A novel solvothermal route for obtaining strontium titanate nanoparticles
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- 作者：A. Márquez-Herrera (1)
Víctor M. Ovando-Medina (2)
Miguel A. Corona-Rivera (2)
E. Hernandez-Rodriguez (3)
M. Zapata-Torres (3)
E. Campos-Gonzalez (4)
A. Guillen-Cervantes (4)
O. Zelaya-Angel (4)
M. Meléndez-Lira (4) - 关键词：Strontium titanate ; Titanium butoxide ; Solvothermal synthesis ; Perovskite ; Nanopowder
- 刊名：Journal of Nanoparticle Research
- 出版年：2013
- 出版时间：April 2013
- 年：2013
- 卷：15
- 期：4
- 全文大小：409KB
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Víctor M. Ovando-Medina (2)
Miguel A. Corona-Rivera (2)
E. Hernandez-Rodriguez (3)
M. Zapata-Torres (3)
E. Campos-Gonzalez (4)
A. Guillen-Cervantes (4)
O. Zelaya-Angel (4)
M. Meléndez-Lira (4)
1. Departamento de Ingeniería Mecánica Administrativa, Coordinación Académica Región Altiplano (COARA), Universidad Autónoma de San Luis Potosí, Carretera a Cedral KM 5+600, San José de las Trojes, 78700, Matehuala, S.L.P., Mexico
2. Departamento de Ingeniería Química, Coordinación Académica Región Altiplano (COARA), Universidad Autónoma de San Luis Potosí, Carretera a Cedral KM 5+600, San José de las Trojes, 78700, Matehuala, S.L.P., Mexico
3. Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Unidad Legaría IPN, Calzada Legaría 694, Col. Irrigación, 11500, México, D.F., Mexico
4. Departamento de Física, CINVESTAV-IPN, Apartado Postal 14-740, 07000, México, D.F., México - ISSN：1572-896X
文摘
Strontium titanate (SrTiO3) has attracted a lot of attention because of its possible applications in new microelectronic devices. It is a material with a high dielectric constant, low leakage current, and some of its properties can be changed by adding or modifying the concentration of a dopant, which can be used for a wide range of functional purposes, from simple capacitors to complicated microwave devices. Therefore, in this work, we report the development of a new route to synthesize SrTiO3 nanoparticles based on the solvothermal method by employing two precursor solutions: strontium chloride and titanium(IV) butoxide. Our route allows the production of cubic SrTiO3 nanoparticles with a narrow size distribution. The particle sizes range between 8 and 24?nm, forming agglomerates of SrTiO3 in the range of 128-29?nm. It was demonstrated that the Ti/Sr molar ratio employed into the precursor solution has an important effect onto the chemical composition of the resulting SrTiO3 nanoparticles: when using Ti/Sr?<?1, the formation and incorporation of the SrCO3 compound into the nanoparticles was observed while with Ti/Sr?≥? nanoparticles are free of contaminants. The as-prepared nanoparticles were characterized by energy-dispersive X-ray spectroscopy, X-ray diffraction, transmission electron microscopy, high-resolution TEM, selected area electron diffraction, scanning electron microscopy, and dynamic light scattering.