Controllable synthesis of carbon nanomaterials by direct current arc discharge from the inner wall of the chamber

Da Zhang, Kai Ye, Yaochun Yao, Feng Liang, Tao Qu, Wenhui Ma, Bing Yang, Yongnian Dai, Takayuki Watanabe

Research output: Contribution to journalArticle

Abstract

A direct current (DC) has been applied to prepare many carbon nanomaterials, including fullerene, graphene, and carbon nanohorns (CNHs) from inner wall of chamber. However, the growth mechanism of these carbon nanomaterials is not clear. Amorphous spherical carbon nanoparticles (SCNs), the typical ‘dahlia-like’ CNHs, and graphene with the layer numbers of 2–5 were synthesized controllably from the inner wall of the chamber by DC arc discharge method using argon, nitrogen, and hydrogen as buffer gas. Simultaneously, the effect of buffer gas pressure on the morphology of carbon nanomaterials was investigated systematically. Furthermore, the formation mechanism of these carbon nanomaterials by DC arc discharge was also investigated. Given that argon atom was difficult to bond with the carbon cluster, the random bond between carbon clusters contributed to combine into amorphous SCNs; the C–N bond was the key factor in the formation of CNHs, and hydrogen contributes to form graphene sheets by terminating carbon dangling bonds. With increasing the pressure of buffer gas, intense quenching resulted in formation of carbon nanomaterials with high purity. The study on the growth mechanism of carbon nanomaterials in the inner wall of chamber promotes the preparation of carbon nanomaterials controllable by arc discharge method.

LanguageEnglish
Pages278-284
Number of pages7
JournalCarbon
Volume142
DOIs
Publication statusPublished - Feb 1 2019

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High pressure effects
Nanohorns
Carbon clusters
Dangling bonds
Argon
Amorphous carbon
Nanostructured materials
Hydrogen
Hydrogen bonds
Carbon
Graphite
Graphene
Buffers
Gases
Nanoparticles
Fullerenes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

Cite this

Controllable synthesis of carbon nanomaterials by direct current arc discharge from the inner wall of the chamber. / Zhang, Da; Ye, Kai; Yao, Yaochun; Liang, Feng; Qu, Tao; Ma, Wenhui; Yang, Bing; Dai, Yongnian; Watanabe, Takayuki.

In: Carbon, Vol. 142, 01.02.2019, p. 278-284.

Research output: Contribution to journalArticle

Zhang, Da ; Ye, Kai ; Yao, Yaochun ; Liang, Feng ; Qu, Tao ; Ma, Wenhui ; Yang, Bing ; Dai, Yongnian ; Watanabe, Takayuki. / Controllable synthesis of carbon nanomaterials by direct current arc discharge from the inner wall of the chamber. In: Carbon. 2019 ; Vol. 142. pp. 278-284.
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