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Fragelli BDL, Assis M, Rodolpho JMA, Godoy KF, Líbero LO, Anibal FF, Longo E. Modulation of cell death mechanisms via α-Ag 2WO 4 morphology-dependent factors. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2024; 257:112947. [PMID: 38851043 DOI: 10.1016/j.jphotobiol.2024.112947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 05/09/2024] [Accepted: 05/27/2024] [Indexed: 06/10/2024]
Abstract
The cytotoxic of α-Ag2WO4 synthesized in different morphologies (cuboidal (AW-C), hexagonal rod-like (AW-HRL) and nanometric rod-like (AW-NRL) was analyzed to understand the impact of morphological modulation on the toxicity of 3 T3 cell lines in the dark and when photoactivated by visible light. Pathways of toxicity were examined, such as parameters and electrostatic interaction, uptake, ion release and ROS production. Cytotoxicity was observed for all samples after reaching concentrations exceeding 7.8 μg/mL. Uptake tests demonstrated that the samples were not internalized by cells, likely due to their negative surface charge. AW-NRL exhibited autophagy in the absence of light and during photoactivation, primarily attributed to its ability to generate singlet oxygen. Analyzing intercellular ROS and RNS production, AW-HRL induced an increase in NO through exposure to photo-generated hydroxyl radicals, while AW-NRL showed increases only at non-photoactivated concentrations and AW-C did not exhibit increases. Interestingly, in the dark, these cells showed a low propensity for apoptosis, with late apoptosis and necrosis being more pronounced. When photoactivated, this behavior changed, revealing predominantly apoptotic and late apoptotic cell death. There is a need for an understanding of how morphology can alter the biological properties of α-Ag2WO4 to predict and optimize its effects on cellular responses.
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Affiliation(s)
- Bruna D L Fragelli
- Center for Development of Functional Materials, Federal University of São Carlos (UFSCar), 13565-905 São Carlos, SP, Brazil.
| | - Marcelo Assis
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), 12071 Castelló, Spain.
| | - Joice M A Rodolpho
- Laboratory of Inflammation and Infectious Diseases, Department of Morphology and Pathology, Federal University of São Carlos (UFSCar), 13565-905 São Carlos, SP, Brazil
| | - Krissia F Godoy
- Laboratory of Inflammation and Infectious Diseases, Department of Morphology and Pathology, Federal University of São Carlos (UFSCar), 13565-905 São Carlos, SP, Brazil
| | - Laura O Líbero
- Center for Development of Functional Materials, Federal University of São Carlos (UFSCar), 13565-905 São Carlos, SP, Brazil
| | - Fernanda F Anibal
- Laboratory of Inflammation and Infectious Diseases, Department of Morphology and Pathology, Federal University of São Carlos (UFSCar), 13565-905 São Carlos, SP, Brazil
| | - Elson Longo
- Center for Development of Functional Materials, Federal University of São Carlos (UFSCar), 13565-905 São Carlos, SP, Brazil
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Cabral L, Leite ER, Longo E, San-Miguel MA, da Silva EZ, Andrés J. Disentangling the Effects of Laser and Electron Irradiation on AgX (X = Cl, Br, and I): Insights from Quantum Chemical Calculations. NANO LETTERS 2024; 24:3021-3027. [PMID: 38252876 DOI: 10.1021/acs.nanolett.3c04130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
The effects on the lattice structure and electronic properties of different polymorphs of silver halide, AgX (X = Cl, Br, and I), induced by laser irradiation (LI) and electron irradiation (EI) are investigated using a first-principles approach, based on the electronic temperature (Te) within a two-temperature model (TTM) and by increasing the total number of electrons (Ne), respectively. Ab initio molecular dynamics (AIMD) simulations provide a clear visualization of how Te and Ne induce a structural and electronic transformation process during LI/EI. Our results reveal the diffusion processes of Ag and X ions, the amorphization of the AgX lattices, and a straightforward interpretation of the time evolution for the formation of Ag and X nanoclusters under high values of Te and Ne. Overall, the present work provides fine details of the underlying mechanism of LI/EI and promises to be a powerful toolbox for further cross-scale modeling of other semiconductors.
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Affiliation(s)
- Luis Cabral
- Institute of Physics Gleb Wataghin (IFGW), Universidade Estadual de Campinas, Campinas, 13083-859 SP, Brazil
- Department of Physical and Analytical Chemistry, University Jaume I (UJI), Castelló 12071, Spain
| | - Edson R Leite
- Laboratório Nacional de Nanotecnologia (LNNano), CNPEM, Campinas, 13083-970 SP, Brazil
- LIEC-CDMF, Department of Chemistry, Universidade Federal de São Carlos, São Carlos, 13565-905 SP, Brazil
| | - Elson Longo
- LIEC-CDMF, Department of Chemistry, Universidade Federal de São Carlos, São Carlos, 13565-905 SP, Brazil
| | - Miguel A San-Miguel
- Department of Physical-Chemistry, Institute of Chemistry, Universidade Estadual de Campinas, Campinas, 13083-970 SP, Brazil
| | - Edison Z da Silva
- Institute of Physics Gleb Wataghin (IFGW), Universidade Estadual de Campinas, Campinas, 13083-859 SP, Brazil
| | - Juan Andrés
- Laboratório Nacional de Nanotecnologia (LNNano), CNPEM, Campinas, 13083-970 SP, Brazil
- Department of Physical and Analytical Chemistry, University Jaume I (UJI), Castelló 12071, Spain
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3
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Patrocinio KL, Santos JR, Granone LI, Ponce MA, Churio MS, Ribeiro LK, Teodoro MD, Llusar R, Andrés J, Longo E, Assis M. Tuning the morphology to enhance the catalytic activity of α-Ag 2WO 4 through V-doping. Dalton Trans 2023; 52:14982-14994. [PMID: 37811730 DOI: 10.1039/d3dt02352d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
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 catalysts with 0.01% V-doping content exhibited outstanding selectivity towards the oxidation process. Scavenger experiments indicated the direct involvement of electron-hole (e-/h+) pairs, hydroxyl radical (˙OH), and singlet oxygen (1O2) in the catalytic mechanism. Based on the experimental and theoretical results, the higher activity of the V-doped α-Ag2WO4 samples was associated with the preferential formation of the (100) surface in the catalyst morphology.
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Affiliation(s)
- Katiana Lima Patrocinio
- CDMF-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905, São Carlos, SP, Brazil
| | - Jeziel Rodrigues Santos
- CDMF-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905, São Carlos, SP, Brazil
| | - Luis Ignacio Granone
- Departamento de Química y Bioquímica, Facultad de Ciencias Exactas y Naturales, Instituto de Investigaciones Físicas de Mar del Plata (IFIMAR), CONICET, Universidad Nacional de Mar del Plata (UNMdP), Mar del Plata, 7600, Argentina
| | - Miguel Adolfo Ponce
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Universidad Nacional de Mar del Plata (UNMdP), Mar del Plata, 7600, Argentina
- Physics and Engineering Research Center CIFICEN (CICPBA-CONICET), National University of the Center of the Province of Buenos Aires (UNCPBA), Tandil, B7000GHG, Argentina
| | - Maria Sandra Churio
- Departamento de Química y Bioquímica, Facultad de Ciencias Exactas y Naturales, Instituto de Investigaciones Físicas de Mar del Plata (IFIMAR), CONICET, Universidad Nacional de Mar del Plata (UNMdP), Mar del Plata, 7600, Argentina
| | - Lara Kelly Ribeiro
- CDMF-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905, São Carlos, SP, Brazil
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), Castelló, 12071, Spain.
| | - Marcio Daldin Teodoro
- Department of Physics, Federal University of São Carlos, São Carlos, SP 13565-905, Brazil
| | - Rosa Llusar
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), Castelló, 12071, Spain.
| | - Juan Andrés
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), Castelló, 12071, Spain.
| | - Elson Longo
- CDMF-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905, São Carlos, SP, Brazil
| | - Marcelo Assis
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), Castelló, 12071, Spain.
