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Pseudo-topotactic conversion of carbon nanotubes to T-carbon nanowires under picosecond laser irradiation in methanol

Author

Listed:
  • Jinying Zhang

    (Xi’an Jiaotong University)

  • Rui Wang

    (Xi’an Jiaotong University)

  • Xi Zhu

    (Nanyang Technological University)

  • Aifei Pan

    (Xi’an Jiaotong University)

  • Chenxiao Han

    (Xi’an Jiaotong University)

  • Xin Li

    (Xi’an Jiaotong University)

  • Dan Zhao

    (Xi’an Jiaotong University)

  • Chuansheng Ma

    (Xi’an Jiaotong University)

  • Wenjun Wang

    (Xi’an Jiaotong University)

  • Haibin Su

    (Nanyang Technological University)

  • Chunming Niu

    (Xi’an Jiaotong University)

Abstract

Pseudo-topotactic conversion of carbon nanotubes into one-dimensional carbon nanowires is a challenging but feasible path to obtain desired diameters and morphologies. Here, a previously predicted but experimentally unobserved carbon allotrope, T-carbon, has been produced from pseudo-topotactic conversion of a multi-walled carbon nanotube suspension in methanol by picosecond pulsed-laser irradiation. The as-grown T-carbon nanowires have the same diameter distribution as pristine carbon nanotubes, and have been characterized by high-resolution transmission electron microscopy, fast Fourier transform, electron energy loss, ultraviolet–visible, and photoluminescence spectroscopies to possess a diamond-like lattice, where each carbon is replaced by a carbon tetrahedron, and a lattice constant of 7.80 Å. The change in entropy from carbon nanotubes to T-carbon reveals the phase transformation to be first order in nature. The computed electronic band structures and projected density of states are in good agreement with the optical absorption and photoluminescence spectra of the T-carbon nanowires.

Suggested Citation

  • Jinying Zhang & Rui Wang & Xi Zhu & Aifei Pan & Chenxiao Han & Xin Li & Dan Zhao & Chuansheng Ma & Wenjun Wang & Haibin Su & Chunming Niu, 2017. "Pseudo-topotactic conversion of carbon nanotubes to T-carbon nanowires under picosecond laser irradiation in methanol," Nature Communications, Nature, vol. 8(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-00817-9
    DOI: 10.1038/s41467-017-00817-9
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