Vertically aligned N-doped carbon nanotubes by spray pyrolysis of turpentine oil and pyridine derivative with dissolved ferrocene

Ghosh, Pradip; Soga, Tetsuo; Ghosh, Kaushik; Afre, Rakesh A.; Jimbo, Takashi; Ando, Yoshinori

doi:10.1016/j.jnoncrysol.2008.05.053

Cited by 37 publications

(20 citation statements)

References 34 publications

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“…Boron and nitrogen are among the most effective dopants because of their small atomic size similar to that of the carbon atom. They thus have a reasonable probability of entering a nanotube lattice (Iijima 1991;Villalpando-Paez et al 2006;Sumpter et al 2007;Ghosh et al 2008a;Koós et al 2009). In particular, the substitutional doping of nitrogen has received attention because significant changes in hardness, electrical conductivity, and chemical reactivity of CNTs have been theoretically predicted and experimentally observed in the doped carbon (Maldonado et al 2006).…”

Section: N-cntsmentioning

confidence: 99%

“…To overcome this difficulty of using ammonia, precursors containing both carbon and nitrogen have been used. Ghosh et al (Ghosh et al 2008a) obtained highly aligned bambooshaped CNTs by the catalytic pyrolysis of monoethanolomine/ferrocene mixtures over the temperature range 700°-900°C by a CVD method. During the deposition, monoethanolomine decomposed to form ammonia, which is very effective for the growth of N-CNTs.…”

Section: Synthesis Of N-cntsmentioning

confidence: 99%

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Nitrogen-doped carbon nanotubes as a metal catalyst support

et al. 2011

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The science and technology of catalysis is of fundamental importance to a national economy. Today about 90% of all technical chemicals are manufactured by the use of catalysts. Nanoparticles of noble metals are extremely important materials in the catalysis industry due to cost issues and properties that are not found in their bulk state. An efficient way to produce and stabilise noble metal nanoparticles is by dispersion on a suitable support. Carbon-based supports, such as carbon nanotubes, carbon spheres, carbon fibres, etc., have been found to be good supports for metal nanoparticles. However, to be used effectively, the carbon surface must be modified either by functionalisation or doping. This review discusses the synthesis and the possible applications of nitrogen-doped carbon nanotubes as supports for metal nanoparticles in heterogeneous catalysis.

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Section: N-cntsmentioning

confidence: 99%

Section: Synthesis Of N-cntsmentioning

confidence: 99%

Nitrogen-doped carbon nanotubes as a metal catalyst support

et al. 2011

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“…Recently, Paul and Samdarshi [14] reported that the diameters of a random-orientation CNTs of around 80-90 nm were obtained when coconut oil was used as the carbon precursor. Similarly, turpentine oil was also used by Ghosh et al to synthesize VACNTs with a diameter of 7-30 nm [15]. In this work, the surface morphology study showed that the smallest diameter obtained was around 2 nm when PO was used as the carbon precursor, and that it possessed a higher graphitic-to-defect ratio, when compared with other methods previously reported.…”

Section: Resultsmentioning

confidence: 53%

Raman Spectroscopic Study of Carbon Nanotubes Prepared Using Fe/ZnO‐Palm Olein‐Chemical Vapour Deposition

Zobir

Bakar

Abdullah

et al. 2012

Journal of Nanomaterials

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Multiwalled carbon nanotubes (MWCNTs) were synthesized using Fe/ZnO catalyst by a dual-furnace thermal chemical vapor deposition (CVD) method at 800–1000°C using nitrogen gas with a constant flow rate of 150 sccm/min as a gas carrier. Palm olein (PO), ferrocene in the presence of 0.05 M zinc nitrate, and a p-type silicon wafer were used as carbon source, catalyst precursor, and sample target, respectively. D, G, and G′bands were observed at 1336–1364, 1559–1680, and 2667–2682 cm-1, respectively. Carbon nanotubes (CNTs) with the highest degree of crystallinity were obtained at around8000°C, and the smallest diameter of about 2 nm was deposited on the silicon substrate at1000°C.

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“…1) reveals four prominent bands: D, G, 2D and D + G bands. The D and G bands can be observed at 1343 and 1582 cm À1 , respectively, due to defects and graphite, respectively with an I G /I D value obtained was 1.0 [3][4][5]. The former is usually associated with the impurities that destroy the graphitic symmetry, while the latter represents the splitting of the E 2g stretching mode for the graphite [6,7].…”

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confidence: 92%

“…It was found that carbon nanostructures are useful for various applications from electronics to medical applications and from simple to complex applications. This is due to their superior properties compared with their counterpart in the bulk form [3,4].…”

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confidence: 99%