TY - JOUR
T1 - A novel solvothermal route for obtaining strontium titanate nanoparticles
AU - Márquez-Herrera, A.
AU - Ovando-Medina, Víctor M.
AU - Corona-Rivera, Miguel A.
AU - Hernandez-Rodriguez, E.
AU - Zapata-Torres, M.
AU - Campos-Gonzalez, E.
AU - Guillen-Cervantes, A.
AU - Zelaya-Angel, O.
AU - Meléndez-Lira, M.
PY - 2013/4
Y1 - 2013/4
N2 - 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 128-229 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 ≥ 1 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.
AB - 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 128-229 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 ≥ 1 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.
KW - Nanopowder
KW - Perovskite
KW - Solvothermal synthesis
KW - Strontium titanate
KW - Titanium butoxide
UR - http://www.scopus.com/inward/record.url?scp=84874374936&partnerID=8YFLogxK
U2 - 10.1007/s11051-013-1525-5
DO - 10.1007/s11051-013-1525-5
M3 - Artículo
SN - 1388-0764
VL - 15
JO - Journal of Nanoparticle Research
JF - Journal of Nanoparticle Research
IS - 4
M1 - 1525
ER -