Synthesis of indium oxide nanoparticles by solid state chemical reaction

A three stage process consisting of mechanical milling, heat treatment, and washing has been investigated as a means of manufacturing nanoparticulate powders of In 2 O 3 . In the first stage of processing, mechanical milling was used to prepare a nanocrystalline mixture of In 2 (SO 4 ) 3 , Na 2 CO 3...

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Veröffentlicht in:Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology 2009-11, Vol.11 (8), p.2171-2177
1. Verfasser: Dodd, Aaron
Format: Artikel
Sprache:eng
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Zusammenfassung:A three stage process consisting of mechanical milling, heat treatment, and washing has been investigated as a means of manufacturing nanoparticulate powders of In 2 O 3 . In the first stage of processing, mechanical milling was used to prepare a nanocrystalline mixture of In 2 (SO 4 ) 3 , Na 2 CO 3 , and NaCl. Subsequent heat treatment of the milled reactant resulted in the formation of nanocrystalline In 2 O 3 particles embedded within a matrix of Na 2 SO 4 and NaCl. In the final stage of processing, the In 2 O 3 powder was recovered by washing with deionised water. The duration of milling was found to determine the degree of hard agglomeration in the final washed powder. It was also found that the average particle size of the powder could be controlled between 8 and 18 nm by simply varying the temperature of the post-milling heat treatment over the range of 400 to 550°C. These results demonstrate that solid state chemical reaction can be used as a technically simple method for manufacturing nanoparticulate In 2 O 3 powders with a controlled particle size and low levels of hard agglomeration.
ISSN:1388-0764
1572-896X
DOI:10.1007/s11051-009-9707-x