The effect of structural and optical properties on the photocatalytic efficiency of Zinc sulphide nanoparticles obtained by hydro/solvothermal decomposition of Zinc N,N-diethyldithiocarbamate

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dc.creatorGuilherme Oliveira Siqueira
dc.creatorEduardo C. R. de Morais
dc.creatorH. V. da Silva
dc.creatorArturo Abelenda García
dc.creatorJuan Carlos González Pérez
dc.creatorArilza de Oliveira Porto
dc.date.accessioned2024-02-21T12:43:48Z
dc.date.accessioned2025-09-08T23:34:33Z
dc.date.available2024-02-21T12:43:48Z
dc.date.issued2017
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.identifier.doihttps://doi.org/10.1016/j.jpcs.2017.01.030
dc.identifier.issn0022-3697
dc.identifier.urihttps://hdl.handle.net/1843/64383
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Physics and Chemistry of Solids
dc.rightsAcesso Restrito
dc.subjectMicroestrutura
dc.subjectMateriais óticos
dc.subjectCatálise
dc.subject.otherNanocrystalline microstructure
dc.subject.otherOptical materials
dc.subject.otherCatalysis
dc.subject.otherZinc sulphide
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-diethyldithiocarbamate
dc.typeArtigo de periódico
local.citation.epage53
local.citation.spage45
local.citation.volume105
local.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.
local.identifier.orcidhttps://orcid.org/0000-0002-7481-191X
local.identifier.orcidhttps://orcid.org/0000-0001-5125-0796
local.identifier.orcidhttps://orcid.org/0000-0001-7202-339X
local.identifier.orcidhttps://orcid.org/0000-0001-9155-1657
local.identifier.orcidhttps://orcid.org/0000-0002-8118-6155
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0022369716309313

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