径为10-100 nm，长度为2-10 μm。此外，我们还首次在实验中获得了PrB 6纳米管。HRTEM和SAED表明PrB 6纳米管为非晶态。提出了PrB 6纳米结构形成的生长机制。
The praseodymium hexaborides (PrB6) nanowires and amorphous PrB6nanotubes were successfully fabricated through a catalyst-free chemical vapor deposition (CVD) process using Pr powders and BCl3as starting materials. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and selected area electron diffraction (SAED) were used to characterize the morphology, composition and structure of the samples. Our results showed that the as-synthesized nanowires were polycrystalline with 10–100 nm in diameter and ~2–10 μm in length. Furthermore, we also obtained PrB6nanotubes for the first time in our experiment. HRTEM and SAED identified that the PrB6nanotubes were amorphous in nature. A growth mechanism was proposed for the formation of the PrB6nanostructure.
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