Estudo das propriedades estruturais, ópticas e fotoluminescentes do Sistema α-(Ag2-3x-yTRxLiy)WO4 (TR = Pr, Sm, Eu, Tb, Dy e Tm)
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFSCAR |
Texto Completo: | https://repositorio.ufscar.br/handle/ufscar/10660 |
Resumo: | Luminescent materials of different colors emission are of great interest for development of new or more efficient optical devices. Although many materials have been reported using different approaches, green synthesis and nanosized phosphors of high color rendering is still very limited. Tungstate matrix can be considered as ideal host lattice for dopants as they possess high thermal, chemical and physical stability. In addition, silver compounds can be an excellent material for biomedical application due to its low toxicity and bacteriostatic properties, which in turn can be used in the health area. This thesis aims to investigate the structural, optical and photoluminescent properties of the system α-(Ag2-3x-yRExLiy)WO4 (RE = Pr, Sm, Eu, Tb, Dy e Tm) prepared by the coprecipitation methodology. This experimental procedure was fast, simple, and efficient to prepare these inorganic materials. The samples were investigated by X-ray diffraction with Rietveld refinement analysis, Raman and Ultraviolet-visible spectroscopy, and Photoluminescence measurements. The morphology was analyzed by Field-Emission Scanning Electron Microscopy and Transmission Electron Microscopy. X-ray Photoelectron Spectroscopy was performed to verify the superficial composition and details. The phase of the nanocrystals was confirmed and the structural and optical properties were dependent of the Rare Earth and Lithium ions. The nanomaterials presented excellent photoluminescent behavior due to the combined matrix and Rare Earth luminescence as well as temperature and co-doping dependence. The nanorod morphology reinforces the preferred alignment, dense packing and directional emission characteristics. Inspired by the above considerations, these new materials may present new applications and superior characteristics for luminescent compounds as well as for biological purpose. |
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Pinatti, Ivo MateusRosa, Ieda Lúcia Viana Rosahttp://lattes.cnpq.br/8086262254116449Longo, Elsonhttp://lattes.cnpq.br/9848311210578810http://lattes.cnpq.br/83385302794753922018-11-12T21:06:10Z2018-11-12T21:06:10Z2018-08-17PINATTI, Ivo Mateus. Estudo das propriedades estruturais, ópticas e fotoluminescentes do Sistema α-(Ag2-3x-yTRxLiy)WO4 (TR = Pr, Sm, Eu, Tb, Dy e Tm). 2018. Tese (Doutorado em Química) – Universidade Federal de São Carlos, São Carlos, 2018. Disponível em: https://repositorio.ufscar.br/handle/ufscar/10660.https://repositorio.ufscar.br/handle/ufscar/10660Luminescent materials of different colors emission are of great interest for development of new or more efficient optical devices. Although many materials have been reported using different approaches, green synthesis and nanosized phosphors of high color rendering is still very limited. Tungstate matrix can be considered as ideal host lattice for dopants as they possess high thermal, chemical and physical stability. In addition, silver