Hierarchical chrysanthemum-flower-like carbon nanomaterials grown by chemical vapor deposition

Erxiong Ding, Hong Zhang Geng, Jing Wang, Zhi Jia Luo, Guangfen Li, Wen Yi Wang, Lin Ge Li, Hai Jie Yang, Shi Xun Da, Jie Wang, Hua Jiang, Esko Kauppinen

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

Novel hierarchical chrysanthemum-flower-like carbon nanomaterials (CFL-CNMs) were synthesized by thermal chemical vapor deposition based on acetylene decomposition. A scanning electron microscope and a transmission electron microscope were employed to observe the morphology and structure of the unconventional nanostructures. It is found that the CFL-CNMs look like a blooming chrysanthemum with a stem rather than a spherical flower. The carbon flower has an average diameter of 5 μm, an average stem diameter of 150 nm, branch diameters ranging from 20 to 70 nm, and branch lengths ranging from 0.5 to 3 μm. The morphologies of the CFL-CNMs are unlike any of those previously reported. Fishbone-like carbon nanofibers with a spindle-shaped catalyst locating at the tip can also be found. Furthermore, the catalyst split was proposed to elucidate the formation mechanism of CFL-CNMs. A large and glomerate catalyst particle at the tip of the carbon nanofiber splits into smaller catalyst particles which are catalytic-active points for branch formation, resulting in the formation of CFL-CNMs.

Original languageEnglish
Article number085602
Pages (from-to)1-6
JournalNanotechnology
Volume27
Issue number8
DOIs
Publication statusPublished - 26 Jan 2016
MoE publication typeA1 Journal article-refereed

Keywords

  • catalyst split
  • chemical vapor deposition
  • flower-like carbon nanomaterials

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