Listar UJI: Investigación por autoría "b7278a0f-0dc9-41ac-a722-0666d9cf5046"

Mostrando ítems 41-60 de 67

    • openAccess   Polypropylene Modified with Ag-Based Semiconductors as a Potential Material against SARS-CoV-2 and Other Pathogens 

      Assis, Marcelo de; Ribeiro , Lara Kelly; Gonçalves, Mariana O.; Staffa, Lucas Henrique; Paiva, Robert S.; R. Lima, Lais; Coelho, Dyovani; Almeida, Lauana F.; Moraes, Leonardo N; Rosa, Ieda L. V.; Mascaro, Lucia; Grotto, Rejane M. T.; Sousa, Cristina P; Andres, Juan; Longo, Elson; Cruz, Sandra A American Chemical Society (2022-10-14)
      The worldwide outbreak of the coronavirus pandemic (COVID-19) and other emerging infections are difficult and sometimes impossible to treat, making them one of the major public health problems of our time. It is noteworthy ...

    • openAccess   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, ...

    • openAccess   PVC-SiO2-Ag composite as a powerful biocide and anti-SARS-CoV-2 material 

      Assis, Marcelo de; Simoes, Luiz Gustavo P.; Tremiliosi, Guilherme; Ribeiro , Lara Kelly; Coelho, Dyovani; Minozzi, Daniel; Santos, Renato; Vilela, Daiane C. B.; Mascaro, Lucia; Andres, Juan; Longo, Elson Springer (2021-08-31)
      The ongoing COVID-19 pandemic has pushed scientists and technologists to find novel strategies to develop new materials to prevent the transmission, spread, and entry of pathogens into the human body. In this report, the ...

    • openAccess   Revealing the Nature of Defects in α-Ag2WO4 by Positron Annihilation Lifetime Spectroscopy: A Joint Experimental and Theoretical Study 

      Assis, Marcelo de; Ponce, Miguel Adolfo; Gouveia, Amanda; de Souza, Daniele; Costa, João Paulo; Teodoro , Vinícius; Galvão Gobato, Yara; Andres, Juan; Macchi, Carlos; Somoza, Alberto; Longo, Elson American Chemical Society (2021)
      Electron–matter coupling is a fascinating way to tune and modify the properties of materials. In this work, we present a study on the formation and nature of vacancy-like defects in α-Ag2WO4 samples synthesized in a water ...

    • openAccess   SiO2-Ag Composite as a Highly Virucidal Material: A Roadmap that Rapidly Eliminates SARS-CoV-2 

      Assis, Marcelo de; pagotto simoes, luiz gustavo; Tremiliosi, Guilherme; Coelho, Dyovani; Minozzi, Daniel; Santos, Renato; Vilela, Daiane C. B.; Rodrigues do Santos, Jeziel; Ribeiro , Lara Kelly; Rosa, Ieda; Mascaro, Lucia; Andres, Juan; Longo, Elson MDPI (2021-03-04)
      COVID-19, as the cause of a global pandemic, has resulted in lockdowns all over the world since early 2020. Both theoretical and experimental efforts are being made to find an effective treatment to suppress the virus, ...

    • openAccess   Spirulina application in food packaging: Gaps of knowledge and future trends 

      Nakamoto, Monica Masako; Assis, Marcelo de; Gonçalves de Oliveira Filho, Josemar; Braga, Anna Elsevier (2023-02)
      Background: Conventional plastics have been widely applied in the food industry as packaging material because of their attractive characteristics, such as great mechanical resistance and moldability, as well as their ...

    • openAccess   Structure, optical properties, and photocatalytic activity of α-Ag2W0.75Mo0.25O4 

      Penha, M.D.; Gouveia, Amanda; Teixeira, Mayara Mondego; De Oliveira, R. C.; Assis, Marcelo de; Sambrano, J. R.; Yokaichya, F.; Santos, C. C.; Gonçalves, R. F.; Siu Li, Maximo; San-Miguel, Miguel A.; Andres, Juan; Longo, Elson Elsevier (2020-07-23)
      This article describes the synthesis of α-Ag2W0.75Mo0.25O4 using a coprecipitation method followed by microwave irradiation for different times. The samples were characterized using X-ray and neutron diffractions with ...

    • openAccess   Study of biological properties of gold nanoparticles: Low toxicity, no proliferative activity, no ability to induce cell gene expression and no antiviral activity 

      Salesa Landete, Beatriz; Ferrús-Manzano, Patricia; Tuñón Molina, Alberto; Cano-Vicent, Alba; Assis, Marcelo de; Andres, Juan; Serrano-Aroca, Ángel Elsevier (2023-07-26)
      Gold nanoparticles (AuNPs) are a fundamental building block of many applications across nanotechnology as they have excellent biosafety which make them promising for a broad range of biomedical applications. Here we explore ...

    • closedAccess   Surface-dependent photocatalytic and biological activities of Ag2CrO4: Integration of experiment and simulation 

      Assis, Marcelo de; Foggi, Camila Cristina; Teodoro , Vinícius; De Campos da Costa, Joao Paulo; Silva, Carlos Eduardo; Robeldo, Thaiane; Caperucci, Priscila Fernanda; Vergani, Carlos; Borra, Ricardo Carneiro; Sorribes, Iván; Gouveia, Amanda; San-Miguel, Miguel A.; Andres, Juan; Longo, Elson Elsevier (2021-04-15)
      In this work, we present a joint experimental and theoretical study towards unveiling the photocatalytic (photodegradation of Rhodamine B), the antifungal (towards Candida glabrata) and cytotoxicity (against the L929 cell ...

