dc.contributorMotta, Fabiana Villela da
dc.contributorDelmonte, Maurício Roberto Bomio
dc.contributorSantiago, Anderson de Azevedo Gomes
dc.creatorDias, Beatriz Pinheiro
dc.date.accessioned2019-11-27T11:22:45Z
dc.date.accessioned2021-09-29T13:22:33Z
dc.date.accessioned2022-10-05T23:01:37Z
dc.date.available2019-11-27T11:22:45Z
dc.date.available2021-09-29T13:22:33Z
dc.date.available2022-10-05T23:01:37Z
dc.date.created2019-11-27T11:22:45Z
dc.date.created2021-09-29T13:22:33Z
dc.date.issued2019-11-22
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dc.identifierhttps://repositorio.ufrn.br/handle/123456789/40355
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3944811
dc.description.abstractNeste trabalho, filmes finos de CeO2 dopados com Eu3+, Tb3+ e Tm3+ nas proporções de 2 e 4 %mol foram obtidos por spin coating e calcinados em 700 °C. Os filmes foram caracterizados pelas técnicas de DRX, FEG, MFA e UV-Vis. As propriedades fotocatalíticas dos filmes finos foram determinadas pela degradação do corante azul de metileno (AM). Os filmes finos foram submetidos a 4 ciclos fotocatalíticos para analisar a capacidade de serem reusados. Os difratogramas mostram que não houve a formação de fases secundárias, onde todos os picos são referentes ao CeO2. As micrografias de FEG indicam que a dopagem com 4 %mol promove a redução da espessura e porosidade superficial dos filmes finos. As imagens de MFA indicam o aumento da rugosidade superficial com a dopagem utilizando terras raras. A dopagem com Eu3+, Tb3+ e Tm3+ aumentam a atividade fotocatalítica em pelo menos 15%, para os filmes dopados com 4 %mol. Os testes de reuso indicam que a atividade fotocatalítica se mantém praticamente constante após a aplicação de quatro ciclos consecutivos.
dc.publisherUniversidade Federal do Rio Grande do Norte
dc.publisherBrasil
dc.publisherUFRN
dc.publisherEngenharia de Materiais
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/3.0/br/
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Brazil
dc.subjectEu3+, Tb3+ and Tm3+ doped CeO2; thin films; spin coating; photocatalytic reuse
dc.subjectCeO2 dopado com Eu3+, Tb3+ e Tm3+; filmes finos; spin coating; reuso fotocatalítico
dc.titleStudy of obtaining thin films of CeO2 doped with 2 and 4 mol% of europium, terbium and thulium obtained by spin-coating: Photocatalytic properties
dc.typebachelorThesis


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