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Pimentel BNADS, De Annunzio SR, Assis M, Barbugli PA, Longo E, Vergani CE. Biocompatibility and inflammatory response of silver tungstate, silver molybdate, and silver vanadate microcrystals. Front Bioeng Biotechnol 2023; 11:1215438. [PMID: 37545886 PMCID: PMC10399690 DOI: 10.3389/fbioe.2023.1215438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 07/12/2023] [Indexed: 08/08/2023] Open
Abstract
Silver tungstate (α-Ag2WO4), silver molybdate (β-Ag2MoO4), and silver vanadate (α-AgVO3) microcrystals have shown interesting antimicrobial properties. However, their biocompatibility is not yet fully understood. Cytotoxicity and the inflammatory response of silver-containing microcrystals were analyzed in THP-1 and THP-1 differentiated as macrophage-like cells, with the alamarBlue™ assay, flow cytometry, confocal microscopy, and ELISA. The present investigation also evaluated redox signaling and the production of cytokines (TNFα, IL-1β, IL-6, and IL-8) and matrix metalloproteinases (MMP-8 and -9). The results showed that α-AgVO3 (3.9 μg/mL) did not affect cell viability (p > 0.05). α-Ag2WO4 (7.81 μg/mL), β-Ag2MoO4 (15.62 μg/mL), and α-AgVO3 (15.62 μg/mL) slightly decreased cell viability (p ≤ 0.003). All silver-containing microcrystals induced the production of O2 - and this effect was mitigated by Reactive Oxygen Species (ROS) scavenger and N-acetylcysteine (NAC). TNFα, IL-6 and IL-1β were not detected in THP-1 cells, while their production was either lower (p ≤ 0.0321) or similar to the control group (p ≥ 0.1048) for macrophage-like cells. The production of IL-8 by both cellular phenotypes was similar to the control group (p ≥ 0.3570). The release of MMP-8 was not detected in any condition in THP-1 cells. Although MMP-9 was released by THP-1 cells exposed to α-AgVO3 (3.9 μg/mL), no significant difference was found with control (p = 0.7). Regarding macrophage-like cells, the release of MMP-8 and -9 decreased in the presence of all microcrystals (p ≤ 0.010). Overall, the present work shows a promising biocompatibility profile of, α-Ag2WO4, β-Ag2MoO4, and α-AgVO3 microcrystals.
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Affiliation(s)
| | | | - Marcelo Assis
- Departament of Physical and Analytical Chemistry, University Jaume I (UJI), Castelló, Spain
| | | | - Elson Longo
- CDMF, Federal University of São Carlos (UFSCar), São Carlos, Brazil
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Mgidlana S, Sen P, Nyokong T. Dual action of asymmetrical zinc(II) phthalocyanines conjugated to silver tungstate nanoparticles towards photodegradation of tetracycline and inactivation of Staphylococcus aureus bacteria. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Assis M, da Silva JS, Gonçalves MO, de Almeida Rodolpho JM, de Lima Fragelli BD, Corte ABP, Ribeiro LK, Teodoro MD, de Freitas Anibal F, de Sousa CP, Oliveira ON, Andrés J, Longo E. Bactericidal activity of Ag 4V 2O 7/β-AgVO 3 heterostructures against antibiotic-resistant Klebsiella pneumoniae. BIOMATERIALS ADVANCES 2022; 141:213097. [PMID: 36067643 DOI: 10.1016/j.bioadv.2022.213097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/26/2022] [Accepted: 08/24/2022] [Indexed: 06/15/2023]
Abstract
Although Ag-based materials are efficient against antibiotic-resistant bacteria, their high toxicity to living organisms represents a major challenge for obtaining useful products. In this work, we report the bactericidal activity of Ag4V2O7/β-AgVO3 heterostructures, which proved to be effective against Klebsiella pneumoniae (ATCC 1706, a standard strain; A54970, a multidrug-resistant carbapenemase (KPC)-producing strain; A34057, a multidrug-resistant strain capable of producing extended spectrum beta-lactamases (ESBL); and a community-isolated strain, A58240) at minimum inhibitory concentrations (MIC) as low as 62.5 μg/mL. This activity is higher than that reported for the individual silver vanadates (Ag4V2O7 or β-AgVO3) owing to the synergistic interactions between both semiconductors. However, the most efficient heterostructure was found to be toxic to mouse 3 T3 fibroblasts and to L. sativa and C. sativus seeds, as indicated by MTT ((4,5 - dimethylthiazol -2yl) 2,5 -diphenylbromide), neutral red assays and germination index measurements. The antimicrobial, phytotoxic and cytotoxic activities were all associated with an efficient generation of reactive oxygen species (ROS) in the heterostructure, especially OH and O2- radicals. The ROS production by Ag4V2O7/β-AgVO3 heterostructures was measured through photodegradation studies with Rhodamine B. While the bactericidal activity of the heterostructures is promising, especially when compared to Ag-based materials, their use in practical applications will require encapsulation either to avoid leaching or to mitigate their toxicity to humans, animals and plants.
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Affiliation(s)
- Marcelo Assis
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), 12071 Castelló, Spain; CDMF, LIEC, Federal University of São Carlos (UFSCar), 13565-905 São Carlos, SP, Brazil; São Carlos Institute of Physics, University of São Paulo (USP), 13560-970 São Carlos, SP, Brazil.
