Carbon nanofiber

Carbon nanofiber

Carbon nanofibers are cylindric nanostructures with graphene layers arranged as stacked cones, cups or plates. Carbon nanofibers with graphene layers wrapped into perfect cylinders are called carbon nanotubes.

ynthesis

Carbon nanofibers are produced from the catalytic decomposition of hydrocarbon gases or carbon monoxide over selected metal particles thatinclude iron, cobalt, nickel, and some of their alloys at temperatures over the range 400±1000°C. This process is termed Catalytic Chemical Vapor Deposition.

Applications

*Electron Field emission Sources
*Composite materials
*Scanning probe microscopy tips
*Carrier material for various catalysts in petrochemistry
*In vertically-aligned arrays, a platform for gene delivery. See Impalefection
* for shielding in space

History

One of the first records is probably a patent dated 1889 on synthesis of filamentous carbon by Hughes and Chambers [T. V. Hughes and C. R. Chambers, Manufacture of Carbon Filaments, US Patent No. 405, 480, 1889.] . The first electron microscopy observations of carbon nanofibers were performed in 1950 by Russian group [2L. V. Radushkevich and V. M. Lukyanovich, Zh. Fiz. Khim. 26, 88s1952d] . In USA in 1970s, the deeper studies in this area were led by R. Terry K. Baker and were motivated by the needto inhibit the growth of carbon nanofibers because of the persistent problems caused by accumulation of thematerial in a variety of commercial processes [Ref Baker] . In Japan, Morinobu Endo pioneered the synthesis of carbon nanofibers [ [http://www.nims.go.jp/eng/news/nimsnow/Vol6/No05/NIMSNOWVol6No5.pdf NIMSNOW International Vol.6 No.5 ] ]

External links

* [http://tolik.sciencedom.com/publications/papers/paper40.htm "Vertically aligned carbon nanofibers and related structures: Controlled synthesis and directed assembly"]

* [http://www.wtec.org/loyola/nano/US.Review/09_03.htm Synthesis, properties and applications of graphite nanofibers by R. Terry K. Baker]

References


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • carbon nanofiber — noun any nanostructure of graphene layers arranged as stacked cones, cups or plates See Also: carbon nanotube …   Wiktionary

  • Nanofiber — SEM image of nanofibers. Nanofibers are defined as fibers with diameters less than 1000 nm nanometers. They can be produced by interfacial polymerization and electrospinning. Carbon nanofibers are graphitized fibers produced by catalytic… …   Wikipedia

  • Углеродные нановолокна — Углеродные нановолокна  углеродные цилиндрические наноструктуры, представляющие собой сложенные стопкой слои графена в виде конусов, «чашек» или пластин. Углерод может существовать в форме трубчатых микроструктур называемых нитями или… …   Википедия

  • Impalefection — is a method of gene delivery using nanomaterials, such as carbon nanofibers, nanotubes, nanowires Ref.1. Needle like nanostructures are synthesized perpendicular to the surface of a substrate. Plasmid DNA containing the gene, intended for… …   Wikipedia

  • Energy density — For energy density in the sense of energy per unit mass, see specific energy. For energy density of foods, see specific energy. Energy density is a term used for the amount of energy stored in a given system or region of space per unit volume.… …   Wikipedia

  • Hydrazine — For the antidepressant, see Hydrazine (antidepressant). Hydrazine …   Wikipedia

  • Morinobu Endo — (遠藤 守信, Endō Morinobu?) (born 28 September 1946 in Suzaka, Nagano) is a Japanese chemist. He is one of the pioneers of carbon nanofiber and carbon nanotube synthesis at the beginning of 1970s. Currently he is Director of Shinshu University… …   Wikipedia

  • Powered exoskeletons in fiction — Powered armor has appeared in a wide variety of fiction, beginning with E. E. Smith s Lensman series in 1937. Since then, it has featured in science fiction movies and literature, comic books, video games, and tabletop role playing games. One of… …   Wikipedia

  • Shinshu University — Infobox University name = Shinshu University native name = 信州大学 ( Shinshu Daigaku ) motto = established = 1949 type = National president= Atsushi Komiyama city = Matsumoto state = Nagano country = Japan undergrad = 8,000 postgrad = 2,000 staff= 2 …   Wikipedia

  • 302-01-2 — Hydrazine Hydrazine Dimensions et modèle 3D de l hydrazine …   Wikipédia en Français

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”