TY - JOUR
T1 - Nanosheets-based phombohedral in2O3 3D hierarchical microspheres
T2 - synthesis, growth mechanism, and optical properties
AU - Dong, Hongxing
AU - Chen, Zhanghai
AU - Sun, Liaoxin
AU - Zhou, Liang
AU - Ling, Yanjing
AU - Yu, Chengzhong
AU - Tan, H. Hoe
AU - Jagadish, Chennupati
AU - Shen, Xuechu
PY - 2009/6/18
Y1 - 2009/6/18
N2 - In this Article, we demonstrate a new synthesis route for the construction of rhombohedral In2O3 (rh-ln2O3) 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-ln 2O3 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-ln2O 3 NBFMs were investigated.
AB - In this Article, we demonstrate a new synthesis route for the construction of rhombohedral In2O3 (rh-ln2O3) 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-ln 2O3 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-ln2O 3 NBFMs were investigated.
UR - http://www.scopus.com/inward/record.url?scp=67650756791&partnerID=8YFLogxK
U2 - 10.1021/jp902843p
DO - 10.1021/jp902843p
M3 - Article
SN - 1932-7447
VL - 113
SP - 10511
EP - 10516
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 24
ER -