| | | | | | - Joice Margareth de Almeida Rodolpho
- Laboratory of Inflammation and Infectious Diseases, Department of Morphology and Pathology, Federal University of São Carlos (UFSCar), 13565-905 São Carlos, SP, Brazil
| | - Bruna Dias de Lima Fragelli
- Laboratory of Inflammation and Infectious Diseases, Department of Morphology and Pathology, Federal University of São Carlos (UFSCar), 13565-905 São Carlos, SP, Brazil
| | | | - Lara Kelly Ribeiro
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), 12071 Castelló, Spain; CDMF, LIEC, Federal University of São Carlos (UFSCar), 13565-905 São Carlos, SP, Brazil
| | - Marcio Daldin Teodoro
- Physics Department, Federal University of São Carlos (UFSCar), 13565-905 São Carlos, SP, Brazil
| | - Fernanda de Freitas Anibal
- Laboratory of Inflammation and Infectious Diseases, Department of Morphology and Pathology, Federal University of São Carlos (UFSCar), 13565-905 São Carlos, SP, Brazil
| | | | - Osvaldo N Oliveira
- São Carlos Institute of Physics, University of São Paulo (USP), 13560-970 São Carlos, SP, Brazil
| | - Juan Andrés
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), 12071 Castelló, Spain
| | - Elson Longo
- CDMF, LIEC, Federal University of São Carlos (UFSCar), 13565-905 São Carlos, SP, Brazil
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7
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Pereira PFS, de Paula E Silva ACA, da Silva Pimentel BNA, Pinatti IM, Simões AZ, Vergani CE, Barreto-Vieira DF, da Silva MAN, Miranda MD, Monteiro MES, Tucci A, Doñate-Buendía C, Mínguez-Vega G, Andrés J, Longo E. Inactivation of SARS-CoV-2 by a chitosan/α-Ag 2WO 4 composite generated by femtosecond laser irradiation. Sci Rep 2022; 12:8118. [PMID: 35581241 PMCID: PMC9114143 DOI: 10.1038/s41598-022-11902-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 02/22/2022] [Indexed: 12/23/2022] Open
Abstract
In the current COVID-19 pandemic, the next generation of innovative materials with enhanced anti-SARS-CoV-2 activity is urgently needed to prevent the spread of this virus within the community. Herein, we report the synthesis of chitosan/α-Ag2WO4 composites synthetized by femtosecond laser irradiation. The antimicrobial activity against Escherichia coli, Methicilin-susceptible Staphylococcus aureus (MSSA), and Candida albicans was determined by estimating the minimum inhibitory concentration (MIC) and minimal bactericidal/fungicidal concentration (MBC/MFC). To assess the biocompatibility of chitosan/α-Ag2WO4 composites in a range involving MIC and MBC/MFC on keratinocytes cells (NOK-si), an alamarBlue™ assay and an MTT assay were carried out. The SARS-CoV-2 virucidal effects was analyzed in Vero E6 cells through viral titer quantified in cell culture supernatant by PFU/mL assay. Our results showed a very similar antimicrobial activity of chitosan/α-Ag2WO4 3.3 and 6.6, with the last one demonstrating a slightly better action against MSSA. The chitosan/α-Ag2WO4 9.9 showed a wide range of antimicrobial activity (0.49-31.25 µg/mL). The cytotoxicity outcomes by alamarBlue™ revealed that the concentrations of interest (MIC and MBC/MFC) were considered non-cytotoxic to all composites after 72 h of exposure. The Chitosan/α-Ag2WO4 (CS6.6/α-Ag2WO4) composite reduced the SARS-CoV-2 viral titer quantification up to 80% of the controls. Then, our results suggest that these composites are highly efficient materials to kill bacteria (Escherichia coli, Methicillin-susceptible Staphylococcus aureus, and the yeast strain Candida albicans), in addition to inactivating SARS-CoV-2 by contact, through ROS production.
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Affiliation(s)
- Paula Fabiana Santos Pereira
- CDMF, LIEC, Department of Chemistry, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos, SP, 13565-905, Brazil.,Department of Physical and Analytical Chemistry, University Jaume I (UJI), 12071, Castelló, Spain
| | - Ana Carolina Alves de Paula E Silva
- Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), 1680 Humaitá Street, Araraquara, SP, 14801-903, Brazil
| | - Bruna Natália Alves da Silva Pimentel
- Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), 1680 Humaitá Street, Araraquara, SP, 14801-903, Brazil
| | - Ivo Mateus Pinatti
- Department of Physical and Analytical Chemistry, University Jaume I (UJI), 12071, Castelló, Spain.,Faculty of Engineering of Guaratinguetá, São Paulo State University (UNESP), Guaratinguetá, SP, 12516-410, Brazil
| | - Alexandre Zirpoli Simões
- Faculty of Engineering of Guaratinguetá, São Paulo State University (UNESP), Guaratinguetá, SP, 12516-410, Brazil
| | - Carlos Eduardo Vergani
- Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), 1680 Humaitá Street, Araraquara, SP, 14801-903, Brazil
| | - Débora Ferreira Barreto-Vieira
- Laboratory of Viral Morphology and Morphogenesis, Oswaldo Cruz Institute, Fiocruz, Avenida Brasil, Rio de Janeiro, Brazil
| | | | - Milene Dias Miranda
- Laboratory of Respiratory Viruses and Measles, Oswaldo Cruz Institute, Fiocruz, Avenida Brasil, Rio de Janeiro, Brazil
| | - Maria Eduarda Santos Monteiro
- Laboratory of Respiratory Viruses and Measles, Oswaldo Cruz Institute, Fiocruz, Avenida Brasil, Rio de Janeiro, Brazil
| | - Amanda Tucci
- Laboratory of Respiratory Viruses and Measles, Oswaldo Cruz Institute, Fiocruz, Avenida Brasil, Rio de Janeiro, Brazil
| | - Carlos Doñate-Buendía
- GROC UJI, Institute of New Imaging Technologies, Universitat Jaume I, Avda. Sos Baynat sn, 12071, Castellón de la Plana, Spain.,Materials Science and Additive Manufacturing, University of Wuppertal, Gaußstr. 20, 42119, Wuppertal, Germany
| | - Gladys Mínguez-Vega
- GROC UJI, Institute of New Imaging Technologies, Universitat Jaume I, Avda. Sos Baynat sn, 12071, Castellón de la Plana, Spain
| | - Juan Andrés
- Department of Physical and Analytical Chemistry, University Jaume I (UJI), 12071, Castelló, Spain
| | - Elson Longo
- CDMF, LIEC, Department of Chemistry, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos, SP, 13565-905, Brazil.
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8
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Pimentel BNADS, Marin-Dett FH, Assis M, Barbugli PA, Longo E, Vergani CE. Antifungal Activity and Biocompatibility of α-AgVO 3, α-Ag 2WO 4, and β-Ag 2MoO 4 Using a Three-Dimensional Coculture Model of the Oral Mucosa. Front Bioeng Biotechnol 2022; 10:826123. [PMID: 35237581 PMCID: PMC8883331 DOI: 10.3389/fbioe.2022.826123] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 01/05/2022] [Indexed: 11/18/2022] Open
Abstract
Fungal infections have become a major concern in the medical community, especially those caused by Candida spp. Within this species, Candida albicans stands out for being an opportunistic commensal fungus that can cause superficial and invasive infections. Current antifungal therapy involves the local and/or systemic use of drugs such as azoles, polyenes, and echinocandins. These antifungals are based on highly specific target sites, and the development of resistance may occur with changes in the enzymatic pathways that serve as the drug targets. Thus, the development of new antifungal drugs is highly recommended to prevent drug resistance. The present investigation evaluated the antifungal activity of silver-containing microcrystals such as silver vanadate (α-AgVO3), silver tungstate (α-Ag2WO4), and silver molybdate (β-Ag2MoO4). In addition to having antimicrobial activity, such compounds should not cause damage to underlying tissues. Thus, to better assess the biocompatibility of new compounds, a new three-dimensional (3D) coculture model involving three cell lines was developed. The validation of the model was based on fluorescent markers and confocal laser microscopy. The biocompatibility of silver-containing microcrystals was evaluated by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay. 3D coculture was infected with C. albicans biofilm and challenged with α-AgVO3, α-Ag2WO4, and β-Ag2MoO4. The action of microcrystals on C. albicans biofilm was evaluated by colony-forming units (CFU/ml) and LIVE/DEAD staining. In addition, production of proinflammatory cytokines interleukin 6 (IL-6), IL-8, IL-1β, and tumor necrosis factor α (TNF-α) was measured by cytometric bead array kit using flow cytometry. The 3D coculture model described here proved to be adequate to assess both the biocompatibility of the new materials and the infectious processes. Regarding the biocompatibility of the microcrystals, only α-AgVO3 (15.62 µg/ml) showed a decrease in cell viability. The antibiofilm activity of α-Ag2WO4 was similar to that of the standard drug (fluconazole). Although α-Ag2WO4 was able to induce the production of IL-6, IL-8, and IL-1β, no differences in cytokine production were observed between noninfected and infected models treated with this microcrystal. β-Ag2MoO4 inhibits the production of TNF-α in the infected model; however, it showed no antibiofilm activity. Based on the biocompatibility and antifungal findings, α-Ag2WO4 is a promising material for treating C. albicans infection.
