Mixed Low-Dimensional Nanomaterial: 2D Ultranarrow MoS2 Inorganic Nanoribbons Encapsulated in Quasi-1D Carbon Nanotubes
Mixed Low-Dimensional Nanomaterial: 2D Ultranarrow MoS2 Inorganic Nanoribbons Encapsulated in Quasi-1D Carbon Nanotubes
复制标题
混合低维纳米材料：封装在准一维碳纳米管中的二维超窄 MoS2 无机纳米带
DOI：
10.1021/ja1058026
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发表时间：
2010-10-06
影响因子：
15
通讯作者：
Iijima, Sumio
中科院分区：
文献类型：
--
作者：
Wang, Zhiyong;Li, Hong;Iijima, Sumio
准一维纳米管和二维纳米带是纳米结构的两种基本形式，将它们整合成一种新型的混合低维纳米材料是一项具有挑战性的研究。我们合成了一种稳定的混合低维纳米材料，由包裹在碳纳米管中的二硫化钼无机纳米带组成（我们称之为纳米碳纳米管）。该方法可推广到由其他超超过渡金属硫系纳米带和碳纳米管组成的纳米晶体的合成。先前合成的MoS2纳米带的宽度大于50 nm，而封装后的MoS2纳米带的均匀宽度为1-4 nm，层数为1-3，取决于纳米管直径。利用高分辨率透射电子显微镜和密度泛函理论计算，发现二硫化钼纳米带的边缘呈锯齿形。
Quasi-one-dimensional nanotubes and two-dimensional nanoribbons are two fundamental forms of nanostructures, and integrating them into a novel mixed low-dimensional nanomaterial is fascinating and challenging. We have synthesized a stable mixed low-dimensional nanomaterial consisting of MoS2 inorganic nanoribbons encapsulated in carbon nanotubes (which we call nanoburritos). This route can be extended to the synthesis of nanoburritos composed of other ultranarrow transition-metal chalcogenide nanoribbons and carbon nanotubes. The widths of previously synthesized MoS2 ribbons are greater than 50 nm, while the encapsulated MoS2 nanoribbons have uniform widths down to 1-4 nm and layer numbers down to 1-3, depending on the nanotube diameter. The edges of the MoS2 nanoribbons have been identified as zigzag-shaped using both high-resolution transmission electron microscopy and density functional theory calculations.