Nanosheets-based phombohedral In2O3 3D hierarchical microspheres: synthesis, growth mechanism, and optical properties

Dong, Hongxing, Chen, Zhanghai, Sun, Liaoxin, Zhou, Liang, Ling, Yanjing, Yu, Chengzhong, Tian, H. Hoe, Jagadish, Chennupati and Shen, Xuechu (2009) Nanosheets-based phombohedral In2O3 3D hierarchical microspheres: synthesis, growth mechanism, and optical properties. The Journal of Physical Chemistry Part C: Nanomaterials and Interfaces, 113 24: 10511-10516. doi:10.1021/jp902843p


Author Dong, Hongxing
Chen, Zhanghai
Sun, Liaoxin
Zhou, Liang
Ling, Yanjing
Yu, Chengzhong
Tian, H. Hoe
Jagadish, Chennupati
Shen, Xuechu
Title Nanosheets-based phombohedral In2O3 3D hierarchical microspheres: synthesis, growth mechanism, and optical properties
Formatted title
Nanosheets-based phombohedral In2O3 3D hierarchical microspheres: synthesis, growth mechanism, and optical properties
Journal name The Journal of Physical Chemistry Part C: Nanomaterials and Interfaces   Check publisher's open access policy
ISSN 1932-7447
1932-7455
Publication date 2009-06-18
Year available 2009
Sub-type Article (original research)
DOI 10.1021/jp902843p
Open Access Status Not yet assessed
Volume 113
Issue 24
Start page 10511
End page 10516
Total pages 6
Place of publication Washington, DC, United States
Publisher American Chemical Society
Language eng
Subject 2504 Electronic, Optical and Magnetic Materials
2100 Energy
1606 Physical and Theoretical Chemistry
2508 Surfaces, Coatings and Films
Abstract In this Article, we demonstrate a new synthesis route for the construction of rhombohedral In2O3 (rh-In2O3) nanosheets-based three-dimensional flowerlike microspheres (NBFMs). In this route, InOOH NBFMs were first prepared by a convenient and controllable method based on a complex reaction, using InCl3 center dot 4H(2)O as the starting material, oxalic acid as the complexing agent, and a mixture of glycerol and water as solvent at 180 degrees C for 12 h. The rh-In2O3 NBFMs were then obtained by calcining InOOH NBFMs precursors at 490 degrees C under ambient pressure. Scanning electron microscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy, infrared spectroscopy, and thermogravimetric analysis were adopted to investigate the evolution process of InOOH precursors, and the chemical reactions at each stage were identified. The Ostwald ripening and anisotropic crystal structure are proposed to account for the formation of InOOH NBFMs on the basis of the evaluation of the time-dependent morphology. Furthermore, the influence of solvent on the morphologies and the photoluminescence properties of the rh-In2O3 NBFMs were investigated.
Formatted abstract
In this Article, we demonstrate a new synthesis route for the construction of rhombohedral In2O3 (rh-In2O3) nanosheets-based three-dimensional flowerlike microspheres (NBFMs). In this route, InOOH NBFMs were first prepared by a convenient and controllable method based on a complex reaction, using InCl3·4H2O as the starting material, oxalic acid as the complexing agent, and a mixture of glycerol and water as solvent at 180 °C for 12 h. The rh-In2O3 NBFMs were then obtained by calcining InOOH NBFMs precursors at 490 °C under ambient pressure. Scanning electron microscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy, infrared spectroscopy, and thermogravimetric analysis were adopted to investigate the evolution process of InOOH precursors, and the chemical reactions at each stage were identified. The Ostwald ripening and anisotropic crystal structure are proposed to account for the formation of InOOH NBFMs on the basis of the evaluation of the time-dependent morphology. Furthermore, the influence of solvent on the morphologies and the photoluminescence properties of the rh-In2O3 NBFMs were investigated.
Keyword Corundum-Type In2O3
Ambient-Pressure
Hollow Microspheres
Facile Synthesis
Water-Treatment
Networks
Nanostructures
Nanocrystals
Fabrication
Nanowires
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 2004C13619004
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: ERA 2012 Admin Only
Australian Institute for Bioengineering and Nanotechnology Publications
 
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Created: Tue, 18 Oct 2011, 08:57:04 EST by Professor Chengzhong Yu on behalf of Aust Institute for Bioengineering & Nanotechnology