Journal
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume -, Issue 9, Pages 1445-1451Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.200700936
Keywords
indium; crystal growth; hydrothermal synthesis; photoluminescence
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We show a simple way to synthesize morphology-controllable In(OH)(3) nanostructures by utilizing an amine-assisted hydrolysis of In3+ cations under various reaction temperatures. By annealing as-prepared In(OH)(3) precursors at 400 degrees C in air, we obtained In2O3 nanocrystals that inherited the morphologies of their precursors while still slightly distorted due to the dehydration process of In(OH)(3). This dehydration process that transforms In(OH)(3) into In2O3 was studied by thermogravimetry and differential thermal analysis. X-ray powder diffraction, field emission scanning electron microscopy, transmission electron microscopy, and photoluminescence spectra were used to characterize the as-obtained products. Fourier transform infrared absorption spectra were recorded to investigate the effect of ethylenediamine in In(OH)(3). It was found that the amines play ternary roles, which include being the alkaline media, the coordinating agent, and the surface-anchored organic molecules. ((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008).
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