Tailoring the Morphology of Carbon Nanotube Arrays : From Spinnable Forests to Undulating Foams

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Yingying Zhang
  • Guifu Zou
  • Stephen K. Doorn
  • Han Htoon
  • Liliana Stan
  • Marilyn E. Hawley
  • Chris J. Sheehan
  • Quanxi Jia

Detail(s)

Original languageEnglish
Pages (from-to)2157-2162
Journal / PublicationACS Nano
Volume3
Issue number8
Online published29 Jul 2009
Publication statusPublished - 25 Aug 2009
Externally publishedYes

Abstract

Directly spinning carbon nanotube (CNT) fibers from vertically aligned CNT arrays is a promising way for the application of CNTs in the field of high-performance materials. However, most of the reported CNT arrays are not spinnable. In this work, by controlling catalyst pretreatment conditions, we demonstrate that the degree of spinnability of CNTs is closely related to the morphology of CNT arrays. Shortest catalyst pretreatment time led to CNT arrays with the best spinnability, while prolonged pretreatment resulted in coarsening of catalyst particles and nonspinnable CNTs. By controlling the coalescence of catalyst particles, we further demonstrate the growth of undulating CNT arrays with uniform and tunable waviness. The CNT arrays can be tuned from wellaligned, spinnable forests to uniformly wavy, foam-like films. To the best of our knowledge, this is the first systematical study on the correlation between catalyst pretreatment, CNT morphology, and CNT spinnability. © 2009 American Chemical Society.

Research Area(s)

  • Carbon nanotube, Carbon nanotube catalyst pretreatment, CNT array, Spinnability, Undulating structure

Citation Format(s)

Tailoring the Morphology of Carbon Nanotube Arrays : From Spinnable Forests to Undulating Foams. / Zhang, Yingying; Zou, Guifu; Doorn, Stephen K.; Htoon, Han; Stan, Liliana; Hawley, Marilyn E.; Sheehan, Chris J.; Zhu, Yuntian; Jia, Quanxi.

In: ACS Nano, Vol. 3, No. 8, 25.08.2009, p. 2157-2162.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review