Journal ArticleDOI
Helical microtubules of graphitic carbon
TLDR
Iijima et al. as mentioned in this paper reported the preparation of a new type of finite carbon structure consisting of needle-like tubes, which were produced using an arc-discharge evaporation method similar to that used for fullerene synthesis.Abstract:
THE synthesis of molecular carbon structures in the form of C60 and other fullerenes1 has stimulated intense interest in the structures accessible to graphitic carbon sheets. Here I report the preparation of a new type of finite carbon structure consisting of needle-like tubes. Produced using an arc-discharge evaporation method similar to that used for fullerene synthesis, the needles grow at the negative end of the electrode used for the arc discharge. Electron microscopy reveals that each needle comprises coaxial tubes of graphitic sheets, ranging in number from 2 up to about 50. On each tube the carbon-atom hexagons are arranged in a helical fashion about the needle axis. The helical pitch varies from needle to needle and from tube to tube within a single needle. It appears that this helical structure may aid the growth process. The formation of these needles, ranging from a few to a few tens of nanometres in diameter, suggests that engineering of carbon structures should be possible on scales considerably greater than those relevant to the fullerenes. On 7 November 1991, Sumio Iijima announced in Nature the preparation of nanometre-size, needle-like tubes of carbon — now familiar as 'nanotubes'. Used in microelectronic circuitry and microscopy, and as a tool to test quantum mechanics and model biological systems, nanotubes seem to have unlimited potential.read more
Citations
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Journal ArticleDOI
Removal of cadmium from aqueous solutions by oxidized and ethylenediamine-functionalized multi-walled carbon nanotubes
Goran Vukovic,Aleksandar D. Marinković,Miodrag Čolić,Mirjana Ristić,Radoslav Aleksić,Aleksandra A. Perić-Grujić,Petar S. Uskoković +6 more
TL;DR: In this article, surface functionalization of multi-walled carbon nanotubes (MWCNTs) by ethylenediamine, via chemical modification of carboxyl groups, using O-(7-azabenzotriazol-1-yl)-N,N, N′,N′-tetramethyluronium hexafluorophosphate, was performed.
Journal ArticleDOI
Carbon-family materials for flame retardant polymeric materials
TL;DR: In this article, a review of carbon-based materials for polymeric composites with flame retardant properties is presented, including graphite, graphene, carbon nanotubes, fullerenes as well as new emerging carbon forms (carbon nitride, carbon aerogels, etc).
Journal ArticleDOI
Dynamical Conductivity and Zero-Mode Anomaly in Honeycomb Lattices
TL;DR: In this paper, a topological anomaly present at zero energy is shown to give rise to a singular behavior of the dynamic and static conductivity in two-dimensional honeycomb lattices.
Journal ArticleDOI
Arc discharge synthesis of carbon nanotubes: Comprehensive review
Neha Arora,Niti Nipun Sharma +1 more
TL;DR: In this paper, the authors presented the mechanism of nanotube growth in arc discharge and the factors affecting its formation, and the effect of experimental parameters such as setup modification, power supply, arc current, catalyst, pressure, grain size, electrode geometry and temperature on size and yield of the nanotubes.
Journal ArticleDOI
Large scale rapid oxidation synthesis of sno2 nanoribbons
TL;DR: In this paper, a ribbon-like morphology of one-dimensional SnO2 nanoribbons with a ribbonlike morphology has been obtained in large scale via rapid oxidation of elemental tin at 1080 °C.
References
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Journal ArticleDOI
C 60 : Buckminsterfullerene
Harold W. Kroto,Harold W. Kroto,James R. Heath,Sean C. O'Brien,Robert F. Curl,Richard E. Smalley +5 more
TL;DR: In this article, the authors proposed a truncated icosahedron, a polygon with 60 vertices and 32 faces, 12 of which are pentagonal and 20 hexagonal.
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Solid C60: a new form of carbon
TL;DR: In this article, a new form of pure, solid carbon has been synthesized consisting of a somewhat disordered hexagonal close packing of soccer-ball-shaped C60 molecules.
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Filamentous growth of carbon through benzene decomposition
TL;DR: Carbon fibres have been prepared by pyrolysing a mixture of benzene and hydrogen at about 1100°C and have been studied by high resolution electron microscopy.
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Cohesive mechanism and energy bands of solid C60.
Susumu Saito,Atsushi Oshiyama +1 more
TL;DR: In this paper, the authors present microscopic total energy calculations which provide a cohesive property and electronic structures of a new form of solid carbon, the face-centered-cubic crystal (fcc ${\mathrm{C}}_{60}$).
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Growth, Structure, and Properties of Graphite Whiskers
TL;DR: Graphite whiskers have been grown in a dc arc under a pressure of 92 atmospheres of argon and at 3900°K as discussed by the authors, with recoverable lengths up to 3 cm. They are embedded in a solid matrix of graphite which builds up by diffusion of carbon vapor from the positive to the negative electrode.