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A Solution Chemistry Approach for the Selective Formation of Ultralong Nanowire Bundles of Crystalline Cd(OH) 2 on Substrates
Author(s) -
Shinde V. R.,
Shim H.S.,
Gujar T. P.,
Kim H. J.,
Kim W. B.
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200701828
Subject(s) - supersaturation , nucleation , homogeneous , nanowire , substrate (aquarium) , hexagonal crystal system , materials science , precipitation , solubility , solubility equilibrium , aqueous solution , chemical engineering , ionic bonding , nanotechnology , crystallography , chemistry , ion , organic chemistry , physics , thermodynamics , oceanography , geology , meteorology , engineering
The controlled precipitation of a supersaturated Cd 2+ solution is used to selectively deposit Cd(OH) 2 nanowire bundles on a substrate. As schematically depicted in the figure, when the Cd 2+ ionic product exceeds the solubility product, heterogeneous and homogeneous nucleation occur independently on the substrate and in the solution to give nanowire bundles and hexagonal plates, respectively.