Listar por autoría "21d11371-c489-411a-bea4-4ace0e7fb2a7"
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A Joint Experimental and Theoretical Study on the Nanomorphology of CaWO4 Crystals
Longo, V. M.; Gracia, Lourdes; Stroppa, Daniel G.; Cavalcante, Laécio Santos; Orlandi, Marcelo; Ramírez, Antonio J.; Leite, Edson R.; Andres, Juan; Beltran, Armando; Varela, José A.; Longo, Elson ACS (2011-08)By the joint use of experimental techniques such as field emission scanning electron microscopy (FEG-SEM), transmission electron microscopy (TEM), and high resolution transmission electron microscopy (HR-TEM) and ab initio ... -
Direct in situ observation of the electron-driven synthesis of Ag filaments on a-Ag2WO4 crystals
Longo, Elson; Cavalcante, Laécio Santos; Volanti, Diogo P.; Gouveia, Amanda; Longo, V. M.; Varela, José A.; Orlandi, Marcelo; Andres, Juan Nature Publishing group (2013)In this letter, we report, for the first time, the real-time in situ nucleation and growth of Ag filaments on α-Ag2WO4 crystals driven by an accelerated electron beam from an electronic microscope under high vacuum. We ... -
Insight into Copper-Based Catalysts: Microwave-Assisted Morphosynthesis, In Situ Reduction Studies, and Dehydrogenation of Ethanol
Volanti, Diogo P.; Sato, André G.; Orlandi, Marcelo; Bueno, José M. C.; Longo, Elson; Andres, Juan Wiley (2011)Copper-based catalysts obtained by microwave-assisted morphosynthesis were correlated with the dehydrogenation of ethanol. The degree of reduction was monitored using time-resolved in situ XANES during TPR under H2. A ... -
SnO2 nanocrystals synthesized by microwave-assisted hydrothermal method: towards a relationship between structural and optical properties
Mendes, Paulo G.; Moreira, Mario Lucio; Tebcherani, Sergio M.; Orlandi, Marcelo; Andres, Juan; Li, Maximo Siu; Diaz Mora, Nora; Varela, José A.; Longo, Elson Springer Netherlands (2012-02)The exploration of novel synthetic methodologies that control both size and shape of functional nanostructure opens new avenues for the functional application of nanomaterials. Here, we report a new and versatile approach ...