compounds can be an excellent material for biomedical application due to its low toxicity and bacteriostatic properties, which in turn can be used in the health area. This thesis aims to investigate the structural, optical and photoluminescent properties of the system α-(Ag2-3x-yRExLiy)WO4 (RE = Pr, Sm, Eu, Tb, Dy e Tm) prepared by the coprecipitation methodology. This experimental procedure was fast, simple, and efficient to prepare these inorganic materials. The samples were investigated by X-ray diffraction with Rietveld refinement analysis, Raman and Ultraviolet-visible spectroscopy, and Photoluminescence measurements. The morphology was analyzed by Field-Emission Scanning Electron Microscopy and Transmission Electron Microscopy. X-ray Photoelectron Spectroscopy was performed to verify the superficial composition and details. The phase of the nanocrystals was confirmed and the structural and optical properties were dependent of the Rare Earth and Lithium ions. The nanomaterials presented excellent photoluminescent behavior due to the combined matrix and Rare Earth luminescence as well as temperature and co-doping dependence. The nanorod morphology reinforces the preferred alignment, dense packing and directional emission characteristics. Inspired by the above considerations, these new materials may present new applications and superior characteristics for luminescent compounds as well as for biological purpose.Materiais luminescentes com diferentes cores de emissão são de grande interesse para o desenvolvimento de novos dispositivos ópticos mais eficientes. Embora muitos materiais tenham sido relatados usando vários artifícios, a síntese ecologicamente correta de fósforos nanométricos e com alta performance de cor ainda são muito limitados. A matriz de tungstato é considerada uma rede hospedeira ideal para dopantes, pois possui alta estabilidade térmica, química e física. Além disso, os compostos de prata podem ser um material excelente para aplicação biomédica devido à sua baixa toxicidade e propriedades bacteriostáticas, que por sua vez podem ser utilizados na área da saúde. Esta tese tem como objetivo investigar as propriedades estruturais, ópticas e fotoluminescentes do sistema α-(Ag2-3x-yTRxLiy)WO4 (TR = Pr, Sm, Eu, Tb, Dy e Tm) preparado pelo método de coprecipitação. Este procedimento experimental foi rápido, simples e eficiente para preparar esses materiais inorgânicos. As amostras foram investigadas por difração de raios X com análise de refinamento Rietveld, espectroscopias Raman e Ultravioleta-visível, e medidas de fotoluminescência. A morfologia foi analisada por Microscopia Eletrônica de Varredura e de Transmissão. A Espectroscopia fotoeletrônica de raios X foi realizada para verificar a composição e detalhes superficiais. A fase dos nanocristais foi confirmada e as propriedades estruturais e ópticas mostraram-se dependentes dos íons terras raras e lítio. Os nanomateriais apresentaram excelente comportamento fotoluminescente devido à luminescência combinada da matriz e da terra rara sendo também dependente da temperatura e da codopagem. A morfologia de nanobastões reforça as características de alinhamento preferencial, empacotamento denso e emissão direcional. Inspirados nas considerações acima, esses novos materiais podem apresentar novas aplicações e características superiores para compostos luminescentes, bem como para fins biológicos.