Ion-implantation-prepared catalyst nanoparticles for growth of carbon nanotubes

Adhikari, Ananta Raj; Huang, Mingxian; Wu, Dong Yang; Dovidenko, K.; Wei, Bingqing; Vajtai, Róbert; Ajayan, Pulickel M.

doi:10.1063/1.1856699

Cited by 24 publications

(16 citation statements)

References 21 publications

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“…A variety of techniques -both physical and chemical -have been used to prepare nanoparticles, nanowires, nanobelts, etc. [9][10][11][12][13]. Silicate glasses have a structure consisting of a lot of physically void spaces.…”

Section: Introductionmentioning

confidence: 99%

Optical properties of nanocomposites with iron core–iron oxide shell structure

Basu

Chakravorty

2006

Journal of Non-Crystalline Solids

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Section: Introductionmentioning

confidence: 99%

Optical properties of nanocomposites with iron core–iron oxide shell structure

Basu

Chakravorty

2006

Journal of Non-Crystalline Solids

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“…[4][5][6] However, the growth of single-walled nanotubes from ion implanted catalyst nanoparticles has not yet been demonstrated. In this letter, we present experimental evidence that single-walled carbon nanotubes can indeed be produced by the process of Fe ion implantation into thermally grown SiO 2 layers, subsequent annealing, and CVD growth.…”

mentioning

confidence: 99%

Single-walled carbon nanotube growth from ion implanted Fe catalyst

Choi

Sippel-Oakley

Ural

2006

Applied Physics Letters

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The authors present experimental evidence that single-walled carbon nanotubes can be grown by chemical vapor deposition from ion implanted iron catalyst. They systematically characterize the effect of ion implantation dose and energy on the catalyst nanoparticles and nanotubes formed at 900°C. They also fabricate a micromachined silicon grid for direct transmission electron microscopy characterization of the as-grown nanotubes. This work opens up the possibility of controlling the origin of single-walled nanotubes at the nanometer scale and of integrating them into nonplanar three-dimensional device structures with precise dose control.

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“…An enlarged view of the tungsten peaks is shown in the inset. The horizontal scale above the peaks indicates the depth calculated on the assumption that the density of implanted GC would increase from 1.51 (normal) [11] to 2.2 g/cm 3 due to compaction by ion-beam-induced modifications [8].…”

Section: Results and Discussion 31 Rbsmentioning

confidence: 99%

“…Nanoparticle preparation by ion implantation in a ceramic oxide substrate such as silica and alumina has been studied mostly for optical applications [2] and chemical catalysis [3]. In regard to application in electrochemical devices such as fuel cells, batteries, and sensors, the nanoparticles must be prepared on an electrically conductive substrate because charge transfer needs to occur.…”

Section: Introductionmentioning

confidence: 99%

Nanoparticle Formation by Tungsten Ion Implantation in Glassy Carbon

Kato

Yamaki

Yamamoto

et al. 2013

Trans. Mat. Res. Soc. Japan

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Nanoparticles were formed by 100-keV tungsten-ion implantation in unpolished glassy carbon substrates at different fluences. The implanted samples were analyzed by Rutherford backscattering spectrometry, X-ray photoelectron spectroscopy, hydrodynamic voltammetry using a rotating disk electrode, and field emission scanning electron microscopy. A significant sputtering effect changed the depth profile during the course of irradiation and limited the amount of tungsten that could be retained on the substrate, which saturated at a fluence of around 6 × 10 16 ions/cm 2 . The observed depth-profile change and saturation can be explained quantitatively by the calculated sputtering yield. The nanoparticles of tungsten carbides with diameters of around 16 nm were dispersed uniformly on the surface.

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Ion-implantation-prepared catalyst nanoparticles for growth of carbon nanotubes

Cited by 24 publications

References 21 publications

Optical properties of nanocomposites with iron core–iron oxide shell structure

Optical properties of nanocomposites with iron core–iron oxide shell structure

Single-walled carbon nanotube growth from ion implanted Fe catalyst

Nanoparticle Formation by Tungsten Ion Implantation in Glassy Carbon

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