Nanofoam

Nanofoams are a class of nanostructured, porous materials (foams) containing a significant population of pores with diameters less than 100 nm. Aerogels are one example of nanofoam.[1]

Metal

In 2006, researchers produced metal nanofoams by igniting pellets of energetic metal bis(tetrazolato)amine complexes. Nanofoams of iron, cobalt, nickel, copper, silver, and palladium have been prepared through this technique. These materials exhibit densities as low as 11 mg/cm3, and surface areas as high as 258 m2/g. These foams are effective catalysts.[2]

Carbon

Carbon nanofoam is an allotrope of carbon discovered in 1997.[3] It consists of a cluster-assembly of carbon atoms strung together in a loose three-dimensional web. The material has a density of 2–10 mg/cm3 (0.0012 lb/ft3).[3][4][5]

See also

References

  1. ↑ Tappan, B.; et al. (2006). "Ultralow-Density Nanostructured Metal Foams:  Combustion Synthesis, Morphology, and Composition". J. Am. Chem. Soc. 128 (20): 6589. doi:10.1021/ja056550k.
  2. ↑ R&D magazine 100 Awards. Access date Aug. 26, 2008.
  3. 1 2 Rode, A.V.; Hyde, S.T.; Gamaly, E.G.; Elliman, R.G.; McKenzie, D.R.; Bulcock, S. (1999). "Structural analysis of a carbon foam formed by high pulse-rate laser ablation". Applied Physics A: Materials Science & Processing 69 (7): S755–S758. doi:10.1007/s003390051522.
  4. ↑ Zani, A.; Dellasega, D.; Russo, V.; Passoni, M. "Ultra-low density carbon foams produced by pulsed laser deposition". Carbon 56: 358–365. doi:10.1016/j.carbon.2013.01.029.
  5. ↑ Zani, A.; Dellasega, D.; Russo, V.; Passoni, M. (2013). "Ultra-low density carbon foams produced by pulsed laser deposition". Carbon 56: 358. doi:10.1016/j.carbon.2013.01.029.


This article is issued from Wikipedia - version of the Thursday, December 03, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.