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)FAPESP: 13/23995-8porUniversidade Federal de São CarlosCâmpus São CarlosPrograma de Pós-Graduação em Química - PPGQUFSCarTungstato de PrataEurópioFotoluminescênciaTerras RarasSilver TungstateEuropiumRare EarthPhotoluminescenceCIENCIAS EXATAS E DA TERRA::QUIMICA::QUIMICA INORGANICA::FISICO QUIMICA INORGANICAEstudo das propriedades estruturais, ópticas e fotoluminescentes do Sistema α-(Ag2-3x-yTRxLiy)WO4 (TR = Pr, Sm, Eu, Tb, Dy e Tm)Study of structural, optical and photoluminescent properties of the System α-(Ag2-3x-YRExLiy)Wo4 (RE = Pr, Sm, Eu, Tb, Dy and Tm)info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisOnlineinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFSCARinstname:Universidade Federal de São Carlos (UFSCAR)instacron:UFSCARORIGINALTESE IVO MATEUS PINATTI.pdfTESE IVO MATEUS PINATTI.pdfTESE IMPapplication/pdf9457752https://{{ getenv "DSPACE_HOST" "repositorio.ufscar.br" }}/bitstream/ufscar/10660/1/TESE%20IVO%20MATEUS%20PINATTI.pdfd789a3e412198bc3138e5eb8a2f04944MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81957https://{{ getenv "DSPACE_HOST" "repositorio.ufscar.br" }}/bitstream/ufscar/10660/4/license.txtae0398b6f8b235e40ad82cba6c50031dMD54TEXTTESE IVO MATEUS PINATTI.pdf.txtTESE IVO MATEUS PINATTI.pdf.txtExtracted texttext/plain270714https://{{ getenv "DSPACE_HOST" "repositorio.ufscar.br" }}/bitstream/ufscar/10660/5/TESE%20IVO%20MATEUS%20PINATTI.pdf.txt730d4164ce57868423d38668b7fa9341MD55THUMBNAILTESE IVO MATEUS PINATTI.pdf.jpgTESE IVO MATEUS PINATTI.pdf.jpgIM Thumbnailimage/jpeg10408https://{{ getenv "DSPACE_HOST" "repositorio.ufscar.br" }}/bitstream/ufscar/10660/6/TESE%20IVO%20MATEUS%20PINATTI.pdf.jpg58a99a9c86f4355f31575dd7e2a4aaf5MD56ufscar/106602019-09-11 03:26:10.993oai:repositorio.ufscar.br:ufscar/10660TElDRU7Dh0EgREUgRElTVFJJQlVJw4fDg08gTsODTy1FWENMVVNJVkEKCkNvbSBhIGFwcmVzZW50YcOnw6NvIGRlc3RhIGxpY2Vuw6dhLCB2b2PDqiAobyBhdXRvciAoZXMpIG91IG8gdGl0dWxhciBkb3MgZGlyZWl0b3MgZGUgYXV0b3IpIGNvbmNlZGUgw6AgVW5pdmVyc2lkYWRlCkZlZGVyYWwgZGUgU8OjbyBDYXJsb3MgbyBkaXJlaXRvIG7Do28tZXhjbHVzaXZvIGRlIHJlcHJvZHV6aXIsICB0cmFkdXppciAoY29uZm9ybWUgZGVmaW5pZG8gYWJhaXhvKSwgZS9vdQpkaXN0cmlidWlyIGEgc3VhIHRlc2Ugb3UgZGlzc2VydGHDp8OjbyAoaW5jbHVpbmRvIG8gcmVzdW1vKSBwb3IgdG9kbyBvIG11bmRvIG5vIGZvcm1hdG8gaW1wcmVzc28gZSBlbGV0csO0bmljbyBlCmVtIHF1YWxxdWVyIG1laW8sIGluY2x1aW5kbyBvcyBmb3JtYXRvcyDDoXVkaW8gb3UgdsOtZGVvLgoKVm9jw6ogY29uY29yZGEgcXVlIGEgVUZTQ2FyIHBvZGUsIHNlbSBhbHRlcmFyIG8gY29udGXDumRvLCB0cmFuc3BvciBhIHN1YSB0ZXNlIG91IGRpc3NlcnRhw6fDo28KcGFyYSBxdWFscXVlciBtZWlvIG91IGZvcm1hdG8gcGFyYSBmaW5zIGRlIHByZXNlcnZhw6fDo28uCgpWb2PDqiB0YW1iw6ltIGNvbmNvcmRhIHF1ZSBhIFVGU0NhciBwb2RlIG1hbnRlciBtYWlzIGRlIHVtYSBjw7NwaWEgYSBzdWEgdGVzZSBvdQpkaXNzZXJ0YcOnw6NvIHBhcmEgZmlucyBkZSBzZWd1cmFuw6dhLCBiYWNrLXVwIGUgcHJlc2VydmHDp8Ojby4KClZvY8OqIGRlY2xhcmEgcXVlIGEgc3VhIHRlc2Ugb3UgZGlzc2VydGHDp8OjbyDDqSBvcmlnaW5hbCBlIHF1ZSB2b2PDqiB0ZW0gbyBwb2RlciBkZSBjb25jZWRlciBvcyBkaXJlaXRvcyBjb250aWRvcwpuZXN0YSBsaWNlbsOnYS4gVm9jw6ogdGFtYsOpbSBkZWNsYXJhIHF1ZSBvIGRlcMOzc2l0byBkYSBzdWEgdGVzZSBvdSBkaXNzZXJ0YcOnw6NvIG7Do28sIHF1ZSBzZWphIGRlIHNldQpjb25oZWNpbWVudG8sIGluZnJpbmdlIGRpcmVpdG9zIGF1dG9yYWlzIGRlIG5pbmd1w6ltLgoKQ2FzbyBhIHN1YSB0ZXNlIG91IGRpc3NlcnRhw6fDo28gY29udGVuaGEgbWF0ZXJpYWwgcXVlIHZvY8OqIG7Do28gcG9zc3VpIGEgdGl0dWxhcmlkYWRlIGRvcyBkaXJlaXRvcyBhdXRvcmFpcywgdm9jw6oKZGVjbGFyYSBxdWUgb2J0ZXZlIGEgcGVybWlzc8OjbyBpcnJlc3RyaXRhIGRvIGRldGVudG9yIGRvcyBkaXJlaXRvcyBhdXRvcmFpcyBwYXJhIGNvbmNlZGVyIMOgIFVGU0NhcgpvcyBkaXJlaXRvcyBhcHJlc2VudGFkb3MgbmVzdGEgbGljZW7Dp2EsIGUgcXVlIGVzc2UgbWF0ZXJpYWwgZGUgcHJvcHJpZWRhZGUgZGUgdGVyY2Vpcm9zIGVzdMOhIGNsYXJhbWVudGUKaWRlbnRpZmljYWRvIGUgcmVjb25oZWNpZG8gbm8gdGV4dG8gb3Ugbm8gY29udGXDumRvIGRhIHRlc2Ugb3UgZGlzc2VydGHDp8OjbyBvcmEgZGVwb3NpdGFkYS4KCkNBU08gQSBURVNFIE9VIERJU1NFUlRBw4fDg08gT1JBIERFUE9TSVRBREEgVEVOSEEgU0lETyBSRVNVTFRBRE8gREUgVU0gUEFUUk9Dw41OSU8gT1UKQVBPSU8gREUgVU1BIEFHw4pOQ0lBIERFIEZPTUVOVE8gT1UgT1VUUk8gT1JHQU5JU01PIFFVRSBOw4NPIFNFSkEgQSBVRlNDYXIsClZPQ8OKIERFQ0xBUkEgUVVFIFJFU1BFSVRPVSBUT0RPUyBFIFFVQUlTUVVFUiBESVJFSVRPUyBERSBSRVZJU8ODTyBDT01PClRBTULDiU0gQVMgREVNQUlTIE9CUklHQcOHw5VFUyBFWElHSURBUyBQT1IgQ09OVFJBVE8gT1UgQUNPUkRPLgoKQSBVRlNDYXIgc2UgY29tcHJvbWV0ZSBhIGlkZW50aWZpY2FyIGNsYXJhbWVudGUgbyBzZXUgbm9tZSAocykgb3UgbyhzKSBub21lKHMpIGRvKHMpCmRldGVudG9yKGVzKSBkb3MgZGlyZWl0b3MgYXV0b3JhaXMgZGEgdGVzZSBvdSBkaXNzZXJ0YcOnw6NvLCBlIG7Do28gZmFyw6EgcXVhbHF1ZXIgYWx0ZXJhw6fDo28sIGFsw6ltIGRhcXVlbGFzCmNvbmNlZGlkYXMgcG9yIGVzdGEgbGljZW7Dp2EuCg==Repositório InstitucionalPUBhttps://repositorio.ufscar.br/oai/requestopendoar:43222019-09-11T03:26:10Repositório Institucional da UFSCAR - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.por.fl_str_mv |
Estudo das propriedades estruturais, ópticas e fotoluminescentes do Sistema α-(Ag2-3x-yTRxLiy)WO4 (TR = Pr, Sm, Eu, Tb, Dy e Tm) |
dc.title.alternative.eng.fl_str_mv |
Study of structural, optical and photoluminescent properties of the System α-(Ag2-3x-YRExLiy)Wo4 (RE = Pr, Sm, Eu, Tb, Dy and Tm) |
title |
Estudo das propriedades estruturais, ópticas e fotoluminescentes do Sistema α-(Ag2-3x-yTRxLiy)WO4 (TR = Pr, Sm, Eu, Tb, Dy e Tm) |
spellingShingle |
Estudo das propriedades estruturais, ópticas e fotoluminescentes do Sistema α-(Ag2-3x-yTRxLiy)WO4 (TR = Pr, Sm, Eu, Tb, Dy e Tm) Pinatti, Ivo Mateus Tungstato de Prata Európio Fotoluminescência Terras Raras Silver Tungstate Europium Rare Earth Photoluminescence CIENCIAS EXATAS E DA TERRA::QUIMICA::QUIMICA INORGANICA::FISICO QUIMICA INORGANICA |
title_short |
Estudo das propriedades estruturais, ópticas e fotoluminescentes do Sistema α-(Ag2-3x-yTRxLiy)WO4 (TR = Pr, Sm, Eu, Tb, Dy e Tm) |
title_full |
Estudo das propriedades estruturais, ópticas e fotoluminescentes do Sistema α-(Ag2-3x-yTRxLiy)WO4 (TR = Pr, Sm, Eu, Tb, Dy e Tm) |
title_fullStr |
Estudo das propriedades estruturais, ópticas e fotoluminescentes do Sistema α-(Ag2-3x-yTRxLiy)WO4 (TR = Pr, Sm, Eu, Tb, Dy e Tm) |
title_full_unstemmed |
Estudo das propriedades estruturais, ópticas e fotoluminescentes do Sistema α-(Ag2-3x-yTRxLiy)WO4 (TR = Pr, Sm, Eu, Tb, Dy e Tm) |
title_sort |
Estudo das propriedades estruturais, ópticas e fotoluminescentes do Sistema α-(Ag2-3x-yTRxLiy)WO4 (TR = Pr, Sm, Eu, Tb, Dy e Tm) |
author |
Pinatti, Ivo Mateus |
author_facet |