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Affiliation(s)
- Bruna Natália Alves da Silva Pimentel
- Laboratory of Applied Microbiology, Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), Araraquara, Brazil
| | - Freddy Humberto Marin-Dett
- Department of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, Brazil
| | - Marcelo Assis
- CDMF, LIEC, Chemistry Department, Federal University of São Carlos (UFSCar), São Carlos, Brazil
| | - Paula Aboud Barbugli
- Laboratory of Applied Microbiology, Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), Araraquara, Brazil.,Department of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, Brazil
| | - Elson Longo
- CDMF, LIEC, Chemistry Department, Federal University of São Carlos (UFSCar), São Carlos, Brazil
| | - Carlos Eduardo Vergani
- Laboratory of Applied Microbiology, Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), Araraquara, Brazil
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9
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Abreu CBD, Gebara RC, Reis LLD, Rocha GS, Alho LDOG, Alvarenga LM, Virtuoso LS, Assis M, Mansano ADS, Longo E, Melão MDGG. Toxicity of α-Ag 2WO 4 microcrystals to freshwater microalga Raphidocelis subcapitata at cellular and population levels. CHEMOSPHERE 2022; 288:132536. [PMID: 34637867 DOI: 10.1016/j.chemosphere.2021.132536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 10/07/2021] [Accepted: 10/08/2021] [Indexed: 05/29/2023]
Abstract
Silver-based materials have microbicidal action, photocatalytic activity and electronic properties. The increase in manufacturing and consumption of these compounds, given their wide functionality and application, is a source of contamination to freshwater ecosystems and causes toxicity to aquatic biota. Therefore, for the first time, we evaluated the toxicity of the silver tungstate (α-Ag2WO4), in different morphologies (cube and rod), for the microalga Raphidocelis subcapitata. To investigate the toxicity, we evaluated the growth rate, cell complexity and size, reactive oxygen species (ROS) production and chlorophyll a (Chl a) fluorescence. The α-Ag2WO4 - R (rod) was 1.7 times more toxic than α-Ag2WO4-C (cube), with IC10 and IC50 values of, respectively, 8.68 ± 0.91 μg L-1 and 13.72 ± 1.48 μg L-1 for α-Ag2WO4 - R and 18.60 ± 1.61 μg L-1 and 23.47 ± 1.16 μg L-1 for α-Ag2WO4-C. The release of silver ions was quantified and indicated that the silver ions dissolution from the α-Ag2WO4 - R ranged from 34 to 71%, while the Ag ions from the α-Ag2WO4-C varied from 35 to 97%. The α-Ag2WO4-C induced, after 24 h exposure, the increase of ROS at the lowest concentrations (8.81 and 19.32 μg L-1), whereas the α-Ag2WO4 - R significantly induced ROS production at 96 h at the highest concentration (31.76 μg L-1). Both microcrystal shapes significantly altered the cellular complexity and decreased the Chl a fluorescence at all tested concentrations. We conclude that the different morphologies of α-Ag2WO4 negatively affect the microalga and are important sources of silver ions leading to harmful consequences to the aquatic ecosystem.
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Affiliation(s)
- Cínthia Bruno de Abreu
- Department of Hydrobiology, Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil; Post-Graduate Program in Ecology and Natural Resources (PPGERN), Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil.
| | - Renan Castelhano Gebara
- Department of Hydrobiology, Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil; Post-Graduate Program in Ecology and Natural Resources (PPGERN), Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil
| | - Larissa Luiza Dos Reis
- Department of Hydrobiology, Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil; Post-Graduate Program in Ecology and Natural Resources (PPGERN), Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil
| | - Giseli Swerts Rocha
- Department of Hydraulic and Sanitation (NEEA/CRHEA/SHS), São Carlos School of Engineering, University of São Paulo, Avenida Trabalhador São-Carlense 400, 13560-970, São Carlos, SP, Brazil
| | - Lays de Oliveira Gonçalves Alho
- Department of Hydrobiology, Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil; Post-Graduate Program in Ecology and Natural Resources (PPGERN), Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil
| | - Laís Mendes Alvarenga
- Chemistry Institute - Federal University of Alfenas (UNIFAL-MG), Gabriel Monteiro da Silva, 700, Centro, 37130-000, Alfenas, MG, Brazil
| | - Luciano Sindra Virtuoso
- Chemistry Institute - Federal University of Alfenas (UNIFAL-MG), Gabriel Monteiro da Silva, 700, Centro, 37130-000, Alfenas, MG, Brazil
| | - Marcelo Assis
- Center for Development of Functional Materials (CDMF), Federal University of São Carlos - (UFSCar), P.O, Box 676, 13565-905, São Carlos, SP, Brazil
| | - Adrislaine da Silva Mansano
- Department of Hydrobiology, Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil; Post-Graduate Program in Ecology and Natural Resources (PPGERN), Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil
| | - Elson Longo
- Center for Development of Functional Materials (CDMF), Federal University of São Carlos - (UFSCar), P.O, Box 676, 13565-905, São Carlos, SP, Brazil
| | - Maria da Graça Gama Melão
- Department of Hydrobiology, Federal University of São Carlos (UFSCar), Rodovia Washington Luís, Km 235, 13565-905, São Carlos, SP, Brazil
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10
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Abstract
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 fabrication of polyvinyl chloride (PVC)-SiO2-Ag composite is presented, in which the percentage of Ag is 0.84% wt. Our findings render that this composite eliminates (> 99.8%) bacteria and fungus (Staphylococcus aureus, Escherichia coli, Penicillium funiculosum) and SARS-CoV-2, by surface contact in 2 h hours and 15 min, respectively. Specific migration analysis shown that the use of the PVC-SiO2-Ag composite is considered safe and effective for food preservation. This research and innovation front can be considered a breakthrough for the design of biocide materials. Future directions for this exciting and highly significant research field can open the door to the development of new technologies for the fabrication of packaging films to protect consumer products (such as fruits, vegetables, and other foods).
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11
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Assis M, Simoes LGP, Tremiliosi GC, Coelho D, Minozzi DT, Santos RI, Vilela DCB, do Santos JR, Ribeiro LK, Rosa ILV, Mascaro LH, Andrés J, Longo E. SiO 2-Ag Composite as a Highly Virucidal Material: A Roadmap that Rapidly Eliminates SARS-CoV-2. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:638. [PMID: 33806671 PMCID: PMC8001031 DOI: 10.3390/nano11030638] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 02/22/2021] [Accepted: 02/26/2021] [Indexed: 02/07/2023]
Abstract
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, constituting the forefront of current global safety concerns and a significant burden on global economies. The development of innovative materials able to prevent the transmission, spread, and entry of COVID-19 pathogens into the human body is currently in the spotlight. The synthesis of these materials is, therefore, gaining momentum, as methods providing nontoxic and environmentally friendly procedures are in high demand. Here, a highly virucidal material constructed from SiO2-Ag composite immobilized in a polymeric matrix (ethyl vinyl acetate) is presented. The experimental results indicated that the as-fabricated samples exhibited high antibacterial activity towards Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) as well as towards SARS-CoV-2. Based on the present results and radical scavenger experiments, we propose a possible mechanism to explain the enhancement of the biocidal activity. In the presence of O2 and H2O, the plasmon-assisted surface mechanism is the major reaction channel generating reactive oxygen species (ROS). We believe that the present strategy based on the plasmonic effect would be a significant contribution to the design and preparation of efficient biocidal materials. This fundamental research is a precedent for the design and application of adequate technology to the next-generation of antiviral surfaces to combat SARS-CoV-2.
