Effect of hydrothermal temperature on the antibacterial and photocatalytic activity of WO3 decorated with silver nanoparticles
| Autor: | Valmor Roberto Mastelaro, T. Belmonte, Elson Longo, J. F. M. Domenegueti, R.A. Capeli, A. J. Chiquito, Silvio Rainho Teixeira, L. G. Trindade, F. M. Pontes, Marcio D. Teodoro, Cleocir José Dalmaschio, J. Caierão |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp), Universidade Federal do Rio Grande do Sul, Universidade Federal do Espírito Santo (UFES), Universidade de São Paulo (USP), Universidade Federal de São Carlos (UFSCar) |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
02 engineering and technology 010402 general chemistry 01 natural sciences Silver nanoparticle Hydrothermal circulation Biomaterials Matrix (chemical analysis) chemistry.chemical_compound WO3 Materials Chemistry Rhodamine B Photocatalysis High-resolution transmission electron microscopy Ag nanoparticles CRESCIMENTO DE CRISTAIS General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Hydrothermal 0104 chemical sciences Electronic Optical and Magnetic Materials Amorphous solid Antibacterial chemistry Ceramics and Composites 0210 nano-technology Antibacterial activity Nuclear chemistry |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| ISSN: | 1573-4846 0928-0707 |
| DOI: | 10.1007/s10971-020-05433-6 |
| Popis: | Made available in DSpace on 2021-06-25T10:16:04Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01 We studied the catalytic and antimicrobial properties of hierarchical architecture of WO3.Ag synthesized at 100, 150, and 200 °C by a very simple and reliable hydrothermal technique. The investigation carried out by XRD showed the amorphous nature of sample grown at 100 °C, while those at 150 and 200 °C crystalline nature of 3D WO3.Ag was confirmed. From FESEM and HRTEM results, it was evident that the silver nanoparticles grew in a 3D WO3.Ag host matrix. The average diameter of Ag nanoparticles by HRTEM was around 5–15 nm. Photocatalytic activities of as-prepared samples were evaluated by the degradation of rhodamine B (RhB). Samples prepared at 150 and 200 °C showed higher activity in comparison to sample prepared at 100 °C. This can be mainly attributed to the suppression of traps states and electron/hole pairs recombination as highlighted by the photoluminescence results. The as-synthetized samples showed promising antimicrobial features against various bacterial strains. The 100 °C WO3.Ag nanospheres exhibited the highest antibacterial activity, with very low minimum inibitory concentration (MIC) values (4.0–8.0 μg/ml) when compared with 150 and 200 °C samples. [Figure not available: see fulltext.] Department of Chemistry Universidade Estadual Paulista—Unesp, P.O. Box 473 Pharmaceutical Science Post-Graduation Program Universidade Federal do Rio Grande do Sul Faculty of Pharmacy Department of Analysis Universidade Federal do Rio Grande do Sul Department of Chemistry Universidade Federal do Espírito Santo—UFES Faculdade de Ciências e Tecnologia—FCT Departament of physics Universidade Estadual Paulista, Rua Roberto Simonsen, 305 Physics Institute of São Carlos (IFSC) University of São Paulo Department of Physics NanO LaB Universidade Federal de São Carlos, Via Washington Luiz, Km 235, P.O. Box 676 Grupo de Nanoestruturas Semicondutoras—Department of Physics Universidade Federal de São Carlos, Via Washington Luiz, Km 235, P.O. Box 676 LIEC—CDMF—Department of Chemistry Universidade Federal de São Carlos, Via Washington Luiz, Km 235, P.O. Box 676 Department of Chemistry Universidade Estadual Paulista—Unesp, P.O. Box 473 Faculdade de Ciências e Tecnologia—FCT Departament of physics Universidade Estadual Paulista, Rua Roberto Simonsen, 305 |
| Databáze: | OpenAIRE |
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