Visualitza QFA_Articles per autoria "dcb153fa-931a-43c9-9854-b96f88f084aa"
Ara mostrant els elements 1-18 d 18
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Ag Nanoparticles/α-Ag2WO4 Composite Formed by Electron Beam and Femtosecond Irradiation as Potent Antifungal and Antitumor Agents
Assis, Marcelo de; Robeldo, Thaiane; Foggi, Camila Cristina; Kubo, A.M.; Mínguez-Vega, Gladys; Cordoncillo, Eloisa; Beltrán Mir, Héctor; Torres-Mendieta, Rafael; Andres, Juan; Oliva, Mónica; Vergani, Carlos; Barbugli, P.A.; Camargo, E.R.; Borra, Ricardo Carneiro; Longo, Elson Nature Research (2019)The ability to manipulate the structure and function of promising systems via external stimuli is emerging with the development of reconfigurable and programmable multifunctional materials. Increasing antifungal and antitumor ... -
Behavior of Bi2S3 under ultrasound irradiation for Rhodamine B dye degradation
Teodoro , Vinícius; Barrios Trench, Aline; da Trindade, Letícia; jacomaci, natalia; Beltrán Mir, Héctor; Andres, Juan; Cordoncillo, Eloisa; Bettini, Jefferson; Longo, Elson Elsevier (2021-10-16)In this study, we have demonstrated that Bi2S3 semiconductor under ultrasound behaves as a piezoelectric material, facilitating the transfer of electrons and holes, thus enabling the formation of oxidizing agents. In 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. ... -
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 ... -
High photocatalytic activity of Ag/Ag3PO4:W heterostructure formed by femtosecond laser irradiation
Barrios Trench, Aline; Teodoro , Vinícius; G. da Trindade, Letícia; Machado, Thales Rafael; Mínguez-Vega, Gladys; Cordoncillo, Eloisa; Doñate-Buendía, Carlos; Andres, Juan; Longo, Elson Sao Paulo State University. Institute of Chemistry (2022-04-11)In this work, the W-doped Ag3PO4 was prepared by the chemical coprecipitation method and irradiated with a femtosecond laser (FL). The successful formation of the Ag/Ag3PO4:W heterostructure was confirmed by XRD analysis. ... -
Laser and electron beam-induced formation of Ag/Cr structures on Ag2CrO4
Lemos, Pablo; Silva, G. S.; Roca, R. A.; Assis, Marcelo de; Torres-Mendieta, Rafael; Beltrán Mir, Héctor; Mínguez-Vega, Gladys; Cordoncillo, Eloisa; Andres, Juan; Longo, Elson Royal Society of Chemistry (2019)The interactions of silver chromate (Ag2CrO4) with a femtosecond (fs) laser and electron beam irradiations were investigated. For the first time, the growth and coalescence of metallic Ag nanoparticles (NPs) on an Ag2CrO4 ... -
Laser-induced formation of bismuth nanoparticles
Assis, Marcelo de; Cordoncillo, Eloisa; Torres-Mendieta, Rafael; Beltrán Mir, Héctor; Mínguez-Vega, Gladys; Gouveia, Amanda; Leite, Edson; Andres, Juan; Longo, Elson Royal Society of Chemistry (2018)In the current communication, the synthesis of metallic Bi nanoparticles with coexisting crystallographic structures (rhombohedral, monoclinic, and cubic) obtained via direct femtosecond laser irradiation of NaBiO3 is ... -
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, ... -
Structural and optical properties of ZnS/MgNb2O6 heterostructures
Santos, Luís P. S.; Cavalcante, Laécio Santos; Fabbro, Maria T.; Beltrán Mir, Héctor; Cordoncillo, Eloisa; Andres, Juan; Longo, Elson Elsevier (2015-03)In this letter, we report a simple and efficient synthetic procedure where the first step is a coprecipitation/calcination method used to obtain magnesium niobate MgNb2O6(MN) nanocrystals and in the second stage a microwave ... -
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 ... -
Synthesis and evaluation of α-Ag2WO4 as novel antifungal agent
Foggi, Camila Cristina; Fabbro, Maria T.; Santos, Luís P. S.; De Santana, Yuri V. B.; Vergani, Carlos; Machado Maciel, Ana Lúcia; Cordoncillo, Eloisa; Andres, Juan; Longo, Elson Elsevier (2017-04-16)Abstract Because of the need for new antifungal materials with greater potency, microcrystals of α-Ag2WO4, a complex metal oxide, have been synthetized by a simple co-precipitation method, and their antifungal activity ... -
Synthesis, antifungal evaluation and optical properties of silver molybdate microcrystals in different solvents: a combined experimental and theoretical study
Fabbro, Maria T.; Foggi, Camila Cristina; Santos, Luís P. S.; Gracia, Lourdes; Perrin, André; Perrin, Christiane; Vergani, Carlos; Machado Maciel, Ana Lúcia; Andres, Juan; Cordoncillo, Eloisa; Longo, Elson Royal Society of Chemistry (2016)In this study, we investigate the structure, antifungal activity, and optical properties of β-Ag2MoO4 using experimental and theoretical approaches. β-Ag2MoO4 samples were prepared by a co-precipitation method using ... -
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 ... -
Theoretical and Experimental Insight on Ag2CrO4 Microcrystals: Synthesis, Characterization, and Photoluminescence Properties
Silva, Gabriela S.; Gracia, Lourdes; Fabbro, Maria T.; Serejo Dos Santos, Luis P.; Beltrán Mir, Héctor; Cordoncillo, Eloisa; Longo, Elson; Andres, Juan American Chemical Society (2016)Ag2CrO4 microcrystals were synthesized by means of the coprecipitation method without the use of a surfactant under three different conditions. On the basis of the theoretical and experimental results, we describe the ... -
Towards the scale-up of the formation of nanoparticles on α -Ag 2 WO 4 with bactericidal properties by femtosecond laser irradiation
Assis, Marcelo de; Cordoncillo, Eloisa; Torres-Mendieta, Rafael; Beltrán Mir, Héctor; Mínguez-Vega, Gladys; Oliveira, Regiane; Leite, Edson R.; Foggi, Camila Cristina; Vergani, Carlos; Longo, Elson; Andres, Juan Nature Publishing Group (2018)In recent years, complex nanocomposites formed by Ag nanoparticles coupled to an α-Ag2WO4 semiconductor network have emerged as promising bactericides, where the semiconductor attracts bacterial agents and Ag nanoparticles ... -
Understanding the formation and growth of Ag nanoparticles on silver chromate induced by electron irradiation in electron microscope: A combined experimental and theoretical study
Fabbro, Maria T.; Gracia, Lourdes; Silva, Gabriela S.; Santos, Luís P. S.; Andres, Juan; Cordoncillo, Eloisa; Longo, Elson Elsevier (2016)Ag2CrO4 microcrystals were synthesized using the co-precipitation method. These microcrystals were characterized through X-ray diffraction (XRD) with Rietveld analysis, field-emission scanning electron microscopy (FE-SEM), ... -
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. ...