In Situ Electron Driven Carbon Nanopillar-Fullerene Transformation through Cr Atom Mediation
In Situ Electron Driven Carbon Nanopillar-Fullerene Transformation through Cr Atom Mediation
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通过 Cr 原子介导的原位电子驱动碳纳米柱-富勒烯转化
DOI：
10.1021/acs.nanolett.7b01406
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发表时间：
2017
期刊：
影响因子：
10.8
通讯作者：
Rummeli Mark H.
中科院分区：
文献类型：
--
作者：
Zhao Liang;Ta Huy Q.;Dianat Arezoo;Soni Akash;Fediai Artem;Yin Wajian;Gemming Thomas;Trzebicka Barbara;Cuniberti Gianaurelio;Liu Zhongfan;Bachmatiuk Alicja;Rummeli Mark H.
sp2纳米材料的前景仍然是巨大的，战略性地联合收割机和操纵这些纳米结构的方法将进一步提高它们的潜力，以及推进纳米技术作为一个整体。这些结构的尺度要求在原子尺度上的精确度。在这个意义上，电子显微镜是有吸引力的，因为它们提供了原子成像和结构修改结构的手段。在这里，我们展示了如何铬原子可以作为物理连接器连接碳纳米管和富勒烯石墨烯。至关重要的是，在电子照射下，Cr原子可以驱动转化，例如催化修复石墨烯中的孔，同时将单壁碳纳米管转化为富勒烯。原子分辨率的电子显微镜沿着与密度泛函理论为基础的总能量计算提供了深入了解铬原子链接的动态转换。这项工作增强了透射电子显微镜作为纳米实验室的潜力。
The promise of sp2nanomaterials remains immense, and ways to strategically combine and manipulate these nanostructures will further enhance their potential as well as advance nanotechnology as a whole. The scale of these structures requires precision at the atomic scale. In this sense electron microscopes are attractive as they offer both atomic imaging and a means to structurally modify structures. Here we show how Cr atoms can be used as physical linkers to connect carbon nanotubes and fullerenes to graphene. Crucially, while under electron irradiation, the Cr atoms can drive transformations such as catalytic healing of a hole in graphene with simultaneous transformation of a single wall carbon nanotube into a fullerene. The atomic resolution of the electron microscopy along with density functional theory based total energy calculations provide insight into the dynamic transformations of Cr atom linkers. The work augments the potential of transmission electron microscopes as nanolaboratories.