Morphology-controlled synthesis of SrTiO3 micro-scale particles

doi:10.1088/1674-1056/23/12/128104

摘要/Abstract

摘要： A novel and simple strategy of morphology-controlled SrTiO₃ (ST) micro-scale particle synthesis by the flux method is reported. Systematic experiments are designed to realize the tunable morphologies of the particles when the flux salt, sintering process, and the precursors are changed. The ST plates can be synthesized by plate-like Bi₄Ti₃O₁₂ (BIT) precursors in NaCl flux. However, the as-synthesized Bi₄Ti₃O₁₂ grains transform into reticular particles and finally into rods at higher temperature in NaCl and KCl compounds. Besides, cubic ST particles are also prepared using different precursors as a comparative experiment. This study provides a strategy for further investigations in designing the morphology-controlled particles and efficient anisotropic materials of perovskite structure such as ferroelectric and photocatalyst.

关键词: morphology-controlled synthesis, SrTiO₃ particles, topochemical microcrystal conversion

Abstract: A novel and simple strategy of morphology-controlled SrTiO₃ (ST) micro-scale particle synthesis by the flux method is reported. Systematic experiments are designed to realize the tunable morphologies of the particles when the flux salt, sintering process, and the precursors are changed. The ST plates can be synthesized by plate-like Bi₄Ti₃O₁₂ (BIT) precursors in NaCl flux. However, the as-synthesized Bi₄Ti₃O₁₂ grains transform into reticular particles and finally into rods at higher temperature in NaCl and KCl compounds. Besides, cubic ST particles are also prepared using different precursors as a comparative experiment. This study provides a strategy for further investigations in designing the morphology-controlled particles and efficient anisotropic materials of perovskite structure such as ferroelectric and photocatalyst.

Key words: morphology-controlled synthesis, SrTiO₃ particles, topochemical microcrystal conversion

中图分类号: (Methods of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)

81.10.-h

81.05.-t (Specific materials: fabrication, treatment, testing, and analysis) 81.10.Fq (Growth from melts; zone melting and refining)

曹加锋, 冀月霞. Morphology-controlled synthesis of SrTiO₃ micro-scale particles[J]. , 2014, 23(12): 128104-128104.

Cao Jia-Feng (曹加锋), Ji Yue-Xia (冀月霞). Morphology-controlled synthesis of SrTiO₃ micro-scale particles[J]. Chin. Phys. B, 2014, 23(12): 128104-128104.

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Morphology-controlled synthesis of SrTiO₃ micro-scale particles

Morphology-controlled synthesis of SrTiO₃ micro-scale particles

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