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Unveiling the efficiency of microwave-assisted hydrothermal treatment for the preparation of SrTiO3 mesocrystals.
SILVA, Luís F.; CATTO, Ariadne C.; AVANSI JUNIOR, Waldir; MESQUITA, Alexandre; MAIA, Lauro J. Q.; LOPES, Osmando F.; SIU LI, Máximo; MOREIRA, Mário L.; LONGO, Elson; ANDRÉS, Juan; MASTELARO, Valmor Roberto.
Abstract: Material processing has become essential for the proper control, tuning and consequent application of the properties of micro/nanoparticles. In this case, we report herein the capability of the microwave-assisted hydrothermal (MAH) method to prepare the SrTiO3 compound, as a case study of inorganic compounds. Analyses conducted by X-ray diffraction, X-ray photoelectron and X-ray absorption spectroscopies confirmed that the MAH route enables the formation of pristine SrTiO3. The results indicated that the combination of thermal and non-thermal effects during the MAH treatment provides ideal conditions for an efficient and rapid synthesis of pristine SrTiO3 mesocrystals. Scanning electron microscopy images revealed a cube-like morphology (of ca. 1 µm) formed via a self-assembly process, influenced by the MAH time. Additionally, photoluminescence measurements revealed a broad blue emission related to intrinsic defects, which decreased with the MAH synthesis time.
Physical Chemistry Chemical Physics
v. 21, n. 39, p. 22031-22038 - Ano: 2019
Fator de Impacto: 3,567
http://dx.doi.org/10.1039/c9cp02893e
    @article={002971837,author = {SILVA, Luís F.; CATTO, Ariadne C.; AVANSI JUNIOR, Waldir; MESQUITA, Alexandre; MAIA, Lauro J. Q.; LOPES, Osmando F.; SIU LI, Máximo; MOREIRA, Mário L.; LONGO, Elson; ANDRÉS, Juan; MASTELARO, Valmor Roberto.},title={Unveiling the efficiency of microwave-assisted hydrothermal treatment for the preparation of SrTiO3 mesocrystals},journal={Physical Chemistry Chemical Physics},note={v. 21, n. 39, p. 22031-22038},year={2019}}