Method for preparing single-wall carbon nano-tube by employing diamond nano particles

Abstract

The invention discloses a process for preparing single-walled carbon nano-tubes, which belongs to the preparing field of nanometer materials. The invention adopts diamond nanometer particles as catalyst or nucleating templates, uses feed gas containing carbons as the growth gas source of carbon nano-tubes, and uses chemical vapor deposition to prepare single-walled carbon nano-tubes in a horizontal resistance furnace. Because the invention adopts diamond nanometer particles as catalysts or nucleating templates to avoid pollution to the single-walled carbon nanotubes caused by non-carbon elements which are brought from adopting any metal catalyst to prepare single-walled carbon nanotubes. The invention has no need to concern about the problem that conventional metal catalysts lose catalytic effect by aggregation, and simultaneously has the advantages of high catalytic efficiency and simple operation.

Description

technical field [0001] The invention relates to a method for preparing single-wall carbon nanotubes by using diamond nanoparticles, belonging to the field of nanomaterial preparation. Background technique [0002] Single-walled carbon nanotubes are a typical one-dimensional nanomaterial. Single-walled carbon nanotubes have excellent physical and electrical properties, so they have great application potential in the establishment of single-walled carbon nanotube-based VLSI and the construction of single-walled carbon nanotube-based nanoelectronic devices. Transistors (FETs) and logic circuits based on single-walled carbon nanotubes have been successfully constructed and demonstrated to have high electrical performance. [0003] The preparation of carbon nanotubes has been developed for more than ten years, and researchers have developed a variety of catalyst materials for the preparation of single-walled carbon nanotubes. These catalyst materials include commonly used monom...

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Problems solved by technology

Metal pollution is also a kind of pollution that needs to be strictly limited in the field of integrated circuit manufacturing ("Semiconductor Manufacturing Technology" Electronic Industry Press, 2005), so single-walled carbon nanotubes contaminated by metal catalysts will not be conducive to the production of single-walled carbon nanotubes. Applications in Nanoelectronic Devices

[0006] Although scholars have developed a variety of methods for removing catalysts in carbon nanotubes (Li, X., etc. Carbon44, 1699-1705 (2006); AuBuchon, J.F., etc. 2005); Lim, H. et al. Jpn.J.Appl.Phys.41, 4686-4688(2002); Huang, W. et al. Carbon 41, 2585-2590(2003)), however even these treatments cannot completely Removal of catalyst particles contained in carbon nanotubes (Pumera, M. et al. Langmuir 23, 6453-6458 (2007))

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