Journal
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
Volume 23, Issue 3, Pages 725-730Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1003-6326(13)62521-2
Keywords
SnO2; nanoparticles; hydrothermal method
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Funding
- Hi-tech Research and Development Program of China [2006AA03Z413]
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SnO2 nanoparticles with the average particle size of 5-30 nm were synthesized using SnCl4 center dot 5H(2)O as the precursor and NH3 center dot H2O as the mineralizing agent by hydrothermal method. In the case of 1 kg/batch production, the effects of synthesis conditions including solution concentration, reaction temperature, pressure, time and pH value on the grain size, particle morphology and crystal structure of SnO2 were systematically studied. The particles were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results show that, the particle size can be well controlled in the range of 5-30 nm by adjusting the processing parameters such as reaction temperature and time when the crystal structure and particle morphology remain unchanged. The previous reports, the unusual dependences of the grain size of SnO2 on reaction temperature and time were found. The mechanism for such abnormal grain growth behavior was tentatively elucidated.
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