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Continuous flow chemical vapour deposition of carbon nanotube sea urchins

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Abstract

Hybrid structures consisting of functional materials enhanced by carbon nanotubes (CNTs) have potential for a variety of high impact applications, as shown by the impressive progress in sensing and mechanical applications enabled by CNT-enhanced materials. The hierarchical organisation of CNTs with other materials is key to the design of macroscale devices benefiting from the unique properties of individual CNTs, provided CNT density, morphology and binding with other materials are optimized. In this paper, we provide an analysis of a continuous aerosol process to create a hybrid hierarchical sea urchin structure with CNTs organized around a functional metal oxide core. We propose a new mechanism for the growth of these carbon nanotube sea urchins (CNTSU) and give new insight into their chemical composition. To corroborate the new mechanism, we examine the influence of CNT growth conditions on CNTSU morphology and demonstrate a new in-line characterisation technique to continuously monitor aerosol CNT growth during synthesis, which enables industrial-scale production optimization. Based upon the new formation mechanism we describe the first substrate-based chemical vapour deposition growth of CNTSUs which increases CNT length and improves G to D ratio, which also allows for the formation of CNTSU carpets with unique structures.

Graphical abstract: Continuous flow chemical vapour deposition of carbon nanotube sea urchins

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Publication details

The article was received on 21 Dec 2017, accepted on 06 Mar 2018 and first published on 17 Apr 2018


Article type: Paper
DOI: 10.1039/C7NR09534A
Citation: Nanoscale, 2018, Advance Article
  • Open access: Creative Commons BY license
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    Continuous flow chemical vapour deposition of carbon nanotube sea urchins

    J. de La Verpilliere, S. Jessl, K. Saeed, C. Ducati, M. De Volder and A. Boies, Nanoscale, 2018, Advance Article , DOI: 10.1039/C7NR09534A

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