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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/50092
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dc.creatorSusana Fátima Resendept_BR
dc.creatorRodinei Augustipt_BR
dc.creatorGeraldo Magela de Limapt_BR
dc.creatorRafael Lucas Gouveiapt_BR
dc.creatorBernardo dos Santos Oliveirapt_BR
dc.creatorKlaus Wilhelm Heinrich Krambrockpt_BR
dc.creatorGuilherme Oliveira Siqueirapt_BR
dc.creatorFabrício Vieira de Andradept_BR
dc.date.accessioned2023-02-15T19:33:50Z-
dc.date.available2023-02-15T19:33:50Z-
dc.date.issued2019-
dc.citation.volume7pt_BR
dc.citation.issue3pt_BR
dc.citation.spage1pt_BR
dc.citation.epage7pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.jece.2019.103065pt_BR
dc.identifier.issn22133437pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/50092-
dc.description.resumoNovel copper (Cu0.25Ti0.25Nb0.5O2) and nickel (Ni0.25Ti0.25Nb0.5O2) titanium-niobate materials were synthesized by the solid state method and fully characterized. In view of their band gap energies in the visible region, these materials were tested as catalysts to degrade Indigo Carmine, chosen as a prototype organic molecule. Aqueous solutions of this dye with hydrogen peroxide and the above-mentioned materials were irradiated with visible light. Hydrogen peroxide was employed aiming at reducing the recombination rate of the photogenerated charges and to increase the production of hydroxyl radicals. In these experimental conditions, the Cu(II)-based material (Cu-Nb) showed a superior performance than the Ni(II) analogue (90% versus 20% degradation efficiency after an exposure time of 150 min, respectively). The results seem to indicate that the degradation probably takes place via two distinct heterogeneous processes: photocatalysis and photo-Fenton-like. Finally, the Cu-Nb material has a remarkable potential to be used in the remediation of water bodies contaminated with organic pollutants.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Geraispt_BR
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Geraispt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE FÍSICApt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE QUÍMICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.rightsAcesso Restritopt_BR
dc.subjectCobrept_BR
dc.subjectNíquelpt_BR
dc.subjectFotocatálisept_BR
dc.subject.otherCobrept_BR
dc.subject.otherNíquelpt_BR
dc.subject.otherFotocatálisept_BR
dc.titleVisible-light driven catalytic activity of two novel Cu(II) and Ni(II) titanium niobatespt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S2213343719301885?via%3Dihubpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-9448-9518pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-7562-0285pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-7481-191Xpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-0024-0966pt_BR
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