Actas de congresos
Microwave-assisted hydrothermal synthesis of ZnO powders with different reagents
Technical Proceedings of the 2012 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2012, p. 405-408.
Universidade Federal de Pernambuco (UFPE)
Universidade Estadual Paulista (UNESP)
Universidade de São Paulo (USP)
In this work, zinc oxide powders were synthesized by microwave-assisted hydrothermal method in basic medium. These powders were analyzed by X-ray diffraction (XRD), Field-emisson gum scanning electron microscopy (FEG-SEM), Ultraviolet-visible (UV-vis) absorption spectroscopy and photoluminescence (PL) measurements. XRD pattern confirmed that the pure ZnO phases were obtained after MH processing performed at 130°C/ 1h. FEG-SEM micrographs reveals that these nanostructures are made up of ZnO plates. UV-vis results were employed to determine the optical band gap these materials. Also, it showed existence of photoluminescence (PL) in the different zinc powders. An orange PL emission when excited by 350 nm wavelength at room temperature was observad in the different powders.
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Long-range and short-range structures of cube-like shape SrTiO3 powders: microwave-assisted hydrothermal synthesis and photocatalytic activity Silva, Luís F.; Avansi Junior, Waldir; Andrés, Juan; Ribeiro, Caue; Moreira, Mário L.; Longo, Elson; Mastelaro, Valmor Roberto (Royal Society of Chemistry - RSCCambridge, 2013-08)We report herein a detailed study on the influence of microwave-assisted hydrothermal (MAH) treatment time on both long and short range structures around Ti atoms of SrTiO3 powders. Few studies have been carried out on ...
SrMoO4 powders processed in microwave-hydrothermal: Synthesis, characterization and optical properties Sczancoski, J. C.; Cavalcante, L. S.; Joya, M. R.; Varela, José Arana; Pizani, P. S.; Longo, Elson
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