    • openAccess   Surface-dependent properties of α-Ag2WO4: a joint experimental and theoretical investigation 

      Laier, Leticia O.; Assis, Marcelo de; Foggi, Camila C.; Gouveia, Amanda; Vergani, Carlos; Santana, Luís C. L.; Cavalcante, Laécio Santos; Andres, Juan; Longo, Elson Springer (2020-06-10)
      Alpha-silver tungstate (α-Ag2WO4) has attracted much attention in recent years due to its unique crystal and electronic structures, which are suitable for a wide range of applications. This work presents a more realistic ...

    • openAccess   Surfactant effects in the morphology and the photocatalytic activity of the BaMoO4 crystals 

      Gouveia, Amanda; Bellucci, Gustavo Venancio; Ribeiro , Lara Kelly; Assis, Marcelo de; Rosa, Ieda; Longo, Elson; Andres, Juan; San-Miguel, Miguel A. Sao Paulo State University. Institute of Chemistry (2022-04-11)
      This paper discloses the effect of the surfactant sodium dodecyl sulfate (SDS) in the morphology and the photocatalytic activity of BaMoO4 crystals. Experimental techniques were applied to study the order-disorder degree ...

    • openAccess   Surfactant-Mediated Morphology and Photocatalytic Activity of α‑Ag2WO4 Material 

      Guerra Macedo, Nadia; Gouveia, Amanda; Alvarez Roca, Roman; Assis, Marcelo de; Gracia, Lourdes; Andres, Juan; Leite, Edson R.; Longo, Elson American Chemical Society (2018-03)
      In the present work, the morphology (hexagonal rod-like vs cuboid-like) of an α-Ag2WO4 solid-state material is manipulated by a simple controlled-precipitation method, with and without the presence of the anionic surfactant ...

    • closedAccess   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 ...

    • openAccess   The Relationship between Photoluminescence Emissions and Photocatalytic Activity of CeO2 Nanocrystals 

      Piccoli Moreno, Henrique; Domingues, G.L.; Assis, Marcelo de; Ortega, Pedro; Mastelaro, Valmor Roberto; Arjona Ramírez, Miguel; Simões, Alexandre American Chemical Society (2023-03-02)
      In this work, we focus on understanding the morphology and photocatalytic properties of CeO2 nanocrystals (NCs) synthesized via a microwave-assisted solvothermal method using acetone and ethanol as solvents. Wulff constructions ...

    • openAccess   Toward Expanding the Optical Response of Ag2CrO4 and Bi2O3 by Their Laser-Mediated Heterojunction 

      Torres-Mendieta, Rafael; Teixeira, Mayara Mondego; Mínguez-Vega, Gladys; de Souza, Daniele; Galvão Gobato, Yara; Assis, Marcelo de; Beltrán Mir, Héctor; Cordoncillo, Eloisa; Andres, Juan; Cernik, Miroslav; Longo, Elson American Chemical Society (2020-11-18)
      The formation of heterojunctions between semiconductors with distinct properties usually expands their capabilities. In this context, many methodologies have been employed in pursuing efficient and fruitful heterojunctions. ...

    • closedAccess   Towards a white-emitting phosphor Ca10V6O25 based material 

      Teixeira, Mayara Mondego; Galvão Gobato, Yara; Gracia, Lourdes; Da Silva, Luis F.; Avansi, Waldir; Assis, Marcelo de; Oliveira, Regiane; Prando, Gabriela Augusta; Andres, Juan; Longo, Elson Elsevier (2019-12-27)
      To achieve a stable material capable of white-light emission, we fabricated Ca10V6O25 by both co-precipitation (CP) and microwave-assisted hydrothermal (MAH) methods at different temperatures. The effects of structural ...

    • openAccess   Towards an efficient selective oxidation of sulfides to sulfones by NiWO4 and α-Ag2WO4 

      Assis, Marcelo de; Gouveia, Amanda; Ribeiro, Lara Kelly; Ponce, Miguel Adolfo; Churio, Maria Sandra; Oliveira, Osvaldo N.; Mascaro, Lucia; Longo, Elson; Llusar, Rosa; Guillamón, Eva; Andres, Juan Elsevier (2023-02-25)
      Chemoselective oxidation of sulfides to sulfones under mild conditions is relevant for industry, but challenging owing to the need to establish catalysis mechanisms and optimize several experimental parameters. Herein, we ...

    • openAccess   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 ...

    • openAccess   Tug-of-War Driven by the Structure of Carboxylic Acids: Tuning the Size, Morphology, and Photocatalytic Activity of α-Ag2WO4 

      Ribeiro , Lara Kelly; Gouveia, Amanda; das Chagas da Silva Machado, Francisco; Guimarães Nolêto, Luis Fernando; Assis, Marcelo de; Batista, André; Cavalcante, Laécio Santos; Guillamón, Eva; Rosa, Ieda; Longo, Elson; Andres, Juan; Luz Jr, Geraldo MDPI (2022-09-23)
      Size and morphology control during the synthesis of materials requires a molecular-level understanding of how the addition of surface ligands regulates nucleation and growth. In this work, this control is achieved by ...

    • openAccess   Tuning the morphology to enhance the catalytic activity of α-Ag2WO4 through V-doping 

      Lima Patrocinio, Katiana; Santos, Jeziel Rodrigues; Granone, Luis Ignacio; Ponce, Miguel Adolfo; Churio, Maria Sandra; Ribeiro, Lara Kelly; Daldin Teodoro, Marcio; Llusar, Rosa; Andres, Juan; Longo, Elson; Assis, Marcelo de Royal Society of Chemistry (2023-09-30)
      Here, we present the synthesis of a highly efficient V-doped α-Ag2WO4 catalyst for the oxidation of sulfides to sulfones, exhibiting a high degree of tolerance towards various sensitive functional groups. Remarkably, the ...