A new approach for the preparation of SrTiO3 nanocubes

• Published in: Ceramics international Vol. 39; no. 3; pp. 3231 - 3234
• Main Authors: Nakashima, Kouichi, Kera, Masatoshi, Fujii, Ichiro, Wada, Satoshi
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.04.2013
• Subjects: Crystal growth; Nanocomposites; Nanocube; Nanomaterials; Nanostructure; Perovskite oxide; Raw materials; Solvothermal reaction; SrTiO3; Strontium titanates; Titanium; Titanium dioxide; SrTiO3; Nanocube; Solvothermal reaction; Perovskite oxide
• ISSN: 0272-8842; 1873-3956
• DOI: 10.1016/j.ceramint.2012.10.009

This paper describes the preparation of SrTiO3 nanocubes with an average length of ∼20nm. SrTiO3 nanoparticles were prepared using a solvothermal reaction at 240°C for 18h with [(CH3)2CHO]4Ti as a raw material and a little distilled water addition. X-ray diffraction measurements confirmed the presence of perovskite SrTiO3 particles. The water served as an oxygen source for producing the perovskite structure. Furthermore, a new approach to nanocube formation using a mixture of raw materials as titanium sources was investigated. Dispersed SrTiO3 nanocubes were successfully prepared using this approach and a solvothermal reaction performed at 260°C for 18h. SrTiO3 was synthesized from a mixture that included [(CH3)2CHO]4Ti and TiO2 as titanium sources. The [(CH3)2CHO]4Ti and TiO2 contributed to rapid nucleation and crystal growth, respectively. Scanning electron microscopy observations revealed that the particles were nanocubes approximately 20nm in size.