Preparation of high surface area tin oxide powders by a homogeneous precipitation method

Tin oxide powders were synthesized by a homogeneous precipitation method using urea from SnCl 4 solution. This method resulted in the formation of nanoscale precursor powders in the range of 3 to 4 nm in diameter together with a narrow particle size distribution, while the conventional precipitation...

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Bibliographic Details
Published in:Materials letters 2000-02, Vol.42 (5), p.283-289
Main Authors: Song, Ki Chang, Kang, Yong
Format: Article
Language:English
Subjects:
Chemistry
Colloidal state and disperse state
Exact sciences and technology
Gas sensors
General and physical chemistry
High surface area
Homogeneous precipitation method
Nanoparticles
Powders
SmO 2
Tin oxide powders
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Summary:Tin oxide powders were synthesized by a homogeneous precipitation method using urea from SnCl 4 solution. This method resulted in the formation of nanoscale precursor powders in the range of 3 to 4 nm in diameter together with a narrow particle size distribution, while the conventional precipitation method led to the formation of precursor powder of not only larger particles (4–6 nm) but also wider particle size distribution. When these precursor powders were calcined at 600°C for 2 h, the powders from the homogeneous precipitation method showed higher specific surface areas (24–44 m 2/g). On the other hand, the powders from the precipitation method exhibited lower specific surface areas (15–18 m 2/g).
ISSN:0167-577X
1873-4979
DOI:10.1016/S0167-577X(99)00199-8