Listar por autoría "458f1e36-a8ca-469c-8de6-e5c87e46da9d"
Mostrando ítems 1-8 de 8
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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 ... -
Effect of Pressure-Assisted Heat Treatment on Photoluminescence Emission of α-Bi2O3 Needles
Schmidt, Samara; Kubaski, Evaldo T.; Volanti, Diogo P.; Sequinel, Thiago; Bezzon, Vinicius Danilo N.; Beltran, Armando; Tebcherani, Sergio M.; Varela, José A. American Chemical Society (2015-10)Materials with high photoluminescence (PL) intensity can potentially be used in optical and electronic devices. Although the PL properties of bismuth(III) oxide with a monoclinic crystal structure (α-Bi2O3) have been ... -
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 ... -
Radioluminescence properties of decaoctahedral BaZrO3
Moreira, Mario Lucio; Volanti, Diogo P.; Andres, Juan; Montes, Paulo J. R.; Valerio, Mario E. G.; Varela, José A.; Longo, Elson Elsevier (2011)Radioluminescence (RL) emissions were obtained for the BaZrO3 self-assembled nanocrystals under decaoctahedral shape, if produced via microwave-assisted hydrothermal method. Trapped F centers created within the band gap ... -
Structural and electronic analysis of the atomic scale nucleation of Ag on α-Ag2WO4 induced by electron irradiation
Andres, Juan; Gracia, Lourdes; González Navarrete, Patricio; Longo, V. M.; Avansi, Waldir; Volanti, Diogo P.; Ferrer, Mateus M.; Lemos, Pablo S.; La Porta, Felipe A.; Hernandes, Antônio C.; Longo, Elson Nature Publishing Group (2014-06)In this work, we utilise a combination of theory, computation and experiments to understand the early events related to the nucleation of Ag filaments on α-Ag2WO4 crystals, which is driven by an accelerated electron beam ... -
The interplay between morphology and photocatalytic activity in ZnO and N-doped ZnO crystals
Byzynski, Gabriela; Melo, Camila; Volanti, Diogo P.; Ferrer, Mateus M.; Gouveia, Amanda; Ribeiro, Caue; Andres, Juan; Longo, Elson Elsevier (2017)Photocatalytic materials can perform oxidative and reductive reactions over their surfaces when excited with light. Intrinsic characteristics of the material such as superficial area, morphological structure, and crystalline ... -
Toward an Understanding of the Growth of Ag Filaments on a-.Ag2WO4 and Their Photoluminescent Properties: A Combined Experimental and Theoretical Study
Longo, Elson; Volanti, Diogo P.; Longo, V. M.; Gracia, Lourdes; Nogueira, Içamira C.; Almeida, M.A.P.; Pinheiro, Antonio N.; Ferrer, Mateus M.; Cavalcante, Laécio Santos; Andres, Juan American Chemical Society (2013-12)A combined experimental and theoretical study was conducted on the structure and electronic properties of α-Ag2WO4 to clarify the nucleation and growth processes of Ag filaments on α-Ag2WO4 crystals induced by electron ... -
Toward an Understanding of the Growth of Ag Filaments on α-Ag2WO4 and Their Photoluminescent Properties: A Combined Experimental and Theoretical Study
Longo, Elson; Volanti, Diogo P.; Longo, V. M.; Gracia, Lourdes; Nogueira, Içamira C.; Almeida, M.A.P.; Pinheiro, Antonio N.; Ferrer, Mateus M.; Cavalcante, Laécio Santos; Andres, Juan American Chemical Society (2013)A combined experimental and theoretical study was conducted on the structure and electronic properties of α-Ag2WO4 to clarify the nucleation and growth processes of Ag filaments on α-Ag2WO4 crystals induced by electron ...