The Role of Sulfur in the Synthesis of Novel Carbon Morphologies: From Covalent Y-Junctions to Sea-Urchin-Like Structures
The Role of Sulfur in the Synthesis of Novel Carbon Morphologies: From Covalent Y-Junctions to Sea-Urchin-Like Structures
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DOI：
10.1002/adfm.200800931
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发表时间：
2009-04-23
影响因子：
19
通讯作者：
Terrones, Mauricio
中科院分区：
文献类型：
--
作者：
Romo-Herrera, Jose M.;Cullen, David A.;Terrones, Mauricio
利用高分辨电子显微镜/微观分析(扫描电子显微镜、透射电子显微镜、高分辨电子显微镜和能谱分析)进行了详细的表征，揭示了管状碳纳米结构呈现出复杂和迷人的形貌。该材料是通过硫辅助化学气相沉积获得的。结果表明，S不仅作用于催化剂，而且在纳米结构的碳晶格中也能检测到。这里给出的实验数据证实了S的关键作用，他负责诱导曲率，从而影响最终的碳纳米结构形态。特别是制备了不同类型的共价Y型碳纳米管结甚至海胆状纳米结构，并对其实验条件进行了列举和讨论。
A detailed characterization, using high resolution electron microscopy/microanalysis (SEM, TEM, HRTEM, and EDX), reveals tubular carbon nanostructures exhibiting complex and fascinating morphologies. The materials were obtained by sulfur-assisted chemical vapor deposition. It is demonstrated that S not only acts on the catalyst, but also can be detected in the carbon lattice of the nanostructures. The experimental data presented here confirms the critical role of S, which is responsible for inducing curvature and therefore influencing the final carbon nanostructure morphology. In particular, different types of covalent Y-junctions of CNTs and even sea urchin-like nanostructures were produced and their experimental conditions are listed and discussed.