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Affiliation(s)
- Marcelo Assis
- CDMF, LIEC, Federal University of São Carlos—(UFSCar), 13565-905 São Carlos, SP, Brazil; (M.A.); (D.C.); (J.R.d.S.); (L.K.R.); (I.L.V.R.); (L.H.M.); (E.L.)
- Department of Physical and Analytical Chemistry, University Jaume I (UJI), 12071 Castellon, Spain
| | - Luiz Gustavo P. Simoes
- Nanox Tecnologia S/A, 13562-400 São Carlos, SP, Brazil; (L.G.P.S.); (G.C.T.); (D.T.M.); (R.I.S.); (D.C.B.V.)
| | - Guilherme C. Tremiliosi
- Nanox Tecnologia S/A, 13562-400 São Carlos, SP, Brazil; (L.G.P.S.); (G.C.T.); (D.T.M.); (R.I.S.); (D.C.B.V.)
| | - Dyovani Coelho
- CDMF, LIEC, Federal University of São Carlos—(UFSCar), 13565-905 São Carlos, SP, Brazil; (M.A.); (D.C.); (J.R.d.S.); (L.K.R.); (I.L.V.R.); (L.H.M.); (E.L.)
| | - Daniel T. Minozzi
- Nanox Tecnologia S/A, 13562-400 São Carlos, SP, Brazil; (L.G.P.S.); (G.C.T.); (D.T.M.); (R.I.S.); (D.C.B.V.)
| | - Renato I. Santos
- Nanox Tecnologia S/A, 13562-400 São Carlos, SP, Brazil; (L.G.P.S.); (G.C.T.); (D.T.M.); (R.I.S.); (D.C.B.V.)
| | - Daiane C. B. Vilela
- Nanox Tecnologia S/A, 13562-400 São Carlos, SP, Brazil; (L.G.P.S.); (G.C.T.); (D.T.M.); (R.I.S.); (D.C.B.V.)
| | - Jeziel Rodrigues do Santos
- CDMF, LIEC, Federal University of São Carlos—(UFSCar), 13565-905 São Carlos, SP, Brazil; (M.A.); (D.C.); (J.R.d.S.); (L.K.R.); (I.L.V.R.); (L.H.M.); (E.L.)
| | - Lara Kelly Ribeiro
- CDMF, LIEC, Federal University of São Carlos—(UFSCar), 13565-905 São Carlos, SP, Brazil; (M.A.); (D.C.); (J.R.d.S.); (L.K.R.); (I.L.V.R.); (L.H.M.); (E.L.)
| | - Ieda Lucia Viana Rosa
- CDMF, LIEC, Federal University of São Carlos—(UFSCar), 13565-905 São Carlos, SP, Brazil; (M.A.); (D.C.); (J.R.d.S.); (L.K.R.); (I.L.V.R.); (L.H.M.); (E.L.)
| | - Lucia Helena Mascaro
- CDMF, LIEC, Federal University of São Carlos—(UFSCar), 13565-905 São Carlos, SP, Brazil; (M.A.); (D.C.); (J.R.d.S.); (L.K.R.); (I.L.V.R.); (L.H.M.); (E.L.)
| | - Juan Andrés
- Department of Physical and Analytical Chemistry, University Jaume I (UJI), 12071 Castellon, Spain
| | - Elson Longo
- CDMF, LIEC, Federal University of São Carlos—(UFSCar), 13565-905 São Carlos, SP, Brazil; (M.A.); (D.C.); (J.R.d.S.); (L.K.R.); (I.L.V.R.); (L.H.M.); (E.L.)
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12
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Mohamed MM, El-Farsy H. Rapid reduction of nitroarenes photocatalyzed by an innovative Mn 3O 4/α-Ag 2WO 4 nanoparticles. Sci Rep 2020; 10:21495. [PMID: 33299028 PMCID: PMC7725972 DOI: 10.1038/s41598-020-78542-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 11/10/2020] [Indexed: 11/22/2022] Open
Abstract
A novel photocatalyst based on the design of P-N heterojunction between hollow spherical Mn3O4 and nanorods shape of α-Ag2WO4 is synthesized using a sonication-deposition-precipitation route. The nanocomposite Mn3O4/α-Ag2WO4(60%) exhibits a great potential towards nitroarenes (including 4-nitrophenol, 4-nitro-aniline and 4-Nitro-acetanilide) reduction under visible light irradiation exceeding that of Mn3O4/α-Ag2WO4(40%) as well as their individual counterparts (3-5%). The Mn3O4/α-Ag2WO4(60%) catalyst exhibited an excellent photo-reduction activity comprised of 0.067 s-1 towards 4-nitrophenol (0.001 M) in only 60 s reaction time using NaBH4 (0.2 M). This was due to the successful formation of the Mn3O4/α-Ag2WO4 composite as validated by XRD, TEM-SAED, XPS, FTIR, UV-Vis diffuse reflectance and PL techniques. Decreasing the Eg value into 2.7 eV, the existence of a new (151) plane in the composite beside enhancement of the composite electrical conductivity (1.66 × 10-7 Ω-1 cm-1) helps the facile nitroarenes adsorption and hydrogenation. Transient photocurrent response and linear sweep voltammetry results prove the facilitation of photogenerated charge carriers separation and transport via improving electron lifetime and lessening recombination rate. The composite photocatalyst produced higher amounts of H2 production, when inserted in a typical reaction medium containing NaBH4, comprised of 470 µ mole/g exceeding those of the counterparts (35 µ mole/g). This photocatalyst is strikingly hydrogenated 4-nitrophenol under mild conditions (25 °C and 0.35 MPa pressure of H2) with magnificent rate constant equal 34.9 × 10-3 min-1 with 100% selectivity towards 4-aminophenol.
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Affiliation(s)
| | - Hassan El-Farsy
- Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt
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13
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Laier LO, Assis M, Foggi CC, Gouveia AF, Vergani CE, Santana LCL, Cavalcante LS, Andrés J, Longo E. Surface-dependent properties of α-Ag2WO4: a joint experimental and theoretical investigation. Theor Chem Acc 2020. [DOI: 10.1007/s00214-020-02613-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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14
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Assis M, Pontes Ribeiro RA, Carvalho MH, Teixeira MM, Gobato YG, Prando GA, Mendonça CR, de Boni L, Aparecido de Oliveira AJ, Bettini J, Andrés J, Longo E. Unconventional Magnetization Generated from Electron Beam and Femtosecond Irradiation on α-Ag 2WO 4: A Quantum Chemical Investigation. ACS OMEGA 2020; 5:10052-10067. [PMID: 32391493 PMCID: PMC7203983 DOI: 10.1021/acsomega.0c00542] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 04/13/2020] [Indexed: 05/29/2023]
Abstract
Novel magnetic metals and metal oxides that use both the spin and charge of an electron offer exciting technological applications. Their discovery could boost research on functional nanoscale materials. Here, for the first time, we report the magnetization of α-Ag2WO4 under electron beam and femtosecond laser irradiation. The formation and growth of silver oxides (AgO, Ag2O, and Ag3O4) and Ag nanofilaments can be observed on the surface of α-Ag2WO4 crystals. These features were also present in the composition of an extruded material and could open new avenues for surface magnetism studies. In order to understand these results, we used first-principles density functional theory calculations. This allowed us to investigate several potential scenarios for controlling magnetic properties. The effect of electron addition on the crystalline structures of α-Ag2WO4, Ag3O4, Ag2O, and AgO has been analyzed in detail. The creation of Ag and O vacancies on these compounds was also analyzed. Based on structural and electronic changes at the local coordination site of Ag, a mechanism was proposed. The mechanism illustrates the processes responsible for the formation and growth of metallic Ag and the magnetic response to electron beam irradiation.
