CVD growth of carbon nanotube films on nickel substrates

Kukovitsky, E. F.; L’vov, S.G.; Sainov, N. A.; Shustov, V. A.

doi:10.1016/s0169-4332(03)00280-0

Cited by 56 publications

(35 citation statements)

References 20 publications

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“…This could reveal that fragmentation of the nickel metal is a necessity to form catalytically active nickel nanoparticles. It was in fact suggested that saturation of nickel subsurface layer by carbon, formation of intermediate unstable phase and its further decay would result in the fragmentation of nickel and formation of nickel nanoparticles [22,27]. In our study, we postulate that this is also true for 650 °C and 700°C samples in our study.…”

Section: Increasing the Nanotubes Density On The Substratessupporting

confidence: 66%

“…There are several reports on the preparation and characterization of carbon nanotubes on metallic substrates [21][22][23]. There are also reports on the discovery of carbon nanowires formed on nickel substrates by Fujita et al [24], and formation of graphite layers during carbon nanotubes growth on Fe-Ni alloy film by Baek et al [25].…”

Section: Introductionmentioning

confidence: 99%

“…There are also reports on the discovery of carbon nanowires formed on nickel substrates by Fujita et al [24], and formation of graphite layers during carbon nanotubes growth on Fe-Ni alloy film by Baek et al [25]. However, either two-step growth process [23] or extreme deposition conditions such as high pressure [21,22]were required in the processes of nanotube growth. Here we report a simple method to directly grow carbon nanotubes on nickel substrate under normal pressure.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

CVD growth of carbon nanotubes directly on nickel substrate

Pan

2005

Materials Letters

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Chemical vapor deposition (CVD) growth of carbon nanotubes directly on nickel substrates was carried out at different temperatures. Effects of temperature on the growth of carbon nanotubes were investigated and the nucleation and growth mechanism of carbon nanotubes at different temperature ranges were also discussed. Based on the growth mechanism of nanotubes, small amount of Fe nanoparticles were deposited on the nickel substrate to introduce more nucleation sites at elevated temperature, and the density of nanotubes on the surface of the substrate was greatly improved.

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Section: Increasing the Nanotubes Density On The Substratessupporting

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

CVD growth of carbon nanotubes directly on nickel substrate

Pan

2005

Materials Letters

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“…E. F.Kukovitsky team of the Kazan Physics-Technical Institute (Russia) developed the technology of synthesis of oriented nanotubes with conical layers (Fig. 3) (Musatov et al, 2001;Kukovitsky et al, 2003). The first stage of the process involves polyethylene pyrolysis in the first oven at a temperature of 600 •C.…”

Section: Manufacturing Techniques For Cnt-based Field-emission Cathodesmentioning

confidence: 99%

Carbon Nanotube Field Emitters

Zhbanov¹,

Pogorelov²,

Chang³

2010

Carbon Nanotubes

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“…However, CNF/CNT synthesis on bulk metal substrates is challenging because the exact dimensions of the catalyst cannot be controlled, and as a result high levels of amorphous carbon may be formed. Several investigators have reported synthesis of CNF/CNT on bulk stainless steel substrates [30][31][32][33][34][35]; however, there are relatively few reports of CNF synthesis on bulk nickel metal substrates such as foams [36][37][38], screens/grids [39], and foils [40][41][42][43]. Pretreatment of the bulk metal has been studied for its effects on CNF/CNT growth.…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanofiber Synthesis within 3-Dimensional Sintered Nickel Microfibrous Matrices: Optimization of Synthesis Conditions

Karwa

Davis

Tatarchuk

2012

Journal of Nanotechnology

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This study focuses on the process of optimization for carbon nanofiber synthesis at the exterior and the interior of 3-dimensional sintered nickel microfibrous networks. Synthesis of carbon nanofibers (CNF) by catalytic decomposition of acetylene (ethyne) was conducted at atmospheric pressure and short reaction times (10 min). Two factors evaluated during the study were (a) CNF quality (observed by SEM and Raman spectroscopy) and (b) rate of reaction (gravimetrically measured carbon yield). Independent optimization variables included redox faceting pretreatment of nickel, synthesis temperature, and gas composition. Faceting resulted in an 8-fold increase in the carbon yield compared to an untreated substrate. Synthesis with varying levels of hydrogen maximized the carbon yield (9.31 mg C/cm 2 catalyst). The quality of CNF was enhanced via a reduction in amorphous carbon that resulted from the addition of 20% ammonia. Optimized growth conditions that led to high rates of CNF deposition preferentially deposited this carbon at the exterior layer of the nickel microfibrous networks (570 • C, 78% H 2 , 20% NH 3 , 2% C 2 H 2 , faceted Ni.). CNF growth within the 3-dimensional nickel networks was accomplished at the conditions selected to lower the gravimetric reaction rate (470 • C, 10% H 2 , 88% N 2 , 2% C 2 H 2 , nonfaceted Ni).

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CVD growth of carbon nanotube films on nickel substrates

Cited by 56 publications

References 20 publications

CVD growth of carbon nanotubes directly on nickel substrate

CVD growth of carbon nanotubes directly on nickel substrate

Carbon Nanotube Field Emitters

Carbon Nanofiber Synthesis within 3-Dimensional Sintered Nickel Microfibrous Matrices: Optimization of Synthesis Conditions

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