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Solid phase preparation of submicron-sized SrTiO3 crystallites from SrO2 nanoparticles and TiO2 powders
- Source :
-
Materials Letters . Jun2008, Vol. 62 Issue 17/18, p2865-2867. 3p. - Publication Year :
- 2008
-
Abstract
- Abstract: Submicron-sized SrTiO3 crystallites were prepared by a low temperature solid state method. The proposed preparation method involved two simple steps: firstly, SrO2 nanoparticles of 35–90 nm were precipitated from the reaction of Sr(NO3)2 and H2O2 in an alkalescent aqueous solution (pH=8) under the ambient condition; secondly, perovskite phase SrTiO3 with a minor amount of SrCO3 impurity were produced by heating the mixture of excessive SrO2 nanoparticles and commercial TiO2 powders in air at 700 °C for 10 h, which could be easily washed with 1 mol/l HNO3 aqueous solution and distilled water to yield pure SrTiO3 crystallites with the size of about 125–320 nm. The phase, purity and size of the as-obtained product were characterized by means of powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and field emission scanning electron microscopy (FESEM). [Copyright &y& Elsevier]
- Subjects :
- *NANOPARTICLES
*CRYSTAL growth
*CERAMICS
*X-ray photoelectron spectroscopy
Subjects
Details
- Language :
- English
- ISSN :
- 0167577X
- Volume :
- 62
- Issue :
- 17/18
- Database :
- Academic Search Index
- Journal :
- Materials Letters
- Publication Type :
- Academic Journal
- Accession number :
- 32049592
- Full Text :
- https://doi.org/10.1016/j.matlet.2008.01.062