Browsing by Author "c88f4dbc-9448-4fe8-b65b-100aad732e56"

Now showing items 1-15 of 15

    • openAccess   alpha-Ag2-2xZnxWO4 (0 <= x <= 0.25) Solid Solutions: Structure, Morphology, and Optical Properties 

      Pereira, Paula; Santos, Clayane C.; Gouveia, Amanda; Ferrer, Mateus M.; Pinatti, Ivo M; Botelho, Gleice; Sambrano, Julio; Rosa, Ieda; Andres, Juan; Longo, Elson American Chemical Society (2017-06)
      A theoretical study was elaborated to support the experimental results of the Zn-doped α-Ag2WO4. Theses α-Ag2–2xZnxWO4 (0 ≤ x ≤ 0.25) solid solutions were obtained by coprecipitation method. X-ray diffraction data indicated ...

    • openAccess   Bioactive Ag3PO4/Polypropylene Composites for Inactivation of SARS-CoV?2 and Other Important Public Health Pathogens 

      Ribeiro , Lara Kelly; Assis, Marcelo de; R. Lima, Lais; Coelho, Dyovani; Gonçalves, Mariana O.; Paiva, Robert; Moraes, Leonardo N; Fogaça de Almeida, Lauana; Lipsky, Felipe; San-Miguel, Miguel A.; Mascaro, Lucia; Grotto, Rejane Maria Tommasini; Sousa, Cristina P; Rosa, Ieda; Cruz, Sandra A; Andres, Juan; Longo, Elson American Chemical Society (2021-09-21)
      The current unprecedented coronavirus pandemic (COVID-19) is increasingly demanding advanced materials and new technologies to protect us and inactivate SARS-CoV-2. In this research work, we report the manufacture of Ag3PO4 ...

    • openAccess   Effects of chemical substitution on the structural and optical properties of α-Ag 2− 2x Ni x WO 4 (0≤ x≤ 0.08) solid solutions. 

      Da Silva Pereira, Wyllamanney; Meneghetti Ferrer, Mateus; Botelho, Gleice; Gracia, Lourdes; Costa Nogueira, Içamira; Pinatti, Ivo M; Rosa, Ieda; de Almeida La Porta, Felipe; Andres, Juan; Longo, Elson Royal Society of Chemistry (2016)
      In this work, we investigated the effects of chemical substitution on the structural, electronic, and optical properties of α-Ag2−2xNixWO4 (0 ≤ x ≤ 0.08) solid solutions prepared by a facile microwave-assisted hydrothermal ...

    • openAccess   Engineering polycotton fiber surfaces, with an timicrobial activity against S. aureus, E. Coli, C. albicans and SARS-CoV-2 

      Tremiliosi, Guilherme; pagotto simoes, luiz gustavo; Minozzi, Daniel; Santos, Renato; Vilela, Daiane C. B.; Durigon, Edison; Machado, Rafael R. G.; Sales-Medina, Douglas Ferreira; Banari, Alexandre C.; Ribeiro , Lara Kelly; Rosa, Ieda; Assis, Marcelo de; Andres, Juan; Freitas-Junior, Lucio ScieniQ Publishers (2020-12-20)
      Pathogenic microorganisms are becoming a potential threat to the health of human beings and the environment worldwide. In this present study, we have developed a polycotton fiber, in which by incorporation and functionalization ...

    • openAccess   Experimental and theoretical study of the energetic, morphological, and photoluminescence properties of CaZrO3:Eu3+ 

      Carvalho de Oliveira, Marisa; Ribeiro, Renan; Gracia, Lourdes; de Lazaro, Sergio Ricardo; Assis, Marcelo de; Oliva, Mónica; Rosa, Ieda; Do Carmo Gurgel, Maria Fernanda; Longo, Elson; Andres, Juan Royal Society of Chemistry (2018)
      In this study, we present a combined experimental and theoretical study of the geometry, electronic structure, morphology, and photoluminescence properties of CaZrO3:Eu3+ materials. The polymeric precursor method was ...

    • 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   Mechanism of photoluminescence in intrinsically disordered CaZrO3 crystals: First principles modeling of the excited electronic states 

      Carvalho de Oliveira, Marisa; Gracia, Lourdes; Assis, Marcelo de; Rosa, Ieda; Do Carmo Gurgel, Maria Fernanda; Longo, Elson; Andres, Juan Elsevier (2017-10)
      CaZrO3 (CZO) powders obtained by the polymeric precursor method at 400 °C, and then, the samples were annealed at different temperatures (400, 600, 800, and 1000 °C) and characterized by X-ray diffraction, Raman and ...

    • 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 ...

    • openAccess   Photolumiscent properties of nanorods and nanoplates Y2O3:Eu3+ 

      De Moura, Ana Paula; De Oliveira, Larissa Helena; Paris, Elaine Cristina; Siu Li, Maximo; Andres, Juan; Arana Varela, José; Longo, Elson; Rosa, Ieda Springer Verlag (2011)
      Nanorods and nanoplates of Y2O3:Eu3+ powders were synthesized through the thermal decomposition of the Y(OH)3 precursors using a microwave-hydrothermal method in a very short reaction time. These powders were analyzed by ...

    • 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   Structure, Photoluminescence Emissions, and Photocatalytic Activity of Ag2SeO3: A Joint Experimental and Theoretical Investigation 

      Pinatti, Ivo M; Barrios Trench, Aline; Mora Tello, Ana Cristina; Pereira, Paula; Souza, Josiane C.; Teodoro, Marcio D.; Rosa, Ieda; Andres, Juan; Longo, Elson; Simoes, Alexandre Z. American Chemical Society (2021-04-19)
      In this paper, we report the synthesis of silver selenite (Ag2SeO3) by different methods [sonochemistry, ultrasonic probe, coprecipitation, and microwave-assisted hydrothermal methods]. These microcrystals presented a ...

    • 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   Tailoring Bi2MoO6 by Eu3+ incorporation for enhanced photoluminescence emissions 

      Pinatti, Ivo M; Pires, Fabio; Almeida, Priscila B.; Pereira, Paula; Daldin Teodoro, Marcio; Guillamón, Eva; Simões, Alexandre; Andres, Juan; Longo, Elson; Rosa, Ieda Elsevier (2021-12-13)
      Here, an experimental study is presented on the structural, electronic, and optical properties of Bi2-xMoO6:xEu3+ (x = 0, 0.5, 1.0, 2.0, and 4.0 mol%) materials, synthesized by means of the microwave-assisted solvothermal ...

    • openAccess   Towards a relationship between photoluminescence emissions and photocatalytic activity of Ag2SeO4: combining experimental data and theoretical insights 

      Pinatti, Ivo M; Mora Tello, Ana Cristina; Pereira, Paula; Barrios Trench, Aline; Daldin Teodoro, Marcio; Rosa, Ieda; da Silva, Albérico B. F.; Longo, Elson; Andres, Juan; Simões, Alexandre The Royal Society of Chemistry (2022-07-01)
      A systematic theoretical and experimental study was carried out to find a relationship between photoluminescence emissions and photocatalytic activity of Ag2SeO4 obtained by different synthesis methods (sonochemistry, ...

    • 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 ...