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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/64383
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dc.creatorGuilherme Oliveira Siqueirapt_BR
dc.creatorEduardo C. R. de Moraispt_BR
dc.creatorH. V. da Silvapt_BR
dc.creatorArturo Abelenda Garcíapt_BR
dc.creatorJuan Carlos González Pérezpt_BR
dc.creatorArilza de Oliveira Portopt_BR
dc.date.accessioned2024-02-21T12:43:48Z-
dc.date.available2024-02-21T12:43:48Z-
dc.date.issued2017-
dc.citation.volume105pt_BR
dc.citation.spage45pt_BR
dc.citation.epage53pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.jpcs.2017.01.030pt_BR
dc.identifier.issn0022-3697pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/64383-
dc.description.resumoCubic and hexagonal zinc sulphide nanoparticles were prepared by hydro/solvothermal decomposition of Zinc N,N-diethyldithiocarbamate by using different experimental conditions such as pH values, solvents and the presence of a particle stabilizer, sodium polyacrylate. The effect of these different experimental conditions on the microstructure and photocatalytical efficiency of ZnS was investigated in this work. Microstructural parameters, such as, apparent mean crystal size, microstrain and crystal size distribution were determined by analysis of experimental X-ray diffraction. Apparent mean crystal sizes were in the range of 6.5–44 nm and the lattice microstrain varied from 0.24% to 0%. Dimethylformamide showed to be more suitable than water to form small particles with a very narrow size distribution. The obtained optical band gaps and Urbach energies were in range of 3.32–3.60 eV and 0.09–0.15 eV, respectively. Photoluminescence spectra showed strong visible light emissions (green, blue and white) associated to the electronic levels introduced by the presence of superficial defects. The photocatalytic efficiency of these samples was investigated towards methylene blue degradation and a correlation between this efficiency and the PL intensity was observed. This correlation was associated to the formation of surface active centres at catalyst surfaces and the local potential fluctuations of valence and conduction bands.pt_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.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.relation.ispartofJournal of Physics and Chemistry of Solids-
dc.rightsAcesso Restritopt_BR
dc.subjectNanocrystalline microstructurept_BR
dc.subjectOptical materialspt_BR
dc.subjectCatalysispt_BR
dc.subjectZinc sulphidept_BR
dc.subject.otherMicroestruturapt_BR
dc.subject.otherMateriais óticospt_BR
dc.subject.otherCatálisept_BR
dc.titleThe effect of structural and optical properties on the photocatalytic efficiency of Zinc sulphide nanoparticles obtained by hydro/solvothermal decomposition of Zinc N,N-diethyldithiocarbamatept_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S0022369716309313pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-7481-191Xpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-5125-0796pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-7202-339Xpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-9155-1657pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-8118-6155pt_BR
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