Listar por autoría "1bbebc96-f771-43eb-9927-e1421d04a460"
Mostrando ítems 1-14 de 14
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A novel approach to obtain highly intense self-activated photoluminescence emissions in hydroxyapatite nanoparticles
Machado, Thales Rafael; Sczancoski, Júlio César; Beltrán Mir, Héctor; Costa Nogueira, Içamira; Siu Li, Maximo; Andres, Juan; Cordoncillo, Eloisa; Longo, Elson Elsevier (2017-05)Defect-related photoluminescence (PL) in materials have attracted interest for applications including near ultraviolet (NUV) excitable light-emitting diodes and in biomedical field. In this paper, hydroxyapatite [Ca10(PO4)6(OH)2] ... -
Connecting structural, optical, and electronic properties and photocatalytic activity of Ag3PO4:Mo complemented by DFT calculations
Barrios Trench, Aline; Machado, Thales Rafael; Gouveia, Amanda; Assis, Marcelo de; da Trindade, Letícia; Santos, Clayane; Perrin, Andre; Perrin, Christiane; Oliva, Mónica; Andres, Juan; Longo, Elson Elsevier (2018-12-15)The present join experimental and theoretical work provides in-depth understanding on the relationship among structural, optical, and electronic properties and photocatalytic activity of Ag3PO4:Mo microcrystals. We prepared ... -
Connecting Theory with Experiment to Understand the Sintering Processes of Ag Nanoparticles
da Silva, Edison; Faccin, Giovani M.; Machado, Thales Rafael; Guerra Macedo, Nadia; Assis, Marcelo de; Maya Johnson, Santiago; Sczancoski, Júlio César; Andres, Juan; Longo, Elson; San-Miguel, Miguel A. American Chemical Society (2019-04)A complementary combination of long-time atomistic molecular dynamics simulations and real-time transmission electron microscopy (TEM) images has been utilized for unraveling, at an atomic resolution, the nature of the ... -
Designing biocompatible and multicolorfluorescent hydroxyapatitenanoparticles for cell-imaging applications
Machado, Thales Rafael; Leite, I. S.; Inada, N. M.; Li, Maximo Siu; Da Silva, J. S.; Andres, Juan; Beltrán Mir, Héctor; Cordoncillo, Eloisa; Longo, Elson Elsevier (2019)In recent years, there has been a growing effort toward the synthesis, engineering and property tuning of biocompatible nanoparticles (NPs) that can be detected by confocal microscopy and then used as fluorescent probes. ... -
Evidence for the formation of metallic In after laser irradiation of InP
Cabral, Luís; Andres, Juan; Machado, Thales Rafael; Picinin, Adalberto; Rino, José Pedro; Lopez-Richard, Victor; Longo, Elson; Gouveia, Amanda; Marques, Gilmar Eugenio; da Silva, Edison; San-Miguel, Miguel A. AIP Publishing (2019-07-12)Structural and electronic changes induced by laser irradiation are currently of interest owing to the possibility to tune the mechanical, optical, and transport properties of the irradiated materials. In this work, we ... -
From Complex Inorganic Oxides to Ag–Bi Nanoalloy: Synthesis by Femtosecond Laser Irradiation
Machado, Thales Rafael; Guerra Macedo, Nadia; Assis, Marcelo de; Doñate-Buendía, Carlos; Mínguez-Vega, Gladys; Teixeira, Mayara Mondego; Foggi, Camila Cristina; Vergani, Carlos; Beltrán Mir, Héctor; Andres, Juan; Cordoncillo, Eloisa; Longo, Elson American Chemical Society (2018-08-24)Bimetallic nanoalloys with a wide variety of structures and compositions have been fabricated through many diverse techniques. Generally, various steps and chemicals are involved in their fabrication. In this study, the ... -
In Situ Growth of Bi Nanoparticles on NaBiO3, delta-, and beta-Bi2O3 Surfaces: Electron Irradiation and Theoretical Insights
Assis, Marcelo de; Carvalho de Oliveira, Marisa; Machado, Thales Rafael; Guerra Macedo, Nadia; Costa, João Paulo C.; Gracia, Lourdes; Andres, Juan; Longo, Elson American Chemical Society (2019-02-04)Herein, we present a combined experimental and theoretical study of the in situ growth of Bi nanoparticles on NaBiO3, δ-, and β-Bi2O3 surfaces mediated by the electron beam of a high-resolution transmission electron ... -
Laser/Electron Irradiation on Indium Phosphide (InP) Semiconductor: Promising Pathways to In Situ Formation of Indium Nanoparticles