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Affiliation(s)
- Marcelo Assis
- CDMF,
LIEC, Chemistry Department, Federal University
of São Carlos—(UFSCar), P.O. Box 676, 13565-905 São
Carlos, São Paulo, Brazil
| | - Renan Augusto Pontes Ribeiro
- CDMF,
LIEC, Chemistry Department, Federal University
of São Carlos—(UFSCar), P.O. Box 676, 13565-905 São
Carlos, São Paulo, Brazil
| | - Maria Helena Carvalho
- Physics
Department, Federal University of São
Carlos—(UFSCar), P.O. Box 676, 13565-905 São Carlos, São Paulo, Brazil
| | - Mayara Mondego Teixeira
- CDMF,
LIEC, Chemistry Department, Federal University
of São Carlos—(UFSCar), P.O. Box 676, 13565-905 São
Carlos, São Paulo, Brazil
| | - Yara Galvão Gobato
- Physics
Department, Federal University of São
Carlos—(UFSCar), P.O. Box 676, 13565-905 São Carlos, São Paulo, Brazil
| | - Gabriela Augusta Prando
- Physics
Department, Federal University of São
Carlos—(UFSCar), P.O. Box 676, 13565-905 São Carlos, São Paulo, Brazil
| | - Cleber Renato Mendonça
- IFSC—Instituto
de Física de São Carlos, Universidade
de São Paulo—(USP), 13566-590 São Carlos, São Paulo, Brazil
| | - Leonardo de Boni
- IFSC—Instituto
de Física de São Carlos, Universidade
de São Paulo—(USP), 13566-590 São Carlos, São Paulo, Brazil
| | | | - Jefferson Bettini
- Brazilian
Nanotechnology National Laboratory (LNNano), Rua Giuseppe Maximo Scolfa no 10000, BR-13083100 Campinas, São Paulo, Brazil
| | - Juan Andrés
- Department
of Analytical and Physical Chemistry, University
Jaume I (UJI), 12071 Castelló, Spain
| | - Elson Longo
- CDMF,
LIEC, Chemistry Department, Federal University
of São Carlos—(UFSCar), P.O. Box 676, 13565-905 São
Carlos, São Paulo, Brazil
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15
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Pinatti IM, Gouveia AF, Doñate-Buendía C, Mínguez-Vega G, Andrés J, Longo E. Femtosecond-laser-irradiation-induced structural organization and crystallinity of Bi 2WO 6. Sci Rep 2020; 10:4613. [PMID: 32165706 PMCID: PMC7067817 DOI: 10.1038/s41598-020-61524-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 02/25/2020] [Indexed: 12/20/2022] Open
Abstract
Controlling the structural organization and crystallinity of functional oxides is key to enhancing their performance in technological applications. In this work, we report a strong enhancement of the structural organization and crystallinity of Bi2WO6 samples synthetized by a microwave-assisted hydrothermal method after exposing them to femtosecond laser irradiation. X-ray diffraction, UV-vis and Raman spectroscopies, photoluminescence emissions, energy dispersive spectroscopy, field emission scanning electron microscopy, and transmission electron microscopy were employed to characterize the as-synthetized samples. To complement and rationalize the experimental results, first-principles calculations were employed to study the effects of femtosecond laser irradiation. Structural and electronic effects induced by femtosecond laser irradiation enhance the long-range crystallinity while decreasing the free carrier density, as it takes place in the amorphous and liquid states. These effects can be considered a clear cut case of surface-enhanced Raman scattering.
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Affiliation(s)
- Ivo M Pinatti
- CDMF, LIEC, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos, 13565-905, Brazil
| | - Amanda F Gouveia
- CDMF, LIEC, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos, 13565-905, Brazil
| | - C Doñate-Buendía
- GROC, Universitat Jaume I (UJI), Institut de Noves Tecnologies de la Imatge (INIT), Castelló, 12071, Spain
| | - Gladys Mínguez-Vega
- GROC, Universitat Jaume I (UJI), Institut de Noves Tecnologies de la Imatge (INIT), Castelló, 12071, Spain
| | - Juan Andrés
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), Castelló, 12071, Spain
| | - Elson Longo
- CDMF, LIEC, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos, 13565-905, Brazil.
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16
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Kumar S, Alka, Tarun, Saxena J, Bansal C, Kumari P. Visible light-assisted photodegradation by silver tungstate-modified magnetite nanocomposite material for enhanced mineralization of organic water contaminants. APPLIED NANOSCIENCE 2019. [DOI: 10.1007/s13204-019-01230-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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One-pot synthesis of Mn3O4-coupled Ag2WO4 nanocomposite photocatalyst for enhanced photooxidative desulfurization of thiophene under visible light irradiation. APPLIED NANOSCIENCE 2019. [DOI: 10.1007/s13204-019-01212-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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18
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Sun YK, Xu WW, Okamoto T, Haraguchi M, Wang L. Femtosecond laser self-assembly for silver vanadium oxide flower structures. OPTICS LETTERS 2019; 44:5354-5357. [PMID: 31675006 DOI: 10.1364/ol.44.005354] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 10/13/2019] [Indexed: 06/10/2023]
Abstract
Flower-like silver vanadium oxide (SVO) micropatterns were realized by femtosecond laser in situ writing from its precursor. Self-assembled petals irradiated by a femtosecond laser were observed standing on the substrate along the scanned routine assisted by the formation of silver seeds and plasmonic-mediated effects. By controlling the concentration of ammonium monovanadate and the laser exposure time, a different thickness of petals was manipulated from ∼100 nm to micrometers. The SVO products were confirmed Ag4V2O7, AgVO3, and part of Ag3VO4 by x-ray diffraction (XRD) measurement. Photon-driven self-assembly for in situ fabrication of microstructures looks to be an effective and facile technique for SVO and other functional compounds.
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19
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Nobre FX, Bastos IS, Dos Santos Fontenelle RO, Júnior EAA, Takeno ML, Manzato L, de Matos JME, Orlandi PP, de Fátima Souza Mendes J, Brito WR, da Costa Couceiro PR. Antimicrobial properties of α-Ag 2WO 4 rod-like microcrystals synthesized by sonochemistry and sonochemistry followed by hydrothermal conventional method. ULTRASONICS SONOCHEMISTRY 2019; 58:104620. [PMID: 31450327 DOI: 10.1016/j.ultsonch.2019.104620] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 05/24/2019] [Accepted: 05/28/2019] [Indexed: 05/29/2023]
Abstract
In this study we report the synthesis of silver tungstate microcrystals (α-Ag2WO4) by sonochemistry method (SC) at 65 °C and sonochemistry followed by conventional hydrothermal (SC + HC) for 1, 6 and 12 h, at 140 °C. The structural characterization by XRD confirms the alpha phase of the orthorhombic structure and the space group Pn2n, for all synthesized microcrystals. All the actives modes identified at the Raman spectroscopy were characteristic of alpha phase. The optical band gap by UV-Vis spectroscopy using the diffuse reflectance were 2.98, 3.0, 2.99 and 2.96 eV, for the microcrystals SC, SC + HC-1 h, SC + HC-6 h and SC + HC-12 h, respectively. FE-SEM images show the rod-like microcrystals, however, exhibiting the plane surface (1 0 1) only for the synthesized microcrystals with the assistance of the hydrothermal method (SC + HC-1 h, SC + HC- 6 h and SC + HC-12 h). The antimicrobial potential was confirmed for all α-Ag2WO4 microcrystals synthesized. However, the SC + HC-12 h microcrystals were more susceptible in the bacterial and fungal inhibition, with MIC values for microorganisms C. albicans, T. rubrum, MRSA e EHEC, 0.2-0.5, 4-9, 250 and 31.25 μg mL-1, respectively.
