Atomic Structural Studies on Thin Single-Crystalline Misfit-Layered Nanotubes of TbS-CrS2,The Journal of Physical Chemistry C

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Atomic Structural Studies on Thin Single-Crystalline Misfit-Layered Nanotubes of TbS-CrS2
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2015-08-10 00:00:00 , DOI: 10.1021/acs.jpcc.5b05811
Leela S. Panchakarla ₁ , Luc Lajaunie ₂ , Reshef Tenne ₁ , Raul Arenal _{2,

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Affiliation

Various nanotubes from ternary misfit compounds have been reported in recent years. In the present work, the detailed atomic structure and chemical configuration of misfit-layered nanotubes based on the TbS-CrS₂ are reported. These analyses have been developed via different transmission electron microscopy techniques, including high-resolution scanning transmission electron microscopy, electron diffraction, and electron energy loss spectroscopy. These structural analyses show that two different kinds of nanotubes can be produced: a “regular” nanotube and a “wavy” one. Both kinds of nanotubes show the alternating arrangements of the TbS and CrS₂ subsystems; however, the wavy ones present a nearly periodically deficiency in terbium. In addition to the structural investigation, the chemical analyses have proved that the outer layer of both kinds of nanotubes is composed of the elements Cr and S. All these findings helped to understand the growth mechanism during the sulfurization reaction taking place in the synthesis process.

中文翻译：

TbS-CrS ₂薄单晶错配层状纳米管的原子结构研究。

近年来，已经报道了来自三元失配化合物的各种纳米管。在本工作中，报道了基于TbS-CrS ₂的错配层状纳米管的详细原子结构和化学构型。这些分析是通过不同的透射电子显微镜技术开发的，包括高分辨率扫描透射电子显微镜，电子衍射和电子能量损失光谱。这些结构分析表明，可以生产两种不同类型的纳米管：“常规”纳米管和“波浪状”纳米管。两种纳米管都显示出TbS和CrS ₂的交替排列子系统; 然而，波浪形波浪呈现出近乎周期性的deficiency缺乏。除了结构研究外，化学分析还证明了两种纳米管的外层均由Cr和S元素组成。所有这些发现有助于理解合成过程中发生的硫化反应过程中的生长机理。

更新日期：2015-08-10

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