ListarQFA_Articles por tema "α-Ag2WO4"

Mostrando ítems 1-10 de 10

    • openAccess   Acetone gas sensor based on α-Ag2WO4 nanorods obtained via a microwaveassisted hydrothermal route 

      Da Silva, Luis F.; Catto, Ariadne C.; Avansi, Waldir; Cavalcante, Laécio Santos; Mastelaro, Valmor Roberto; Andres, Juan; Aguir, Khalifa; Longo, Elson Elsevier (2016)
      This manuscript addresses the synthesis of one-dimensional (1D) α-Ag2WO4 nanorod-like structures via a microwave-assisted hydrothermal method to be used as an acetone gas sensor. The nanorods showed excellent gas-sensing ...

    • openAccess   Disclosing the nature of vacancy defects in α-Ag2WO4 

      Assis, Marcelo de; Castro, M. S.; Aldao, C. M.; Buono, C.; Ortega, P. P.; Teodoro, M. D.; Andres, Juan; Gouveia, Amanda; Simões, Alexandre; Longo, Elson; Macchi, C. E.; Somoza, Alberto; Moura, F.; Ponce, Miguel Adolfo Elsevier (2023-08)
      Defects at semiconductors with electron acceptor and donor sites govern the electronic and optoelectronic applications due to their unique electronic properties. This work provides deep insight into the nature of defects and ...

    • openAccess   In situ growth of Ag nanoparticles on alpha-Ag2WO4 under electron irradiation: probing the physical principles 

      San-Miguel, Miguel A.; da Silva, Edison; Zanetti, Sonia M.; Cilense, Mário; Fabbro, Maria T.; Gracia, Lourdes; Andres, Juan; Longo, Elson IOP Publishing Ltd (2016-04)
      Exploiting the plasmonic behavior of Ag nanoparticles grown on α-Ag2WO4 is a widely employed strategy to produce efficient photocatalysts, ozone sensors, and bactericides. However, a description of the atomic and electronic ...

    • 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   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 ...

    • closedAccess   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 ...

    • 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   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 ...

    • closedAccess   Unveiling Antimicrobial Properties and Crystallization Induction in PLA Using α-Ag2WO4 Nanoparticles 

      Onue, Letícia A.; Ribeiro , Lara Kelly; Gonçalves, Mariana O.; Longo, Elson; de Sousa, Cristina Paiva; Assis, Marcelo de; Cruz, Sandra A American Chemical Society (2024-03-22)
      In this study, α-Ag2WO4 nanoparticles were synthesized and then immobilized within the poly(lactic acid) (PLA) matrix at varying concentrations (0.5, 1.0, and 3.0%). X-ray diffraction revealed the successful incorporation ...