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Size- and Surface-Determined Transformations: From Ultrathin InOOH Nanowires to Uniform c-In2O3 Nanocubes and rh-In2O3 Nanowires

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journal contribution
posted on 20.04.2009, 00:00 by Xiangxing Xu, Xun Wang
Ultrathin InOOH nanowires with a diameter of ∼2 nm and a length up to ∼200 nm have been synthesized by a hydrolysis reaction in a solution system. Their transformations to c-In2O3 nanocrystals and rh-In2O3 nanowires have been investigated. A dissolution−recrystallization (in solution) or size-related decomposition−recrystallization (in air) mechanism is indicated for the former transformation; the size- and surface-determined transformation is proposed for the latter. These results will help to understand and control the phase stability and transformation concerning the nanodimension and surface restrictions, especially for ultrathin nanowires.