Assis, Marcelo de; Guerra Macedo, Nadia; Machado, Thales Rafael; Ferrer, Mateus M.; Gouveia, Amanda; Cordoncillo, Eloisa; Torres-Mendieta, Rafael; Beltrán Mir, Héctor; Mínguez-Vega, Gladys; Leite, Edson R.; Sambrano, Julio; Andres, Juan; Longo, Elson Wiley (2018)In the current study, whether femtosecond laser and electron beam irradiation of indium phosphide (InP) are “green,” fast, and effective methods to produce metallic In nanoparticles is probed. High-resolution transmission ... -
Proof-of-Concept Studies Directed toward the Formation of Metallic Ag Nanostructures from Ag3PO4 Induced by Electron Beam and Femtosecond Laser
Carvalho dos Santos, Clayane; Assis, Marcelo de; Machado, Thales Rafael; Pereira, Paula; Mínguez-Vega, Gladys; Cordoncillo, Eloisa; Beltrán Mir, Héctor; Doñate-Buendía, Carlos; Andres, Juan; Longo, Elson Wiley (2019)In this work, for the first time, the instantaneous nucleation and growth processes of Ag nanoparticles on Ag3PO4 mediated by femtosecond laser pulses are reported and analyzed. The investigated samples are pure Ag3PO4sample, ... -
Rational Design of W-Doped Ag3PO4 as an Efficient Antibacterial Agent and Photocatalyst for Organic Pollutant Degradation
Barrios Trench, Aline; Machado, Thales Rafael; Gouveia, Amanda; Foggi, Camila Cristina; Teodoro , Vinícius; Sanchez Montes, Isaac; Teixeira, Mayara Mondego; da Trindade, Letícia; jacomaci, natalia; Perrin, Andre; perrin, christiane; Aquino, Jose M.; Andres, Juan; Longo, Elson ACS Publications (2020-09-11)Bacterial and organic pollutants are major problems with potential adverse impacts on human health and the environment. A promising strategy to alleviate these impacts consists in designing innovative photocatalysts with ... -
Structural properties and self-activated photoluminescence emissions in hydroxyapatite with distinct particle shapes
Machado, Thales Rafael; Sczancoski, Júlio César; Beltrán Mir, Héctor; Siu Li, Maximo; Andres, Juan; Cordoncillo, Eloisa; Leite, Edson R.; Longo, Elson Elsevier (2018-01)The understanding on defect-related photoluminescence (PL) properties of hydroxyapatite (HA) particles has a fundamental importance in the technological field for the development of new non-toxic biomedical and optical ... -
Study of nanoparticles based on Cr and Sb doped TiO2 as pigments for inkjet technology applications
Jovaní Beltrán, Marcos; Domingo Pascual, María; Machado, Thales Rafael; Longo, Elson; Beltrán Mir, Héctor; Cordoncillo, Eloisa Elsevier (2015-05)Nanoparticles of the ceramic pigment with composition Ti0.97Cr0.015Sb0.015O2 were prepared by microemulsion-mediated solvothermal method at 180 ºC. Anatase or rutile single phase was obtained depending on the synthesis ... -
Tailoring the Bactericidal Activity of Ag Nanoparticles/α-Ag2WO4 Composite Induced by Electron Beam and Femtosecond Laser Irradiation: Integration of Experiment and Computational Modeling
Guerra Macedo, Nadia; Machado, Thales Rafael; Alvarez Roca, Roman; Assis, Marcelo de; Foggi, Camila Cristina; Puerto-Belda, Verónica; Mínguez-Vega, Gladys; Rodrigues, André; San-Miguel, Miguel A.; Cordoncillo, Eloisa; Beltrán Mir, Héctor; Andres, Juan; Longo, Elson American Chemical Society (2019)In nanotechnology research, significant effort is devoted to fabricating patterns of metallic nanoparticles on the surfaces of different semiconductors to find innovative materials with favorable characteristics, such as ... -
α‑AgVO3 Decorated by Hydroxyapatite (Ca10(PO4)6(OH)2): Tuning Its Photoluminescence Emissions and Bactericidal Activity
da Silva, Jussara Soares; Machado, Thales Rafael; Martins, Tiago A.; Assis, Marcelo de; Foggi, Camila Cristina; Guerra Macedo, Nadia; Beltrán Mir, Héctor; Cordoncillo, Eloisa; Andres, Juan; Longo, Elson American Chemical Society (2019-04)Defect-related luminescent materials have attracted interest because of their excellent optical properties and are considered as a less expensive and nontoxic alternative to commonly used lanthanide-based optical systems. ...