Synthesis and characterization of ZnO microstructures via a cationic surfactant-assisted hydrothermal microemulsion process

Hexagonal cylinder-like ZnO with a regular twinning microstructure was successfully synthesized via a cationic surfactant-assisted hydrothermal microemulsion route. X-ray diffraction, scanning electron microscopy and Ultraviolet and Visible absorption spectroscopy were employed to characterize the s...

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Bibliographic Details
Published in:Materials characterization 2011-05, Vol.62 (5), p.509-516
Main Authors: Liu, Yumin, Lv, Hua, Li, Shuangqing, Xi, Guoxi, Xing, Xinyan
Format: Article
Language:English
Subjects:
ABSORPTION SPECTRA
ABSORPTION SPECTROSCOPY
AGGLOMERATION
Cationic
Cationic surfactant
Cross-disciplinary physics: materials science
rheology
CRYSTAL GROWTH
Cylinders
Exact sciences and technology
Hydrothermal microemulsion method
MATERIALS SCIENCE
Mechanism
MICROEMULSIONS
MICROSTRUCTURE
MORPHOLOGY
Phase diagrams and microstructures developed by solidification and solid-solid phase transformations
Physics
SCANNING ELECTRON MICROSCOPY
Solidification
SURFACTANTS
SYNTHESIS
TWINNING
Ultraviolet
ULTRAVIOLET RADIATION
X-RAY DIFFRACTION
Zinc oxide
ZINC OXIDES
ZnO
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Summary:Hexagonal cylinder-like ZnO with a regular twinning microstructure was successfully synthesized via a cationic surfactant-assisted hydrothermal microemulsion route. X-ray diffraction, scanning electron microscopy and Ultraviolet and Visible absorption spectroscopy were employed to characterize the structure, morphologies and properties of the as-prepared samples. The results showed that the reaction temperature, reaction time and molar ratio ( w) between water and CTAB exhibited obvious influences on the morphologies and sizes of the products. The Ultraviolet and Visible absorption spectra revealed a strong and broad absorption band from ultraviolet to visible region and the maximum absorption peak appeared at 376 nm. Moreover, the possible growth mechanism for the ZnO microstructures was also discussed in this study. ► Hexagonal cylinder-like ZnO with twinning microstructure was prepared. ► Water/surfactant ratio exhibits obvious influence on the morphology and size of ZnO. ► An aggregation mechanism of the ZnO microstructures has been proposed.
ISSN:1044-5803
1873-4189
DOI:10.1016/j.matchar.2011.03.010