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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Shape-controlled synthesis of manganese oxide octahedral molecular sieve three-dimensional nanostructures.

Cryptomelane-type manganese oxide octahedral molecular ( OMS) sieve three-dimensional (3D) nanostructures were synthesized via facile temple-free low-temperature hydrothermal reactions. Morphologies of the cryptomelane-type OMS-2 nanoparticles with tunnel dimension of 4.6 x 4.6 A can be tuned by varying reaction temperatures. At low temperature (120 degrees C), OMS-2 dendritic nanoclusters composed of uniform single-crystal nanotetragonal prisms with square cross-sections were formed. At high temperature (180 degrees C), the morphologies of OMS-2 became spherical dandelion-like microspheres composed of uniform single-crystal OMS-2 nanoneedles. Slow oxidation of Mn(2+) by Cr(2)O(7)(-) under hydrothermal conditions is critical for the formation of the hierarchically ordered OMS-2 3D nanostructures.[1]

References

  1. Shape-controlled synthesis of manganese oxide octahedral molecular sieve three-dimensional nanostructures. Yuan, J., Li, W.N., Gomez, S., Suib, S.L. J. Am. Chem. Soc. (2005) [Pubmed]
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