4.6 Article

In(OH)3 and In2O3 Micro/Nanostructures: Controllable NaOAc-Assisted Microemulsion Synthesis and Raman Properties

期刊

JOURNAL OF PHYSICAL CHEMISTRY C
卷 113, 期 45, 页码 19493-19499

出版社

AMER CHEMICAL SOC
DOI: 10.1021/jp906328z

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资金

  1. State Scholarship Fund of China Scholarship Council (CSC) [2008603051]
  2. Natural Science Foundation of China (NSFC) [20671011, 20731002, 10876002, 20771022, 20871016]
  3. III Project [B07012]
  4. Key Laboratory of Structural Chemistry Foundation (KLSCF) [060017]
  5. Excellent Young Scholars Research Fund of Beijing Institute of Technology [2006Y0715]
  6. Basic Research Fund of Beijing Institute of Technology [20060742022, 20070742010]

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In(OH)(3) micro/nanostruCtUres, including nanorods, nanocllipses, microspheres, and microbricks, were successfully synthesized using a CH3COONa(NaOAc)-assisted method involving it cetyltrimethylammonium bromide (CTAB)/water/cyclohexane/n-pentanol microemulsion process. It was found that the experimental parameters, such as the molar ratio (w) between water and CTAB, reaction temperature, chelating ligand CH3COONa, and the concentration of reactants, played important roles in the morphological control of In(OH)(3) structures. An oriented attachment or coalescence-based self-assembly mechanism was used to explain the morphology evolution from nanorods to nanoellipses, then to microspheres. When the In(OH)(3) micro/nanostructures were calcined at 500 degrees C in air, the resulting In2O3 crystals succeeded to similar morphologies and sizes as the corresponding In(OH)(3) precursors. Raman vibrational dynamics modes of the In2O3 structures were analyzed in detail, where these Raman peaks exhibit shape- and size-dependent Raman properties.

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