Controllable synthesis of spindle-like ZnO nanostructures by a simple low-temperature aqueous solution route

▶ Monodisperse spindle-like ZnO nanocrystals were successfully produced via a simple direct precipitation at relative low temperature without calcination. ▶ The lowest temperature synthesis of ZnO is 40°C. ▶ Rod-like, spindle-like and prism-like ZnO were obtained by adjusting temperatures, additives...

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Bibliographic Details
Published in:Applied surface science 2011-02, Vol.257 (9), p.4519-4523
Main Authors: Lu, Hong-xia, Zhao, Yun-long, Yu, Xiu-jun, Chen, De-liang, Zhang, Li-wei, Xu, Hong-liang, Yang, Dao-yuan, Wang, Hai-long, Zhang, Rui
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Direct precipitation
Exact sciences and technology
Morphology
Nanocomposites
Nanomaterials
Nanostructure
Nanostructures
Physics
Precipitation
Reagents
Spindle-like
Synthesis
Zinc oxide
ZnO
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Summary:▶ Monodisperse spindle-like ZnO nanocrystals were successfully produced via a simple direct precipitation at relative low temperature without calcination. ▶ The lowest temperature synthesis of ZnO is 40°C. ▶ Rod-like, spindle-like and prism-like ZnO were obtained by adjusting temperatures, additives and Zn2+/OH− ratios. ▶ The possible formation mechanism was also proposed based on the experimental results. Spindle-like ZnO nanostructures were successfully synthesized through direct precipitation of zinc acetate aqueous solution at 60°C. Phase structure, morphology and microstructure of the products were investigated by X-ray diffraction, TG-DTA, FTIR and field emission scanning electron microscopy (FESEM). Result showed that hexagonal wurtzite structure ZnO nanostructures with about 100nm in diameter and 100–200nm in length were obtained. HMTA acted as a soft template in the process and played an important role in the formation of spindle-like ZnO nanostructures. Meanwhile, different morphologies were also obtained by altering synthetic temperature, additional agents and the ratios of Zn2+/OH−. Possible mechanism for the variations of morphology with synthesis parameters was also discussed in this paper.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2010.12.115