• openAccess   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 ...
    • openAccess   Luminescence and structural properties of Ca1-xZrO3:Eux: An experimental and theoretical approach 

      Assis, Marcelo de; Carvalho de Oliveira, Marisa; Gouveia, Amanda; Ribeiro , Lara Kelly; Rosa, Ieda; Ribeiro, Renan; Andres, Juan; Longo, Elson Sao Paulo State University. Institute of Chemistry (2022-04-11)
      The influence of Eu3+ cations in the host matrix of CaZrO3 was investigated by analyzing its luminescence and structural properties. The Ca1-xZrO3:Eux crystals (x = 0.01, 0.02, 0.04, and 0.08 mol%) were obtained by a simple ...
    • openAccess   Microwave-Driven Hexagonal-to-Monoclinic Transition in BiPO4: An In-Depth Experimental Investigation and First-Principles Study 

      Mora Tello, Ana Cristina; Assis, Marcelo de; Menasce, Ricardo; Gouveia, Amanda; Teodoro , Vinícius; jacomaci, natalia; ZAGHETE, MARIA; Andres, Juan; Marques, Gilmar E.; Teodoro, Marcio D.; da Silva, Albérico B. F.; Bettini, Jefferson; Longo, Elson American Chemical Society (2020-06-01)
      Present theoretical and experimental work provides an in-depth understanding of the morphological, structural, electronic, and optical properties of hexagonal and monoclinic polymorphs of bismuth phosphate (BiPO4). Herein, ...
    • openAccess   Modeling the atomic-scale structure, stability, and morphological transformations in the tetragonal phase of LaVO4 

      Gouveia, Amanda; Ferrer, Mateus M.; Sambrano, Julio; Andres, Juan; Longo, Elson Elsevier (2016)
      In this communication, a systematic study of the surface structure, including energy management during morphological transformations of tetragonal phase of LaVO4 , has been carried out. For this study, we combined ...
    • openAccess   Modulating the properties of multifunctional semiconductors by means of morphology: Theory meets experiments 

      Gouveia, Amanda; Gracia, Lourdes; Longo, Elson; San-Miguel, Miguel A.; Andres, Juan Elsevier (2021-02-15)
      Morphology control of multifunctional semiconductor materials is a significant topic since it directly impacts the physical and chemical properties in catalysis, photonics, energy conversion, and other applications. ...
    • openAccess   Photoluminescence emissions of Ca1−xWO4:xEu3+: Bridging between experiment and DFT calculations 

      Gouveia, Amanda; Assis, Marcelo de; Ribeiro , Lara Kelly; Brandão Lima, Aline Estefany; de Oliveira Gomes, Eduardo; Souza, Daniele; Galvão Gobato, Yara; Rosa, Ieda; Luz Jr, Geraldo; Guillamón, Eva; Longo, Elson; Andres, Juan; San-Miguel, Miguel A. Elsevier (2022-10-15)
      In this work, the impact of the doping process on the photoluminescence emission of CaWO4 as a function of the concentration of Eu3+ cation (0.01 mol%, 0.02 mol%, 0.04 mol%, 0.06 mol%, 0.08 mol%, and 0.10 mol%) is discussed ...
    • closedAccess   Potentiated Electron Transference in a-Ag2WO4 Microcrystals with Ag Nanofilaments as Microbial Agent 

      Longo, V. M.; Foggi, Camila Cristina; Ferrer, Mateus M.; Gouveia, Amanda; André, Rafaela S.; Avansi, Waldir; Vergani, Carlos; Machado Maciel, Ana Lúcia; Andres, Juan; Cavalcante, Laécio Santos; Hernandes, Antônio C.; Longo, Elson American Chemical Society (2014-02)
      This study is a framework proposal for understanding the antimicrobacterial effect of both α-Ag2WO4 microcrystals (AWO) synthesized using a microwave hydrothermal (MH) method and α-Ag2WO4 microcrystals with Ag metallic ...
    • openAccess   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 ...
    • 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   Selective Synthesis of α-, β-, and γ-Ag2WO4 Polymorphs: Promising Platforms for Photocatalytic and Antibacterial Materials 

      Alvarez Roca, Roman; Gouveia, Amanda; Foggi, Camila Cristina; Santana Lemos, Pablo; Gracia, Lourdes; da Silva, Luís; Vergani, Carlos; San-Miguel, Miguel A.; Longo, Elson; Andres, Juan American Chemical Society (2021-01-18)
      Silver tungstate (Ag2WO4) shows structural polymorphism with different crystalline phases, namely, orthorhombic, hexagonal, and cubic structures that are commonly known as α, β, and γ, respectively. In this work, these ...
    • openAccess   Structural investigation and sonophotocatalytic properties of the solid solutions Sr(Mo1−xWx)O4 crystals synthesized by the sonochemical method 

      de Sousa, P. B.; Nogueira, I. C.; Gusmão, G. O.M.; Gusmão, S. B.S.; Lopes, F.H.P.; Sousa, B. S.; Sczancoski, Júlio César; Gouveia, Amanda; Cavalcante, Laécio Santos Springer (2022-09-18)
      In this paper, the solid solutions of strontium molybdate-tungstate [Sr(Mo1−xWx)O4] crystals with (x = 0, 0.25, 0.50, 0.75, and 1) were synthesized by the sonochemical method. Their structure, morphology, optical, and ...
    • 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 ...
    • 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 ...
    • openAccess   The hinge morphology of SnO2 as multifunctional semiconductor: What we can learn from simulations, theory, and experiments 

      Gouveia, Amanda; Aldao, Celso M.; Ponce, Miguel A.; Leite, Edson R.; Longo, Elson; Andres, Juan Elsevier (2023-06-15)
      Our interaction with materials occurs through their surfaces whose properties are strongly dependent on morphology, structure, and atomic arrangement. Unfortunately, obtaining a detailed correlation between the surface ...
    • openAccess   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 ...
    • 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   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 ...