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Role of the carbon source in the transformation of amorphous carbon to graphene during rapid thermal processing

机译：碳源在快速热处理期间在无定形碳转化中的作用

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摘要

A fast transfer-free synthesis of a graphene structure can be successfully achieved by Ni-catalysed transformation of amorphous carbon (a-C) during rapid thermal processing, but the role of the a-C structure in the a-C-to-graphene transformation is still unclear. In this paper, the dependence of the transformation of a-C to graphene, the diffusion behaviour of C, and the graphene quality on the a-C structures was comparatively investigated by reactive molecular dynamics simulation and Ni was selected as a catalyst. The results demonstrated that different a-C structures affected the diffusion of C into Ni layers and the re-dissolving behaviour of the grown graphitic structures, and thus dominated the remnant number of C atoms, which played a critical role in the formation and quality of graphene.
机译：通过在快速热处理期间通过Ni催化的无定形碳（A-C）的Ni催化转化，可以成功地实现快速转移的石墨烯结构的合成，但是A-C结构在A-C--石墨烯转化中的作用尚不清楚。 本文通过反应性分子动力学模拟和Ni作为催化剂，将A-C对石墨烯的转化，C的扩散行为和石墨烯质量的依赖性进行了相对研究的。 结果表明，不同的A-C结构影响了C进入Ni层的扩散和生长的石墨结构的再溶解行为，从而占据了Capare的形成和质量中的临界作用。

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  • 作者

    Li Xiaowei; Zhou Yong; Xu Xiaowei; Wang Aiying; Lee Kwang-Ryeol;

  • 作者单位

    Korea Inst Sci &

    Technol Computat Sci Ctr Seoul 136791 South Korea;

    Chinese Acad Sci Key Lab Marine Mat &

    Related Technol Zhejiang Key Lab Marine Mat &

    Protect Technol Ningbo Inst Mat Technol &

    Engn Ningbo 315201 Zhejiang Peoples R China;

    Chinese Acad Sci Key Lab Marine Mat &

    Related Technol Zhejiang Key Lab Marine Mat &

    Protect Technol Ningbo Inst Mat Technol &

    Engn Ningbo 315201 Zhejiang Peoples R China;

    Chinese Acad Sci Key Lab Marine Mat &

    Related Technol Zhejiang Key Lab Marine Mat &

    Protect Technol Ningbo Inst Mat Technol &

    Engn Ningbo 315201 Zhejiang Peoples R China;

    Korea Inst Sci &

    Technol Computat Sci Ctr Seoul 136791 South Korea;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 物理学;化学;
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