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Affiliation(s)
| | | | | | - Edgar Alves Araújo Júnior
- Laboratório Interdisciplinar de Materiais Avançados, Universidade Federal do Piauí, Teresina 64049-550, Amazonas, Brazil
| | - Mitsuo Lopes Takeno
- Instituto Federal do Amazonas, Campus Manaus Distrito Industrial, 69075-000 Amazonas, Brazil
| | - Lizandro Manzato
- Instituto Federal do Amazonas, Campus Manaus Distrito Industrial, 69075-000 Amazonas, Brazil
| | - José Milton Elias de Matos
- Laboratório Interdisciplinar de Materiais Avançados, Universidade Federal do Piauí, Teresina 64049-550, Amazonas, Brazil
| | | | | | - Walter Ricardo Brito
- Laboratório de Fisico-Química, Universidade Federal do Amazonas, Manaus 69077-000, Amazonas, Brazil
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20
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Ag Nanoparticles/α-Ag 2WO 4 Composite Formed by Electron Beam and Femtosecond Irradiation as Potent Antifungal and Antitumor Agents. Sci Rep 2019; 9:9927. [PMID: 31289314 PMCID: PMC6616383 DOI: 10.1038/s41598-019-46159-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 06/20/2019] [Indexed: 12/13/2022] Open
Abstract
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 activity requires novel, effective treatments to be diligently sought. In this work, the synthesis, characterization, and in vitro biological screening of pure α-Ag2WO4, irradiated with electrons and with non-focused and focused femtosecond laser beams are reported. We demonstrate, for the first time, that Ag nanoparticles/α-Ag2WO4 composite displays potent antifungal and antitumor activity. This composite had an extreme low inhibition concentration against Candida albicans, cause the modulation of α-Ag2WO4 perform the fungicidal activity more efficient. For tumor activity, it was found that the composite showed a high selectivity against the cancer cells (MB49), thus depleting the populations of cancer cells by necrosis and apoptosis, without the healthy cells (BALB/3T3) being affected.
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21
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Macedo NG, Machado TR, Roca RA, Assis M, Foggi CC, Puerto-Belda V, Mínguez-Vega G, Rodrigues A, San-Miguel MA, Cordoncillo E, Beltrán-Mir H, Andrés J, Longo E. Tailoring the Bactericidal Activity of Ag Nanoparticles/α-Ag2WO4 Composite Induced by Electron Beam and Femtosecond Laser Irradiation: Integration of Experiment and Computational Modeling. ACS APPLIED BIO MATERIALS 2019; 2:824-837. [DOI: 10.1021/acsabm.8b00673] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nadia G. Macedo
- CDMF, LIEC, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos, São Paulo13565-905, Brazil
| | - Thales R. Machado
- CDMF, LIEC, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos, São Paulo13565-905, Brazil
| | - Roman A. Roca
- CDMF, LIEC, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos, São Paulo13565-905, Brazil
| | - Marcelo Assis
- CDMF, LIEC, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos, São Paulo13565-905, Brazil
| | - Camila Cristina Foggi
- CDMF, LIEC, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos, São Paulo13565-905, Brazil
| | | | | | - André Rodrigues
- Department of Physical Chemistry, Institute of Chemistry, State University of Campinas, Campinas, São Paulo 13083-970, Brazil
| | - Miguel A. San-Miguel
- Department of Physical Chemistry, Institute of Chemistry, State University of Campinas, Campinas, São Paulo 13083-970, Brazil
| | | | | | | | - Elson Longo
- CDMF, LIEC, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos, São Paulo13565-905, Brazil
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22
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P. S. L, G. S. S, R. A. R, M. A, R. TM, H. BM, G. MV, E. C, J. A, E. L. Laser and electron beam-induced formation of Ag/Cr structures on Ag2CrO4. Phys Chem Chem Phys 2019; 21:6101-6111. [DOI: 10.1039/c8cp07263a] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The interactions of silver chromate with a femtosecond laser and electron beam irradiations were investigated.
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Affiliation(s)
- Lemos P. S.
- INCTMN-CDMF, Universidade Federal de São Carlos
- 13565-905 São Carlos
- Brazil
| | - Silva G. S.
- INCTMN-CDMF, Universidade Federal de São Carlos
- 13565-905 São Carlos
- Brazil
| | - Roca R. A.
- INCTMN-CDMF, Universidade Federal de São Carlos
- 13565-905 São Carlos
- Brazil
| | - Assis M.
- INCTMN-CDMF, Universidade Federal de São Carlos
- 13565-905 São Carlos
- Brazil
| | - Torres-Mendieta R.
- Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec
- 461 17 Liberec
- Czech Republic
| | - Beltrán-Mir H.
- Department of Inorganic and Organic Chemistry, University Jaume I (UJI)
- Castelló 12071
- Spain
| | - Mínguez-Vega G.
- GROC UJI, Institut de Noves Tecnologies de la Imatge (INIT), University Jaume I (UJI)
- Castelló 12071
- Spain
| | - Cordoncillo E.
- Department of Inorganic and Organic Chemistry, University Jaume I (UJI)
- Castelló 12071
- Spain
| | - Andrés J.
- Department of Analytical and Physical Chemistry, University Jaume I (UJI)
- Castelló 12071
- Spain
| | - Longo E.
- INCTMN-UNESP, Universidade Estadual Paulista
- 14801-907 Araraquara
- Brazil
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23
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Machado T, Macedo NG, Assis M, Doñate-Buendia C, Mínguez-Vega G, Teixeira MM, Foggi CC, Vergani CE, Beltrán-Mir H, Andrés J, Cordoncillo E, Longo E. From Complex Inorganic Oxides to Ag-Bi Nanoalloy: Synthesis by Femtosecond Laser Irradiation. ACS OMEGA 2018; 3:9880-9887. [PMID: 31459116 PMCID: PMC6644639 DOI: 10.1021/acsomega.8b01264] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 08/13/2018] [Indexed: 05/17/2023]
Abstract
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 synthesis of Ag-Bi nanoalloys by femtosecond laser irradiation of an inorganic oxide Ag2WO4/NaBiO3 target without any chemicals like reducing agents or solvent is presented. The interaction between these materials and the ultrashort pulse of light allows the migration of Ag and Bi atoms from the crystal lattice to the particles surfaces and then to the plasma plume, where the reduction of the positively charged Ag and Bi species in their respective metallic species takes place. Subsequently, the controlled nucleation and growth of the Ag-Bi alloyed nanoparticles occurs in situ during the irradiation process in air. Although at the bulk level, these elements are highly immiscible, it was experimentally demonstrated that at nanoscale, the Ag-Bi nanoalloy can assume a randomly mixed structure with up to 6 ± 1 atom % of Bi solubilized into the face-centered cubic structure of Ag. Furthermore, the Ag-Bi binary system possesses high antibacterial activity against Staphylococcus aureus (methicillin-resistant and methicilin-susceptible), which is interesting for potential antimicrobial applications, consequently increasing their range of applicability. The present results provide potential insights into the structures formed by the Ag-Bi systems at the nanoscale and reveal a new processing method where complex inorganic oxides can be used as precursors for the controlled synthesis of alloyed bimetallic nanoparticles.
