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http://hdl.handle.net/2445/120031
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DC Field | Value | Language |
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dc.contributor.author | Bezerra, Paula C. S. | - |
dc.contributor.author | Cavalcante, Rodrigo P. | - |
dc.contributor.author | Garcia, Aline | - |
dc.contributor.author | Wender, Heberton | - |
dc.contributor.author | Martines, Marco A. U. | - |
dc.contributor.author | Casagrande, Gleison A. | - |
dc.contributor.author | Giménez Farreras, Jaume | - |
dc.contributor.author | Marco Buj, Pilar | - |
dc.contributor.author | Oliveira, Silvio C. de | - |
dc.contributor.author | Machulek Jr., Amílcar | - |
dc.date.accessioned | 2018-02-20T12:13:10Z | - |
dc.date.available | 2018-02-20T12:13:10Z | - |
dc.date.issued | 2017 | - |
dc.identifier.issn | 0103-5053 | - |
dc.identifier.uri | http://hdl.handle.net/2445/120031 | - |
dc.description.abstract | This article reports the synthesis and characterization of pure and N-, B-, and Ag-doped TiO2 and the ability of these oxides to photodegrade methylene blue (MB) under sunlight or UV-ABC radiation. The compounds were synthesized using the sol-gel method and characterized by scanning electron microscopy, X-ray diffraction, diffuse reflectance spectroscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, and X-ray photoelectron spectroscopy. Photocatalytic efficiency was significantly increased by N-doping, resulting in 98% MB decomposition under UV-ABC irradiation for 180 min. Ag- and B-doped TiO2 lowered MB degradation rates to 52 and 73%, respectively, compared with pure TiO2. The same behavior was observed with exposure to UV-Vis, with 88, 65, 60, and 42% MB removal with N-doped, pure, B-doped, and Ag-doped TiO2, respectively. Under visible light alone, N-doped TiO2 exhibited higher photocatalytic efficiency than commercial P25-type TiO2. Photocatalysis with N-doped TiO2 proved to be a promising alternative for MB degradation, given the potential of employing solar energy, thus minimizing operating costs. | - |
dc.format.extent | 15 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Sociedade Brasileira de Química | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.21577/0103-5053.20170040 | - |
dc.relation.ispartof | Journal of the Brazilian Chemical Society, 2017, vol. 28, num. 9, p. 1788-1802 | - |
dc.relation.uri | https://doi.org/10.21577/0103-5053.20170040 | - |
dc.rights | cc-by (c) Sociedade Brasileira de Química, 2017 | - |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es | - |
dc.source | Articles publicats en revistes (Enginyeria Química i Química Analítica) | - |
dc.subject.classification | Catalitzadors | - |
dc.subject.classification | Radiació ultraviolada | - |
dc.subject.other | Catalysts | - |
dc.subject.other | Ultraviolet radiation | - |
dc.title | Synthesis, characterization, and photocatalytic activity of pure and N-, B-, or Ag- Doped TiO2 | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 668755 | - |
dc.date.updated | 2018-02-20T12:13:10Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Enginyeria Química i Química Analítica) |
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File | Description | Size | Format | |
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668755.pdf | 5.86 MB | Adobe PDF | View/Open |
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