Synthesis and growth mechanism of metal filled carbon nanostructures by CVD using Ni/Y catalyst supported on copper

Kang, Jianli; Li, J.J.; Du, Xi‐Wen; Shi, Chunsheng; Zhao, Naiqin; Cui, Lan; Nash, Philip

doi:10.1016/j.jallcom.2007.02.078

Cited by 38 publications

(20 citation statements)

References 26 publications

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“…Normally, carbon atoms diffuse into the metal, dissolve in it and form saturated metal carbides which lower the melting point of that particular metal. The formation of a fluid-like nature of the metal paves the way for easy encapsulation due to the capillary action of nanotubes [43,46,47]. As per previous records [30], diffusion of carbon atoms into platinum is very low, particularly at the working temperature of our experiment (around 700°C), and the solubility of carbon occurs only above 900°C [48].…”

Section: Resultssupporting

confidence: 81%

“…The metal catalysts encapsulated within a tube are in both spherical and elongated forms and these catalytic particles within a tube may not be formed from the fragmentation of large particles. Instead, we suspect that two metal nanoparticles at the nearest juncture encapsulated by onion-like structures may have coalesced and formed a tube, similar to the mechanism proposed by Kang et al [43].…”

Section: Resultssupporting

confidence: 69%

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Effect of Pt and Fe catalysts in the transformation of carbon black into carbon nanotubes

Asokan

Myrseth

Kosinski

2015

Journal of Physics and Chemistry of Solids

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a b s t r a c tIn this research carbon nanotubes and carbon nano onion-like structures were synthesized from carbon black using metal catalysts at 400°C and 700°C. Platinum and iron-group metals were used as catalysts for the transformation of CB into graphitized nanocarbon and the effect of both metals was compared. The synthesized products were characterized using X-ray diffraction (XRD), transmission electron microscope (TEM), high resolution transmission electron microscope (HRTEM) and Raman spectroscopy. The characterization shows that this process is very efficient in the synthesis of high quality graphitized products from amorphous carbon black, even though the process temperature was relatively low in comparison with previous studies. Distinguished graphitic walls of the newly formed carbon nanostructures were clearly visible in the HRTEM images. Possible growth difference related to the type of catalyst used is briefly explained with the basis of electron vacancies in d-orbitals of metals.

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Section: Resultssupporting

confidence: 81%

Section: Resultssupporting

confidence: 69%

Effect of Pt and Fe catalysts in the transformation of carbon black into carbon nanotubes

Asokan

Myrseth

Kosinski

2015

Journal of Physics and Chemistry of Solids

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“…(2008), in which synthesis of a single crystal diamond is presented using diamond seed particles electroplated with nickel fi lm as a catalyst for the HPHT method. Moreover, Ni, Co and Y are commonly used as catalysts for the growth of carbon nanotubes (Kang et al , 2008;Hsieh et al , 2009).…”

Section: Ultrasonic Seeding With the Assistance Of Non-diamond Particlesmentioning

confidence: 99%

Diamond nucleation and seeding techniques for tissue regeneration

Kromka

Babchenko

Potocký

et al. 2013

Diamond-Based Materials for Biomedical Applications

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“…6d). It has been suggested that the metal particle present in the core of the nanosphere is under pressure and is forced to escape leaving an empty core [6]. The carbon layers then close to form hollow nanospheres.…”

Section: Hrtem Analysismentioning

confidence: 99%

“…During the decomposition of hydrocarbons, carbon deposition also takes place [3,4]. Over the years, a number of studies of the structural and morphological characteristics of such carbon have been undertaken with the primary aim of determining the mechanism of its formation [5][6][7][8]. The carbon filaments which are often reported to be formed have a number of potential applications such as adsorbents, catalyst supports and reinforcement materials [9][10][11].…”

Section: Introductionmentioning

confidence: 99%