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Affiliation(s)
- Thales
R. Machado
- Departamento
de Química, CDMF, Universidade Federal
de São Carlos (UFSCar), São Carlos 13565-905, São Paulo, Brazil
| | - Nadia G. Macedo
- Departamento
de Química, CDMF, Universidade Federal
de São Carlos (UFSCar), São Carlos 13565-905, São Paulo, Brazil
| | - Marcelo Assis
- Departamento
de Química, CDMF, Universidade Federal
de São Carlos (UFSCar), São Carlos 13565-905, São Paulo, Brazil
| | - Carlos Doñate-Buendia
- Institut de Noves Tecnologies de la Imatge (INIT),
GROC, Departament
de Química
Inorgànica i Orgànica, and Departament de Química Física
i Analítica, Universitat Jaume I
(UJI), Castellón de la Plana 12071, Castelló, Spain
| | - Gladys Mínguez-Vega
- Institut de Noves Tecnologies de la Imatge (INIT),
GROC, Departament
de Química
Inorgànica i Orgànica, and Departament de Química Física
i Analítica, Universitat Jaume I
(UJI), Castellón de la Plana 12071, Castelló, Spain
| | - Mayara M. Teixeira
- Departamento
de Química, CDMF, Universidade Federal
de São Carlos (UFSCar), São Carlos 13565-905, São Paulo, Brazil
| | - Camila C. Foggi
- Departamento
de Química, CDMF, Universidade Federal
de São Carlos (UFSCar), São Carlos 13565-905, São Paulo, Brazil
| | - Carlos E. Vergani
- Faculdade
de Odontologia, Universidade Estadual Paulista
(UNESP), Araraquara 14801-385, São Paulo, Brazil
| | - Héctor Beltrán-Mir
- Institut de Noves Tecnologies de la Imatge (INIT),
GROC, Departament
de Química
Inorgànica i Orgànica, and Departament de Química Física
i Analítica, Universitat Jaume I
(UJI), Castellón de la Plana 12071, Castelló, Spain
| | - Juan Andrés
- Institut de Noves Tecnologies de la Imatge (INIT),
GROC, Departament
de Química
Inorgànica i Orgànica, and Departament de Química Física
i Analítica, Universitat Jaume I
(UJI), Castellón de la Plana 12071, Castelló, Spain
| | - Eloisa Cordoncillo
- Institut de Noves Tecnologies de la Imatge (INIT),
GROC, Departament
de Química
Inorgànica i Orgànica, and Departament de Química Física
i Analítica, Universitat Jaume I
(UJI), Castellón de la Plana 12071, Castelló, Spain
| | - Elson Longo
- Departamento
de Química, CDMF, Universidade Federal
de São Carlos (UFSCar), São Carlos 13565-905, São Paulo, Brazil
- E-mail:
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24
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Barrera N, Guerrero L, Debut A, Santa-Cruz P. Printable nanocomposites of polymers and silver nanoparticles for antibacterial devices produced by DoD technology. PLoS One 2018; 13:e0200918. [PMID: 30024925 PMCID: PMC6053237 DOI: 10.1371/journal.pone.0200918] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 05/30/2018] [Indexed: 12/13/2022] Open
Abstract
Silver nanoparticles (Ag-NPs) are known for their efficient bactericidal activity and are widely used in industry. This study aims to produce printable antibacterial devices by drop-on-demand (DoD) inkjet technology, using Ag-NPs as the active part in complex printable fluids. The synthesis of this active part is described using two methods to obtain monodisperse NPs: chemical and microwave irradiation. The synthesized NPs were characterized by UV-VIS, STEM, TEM, DLS and XRD. Two printable fluids were produced based: one with Ag-NPs and a second one, a polymeric nanocomposite, using silver nanoparticles and polyvinyl butyral (Ag-NPs/PVB). Cellulose acetate was used as a flexible substrate. The ecotoxicity analysis of fluids and substrate was performed with Artemia franciscana nauplii. Optimized electric pulse waveforms for drop formation of the functional fluids were obtained for the piezoelectric-based DoD printing. Activity of printed antibacterial devices was evaluated using the Kirby-Bauer method with Staphylococcus aureus and Escherichia coli. The results show that the printed device with Ag-NP fluids evidenced a bacterial inhibition. An important advantage in using the DoD process is the possibility of printing, layer by layer or side by side, more than one active principle, allowing an interleaved or simultaneous release of silver NP and other molecules of interest as for example with a second functional fluid to ensure effectiveness of Ag activity.
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Affiliation(s)
- Nicole Barrera
- Universidad de las Fuerzas Armadas ESPE, Sangolquí, Ecuador
- Departamento de Química Fundamental, Universidade Federal de Pernambuco - UFPE, Recife, Pernambuco, Brazil
| | - Lizeth Guerrero
- Universidad de las Fuerzas Armadas ESPE, Sangolquí, Ecuador
- Departamento de Química Fundamental, Universidade Federal de Pernambuco - UFPE, Recife, Pernambuco, Brazil
| | - Alexis Debut
- Universidad de las Fuerzas Armadas ESPE, Sangolquí, Ecuador
| | - Petrus Santa-Cruz
- Departamento de Química Fundamental, Universidade Federal de Pernambuco - UFPE, Recife, Pernambuco, Brazil
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25
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Assis M, Cordoncillo E, Torres-Mendieta R, Beltrán-Mir H, Mínguez-Vega G, Gouveia AF, Leite E, Andrés J, Longo E. Laser-induced formation of bismuth nanoparticles. Phys Chem Chem Phys 2018; 20:13693-13696. [DOI: 10.1039/c8cp01225c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
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 demonstrated for the first time.
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Affiliation(s)
- Marcelo Assis
- CDMF-UFSCar-Universidade Federal de São Carlos
- 13565-905 São Carlos
- Brazil
| | - Eloísa Cordoncillo
- Department of Inorganic and Organic Chemistry
- University Jaume I (UJI)
- Castelló 12071
- Spain
| | - Rafael Torres-Mendieta
- Institute for Nanomaterials
- Advanced Technologies and Innovation Technical University of Liberec
- 46117 Liberec
- Czech Republic
| | - Héctor Beltrán-Mir
- Department of Inorganic and Organic Chemistry
- University Jaume I (UJI)
- Castelló 12071
- Spain
| | - Gladys Mínguez-Vega
- GROC UJI
- Institut de Noves Tecnologies de la Imatge (INIT), University Jaume I (UJI)
- Castelló 12071
- Spain
| | | | - Edson Leite
- CDMF-UFSCar-Universidade Federal de São Carlos
- 13565-905 São Carlos
- Brazil
- Brazilian Nanotechnology National Laboratory (LNNano)
- Brazilian Center for Research in Energy and Materials (CNPEM)
| | - Juan Andrés
- Department of Analytical and Physical Chemistry
- University Jaume I (UJI)
- Castelló 12071
- Spain
| | - Elson Longo
- CDMF-UFSCar-Universidade Federal de São Carlos
- 13565-905 São Carlos
- Brazil
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