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tranquilin_rl_dr_bauru.pdf: 2522647 bytes, checksum: 91101633b6c46de6af1d6a074003304a (MD5) / A preparação de materiais por novas rotas pode acarretar na descoberta de novas características morfológicas distintas, que podem interagir e mudar as propriedades destes materiais, pois novas rotas químicas de preparação e processamento podem acarretar em uma redução na temperatura e no tempo de processamento, quando comparados com outros métodos. Neste trabalho, o molibdato de chumbo (PbMoO4) foi sintetizado pelo método de hidrotérmico. A estrutura do material foi investigada por difração de rais-X, espectroscopia Raman, espectroscopia de ultravioleta-visível e espectroscopia na região do infravermelho. Suas propriedades fotoluminescentes foram analisadas para as diferentes condições de processamento empregadas. Sua microestrutura foi analisada por intermedio de ensaios de microscopia eletrônica da varredura com canhão de elétrons por emissão de campo e microscopia eletrônica de transmissão e por fim suas propriedades ópticas e fotocatalíticas foram analisadas / The preparation of materials for new routles can lead to the discovery of new distinct morphological characteristics which may interact and change the properties of these materials, because new chemical routes for preaparation and processing may result in a reduction in the temperature and processing time compared other methods. In this work, lead molybdate (PbMoO4) was synthesized by coprecipitation method and processed at different temperature and processing time compared other methods. In this work, lead molydate (PbMoO4) was synthesized by coprecipitation method and processed at different temperatures via the hydrothermal method. The structure of the material was investigated by X-ray diffraction, Raman spectroscopy, ultraviolet-visible spectroscopy and infrared spectroscopy. Their photoluminescent properties were analyzed for diferent processing conditions employed. The micro structural and morphological analyses of these powders were performed using the techniques of field emission gun scanning electronic microscopy and by transmission electronic microscopy, at the end, was evaluated their optical an photocatalysis properties
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.unesp.br:11449/106657 |
| Date | 26 April 2013 |
| Creators | Tranquilin, Ricardo Luis [UNESP] |
| Contributors | Universidade Estadual Paulista (UNESP), Silva, Elson Longo da [UNESP] |
| Publisher | Universidade Estadual Paulista (UNESP) |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Format | 101 f. : il. |
| Source | Aleph, reponame:Repositório Institucional da UNESP, instname:Universidade Estadual Paulista, instacron:UNESP |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | -1, -1 |
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