Pinatti, Ivo Mateus |
author_role |
author |
dc.contributor.authorlattes.por.fl_str_mv |
http://lattes.cnpq.br/8338530279475392 |
dc.contributor.author.fl_str_mv |
Pinatti, Ivo Mateus |
dc.contributor.advisor1.fl_str_mv |
Rosa, Ieda Lúcia Viana Rosa |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/8086262254116449 |
dc.contributor.advisor-co1.fl_str_mv |
Longo, Elson |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/9848311210578810 |
contributor_str_mv |
Rosa, Ieda Lúcia Viana Rosa Longo, Elson |
dc.subject.por.fl_str_mv |
Tungstato de Prata Európio Fotoluminescência Terras Raras |
topic |
Tungstato de Prata Európio Fotoluminescência Terras Raras Silver Tungstate Europium Rare Earth Photoluminescence CIENCIAS EXATAS E DA TERRA::QUIMICA::QUIMICA INORGANICA::FISICO QUIMICA INORGANICA |
dc.subject.eng.fl_str_mv |
Silver Tungstate Europium Rare Earth Photoluminescence |
dc.subject.cnpq.fl_str_mv |
CIENCIAS EXATAS E DA TERRA::QUIMICA::QUIMICA INORGANICA::FISICO QUIMICA INORGANICA |
description |
Luminescent materials of different colors emission are of great interest for development of new or more efficient optical devices. Although many materials have been reported using different approaches, green synthesis and nanosized phosphors of high color rendering is still very limited. Tungstate matrix can be considered as ideal host lattice for dopants as they possess high thermal, chemical and physical stability. In addition, silver compounds can be an excellent material for biomedical application due to its low toxicity and bacteriostatic properties, which in turn can be used in the health area. This thesis aims to investigate the structural, optical and photoluminescent properties of the system α-(Ag2-3x-yRExLiy)WO4 (RE = Pr, Sm, Eu, Tb, Dy e Tm) prepared by the coprecipitation methodology. This experimental procedure was fast, simple, and efficient to prepare these inorganic materials. The samples were investigated by X-ray diffraction with Rietveld refinement analysis, Raman and Ultraviolet-visible spectroscopy, and Photoluminescence measurements. The morphology was analyzed by Field-Emission Scanning Electron Microscopy and Transmission Electron Microscopy. X-ray Photoelectron Spectroscopy was performed to verify the superficial composition and details. The phase of the nanocrystals was confirmed and the structural and optical properties were dependent of the Rare Earth and Lithium ions. The nanomaterials presented excellent photoluminescent behavior due to the combined matrix and Rare Earth luminescence as well as temperature and co-doping dependence. The nanorod morphology reinforces the preferred alignment, dense packing and directional emission characteristics. Inspired by the above considerations, these new materials may present new applications and superior characteristics for luminescent compounds as well as for biological purpose. |
publishDate |
2018 |
dc.date.accessioned.fl_str_mv |
2018-11-12T21:06:10Z |
dc.date.available.fl_str_mv |
2018-11-12T21:06:10Z |
dc.date.issued.fl_str_mv |
2018-08-17 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
PINATTI, Ivo Mateus. Estudo das propriedades estruturais, ópticas e fotoluminescentes do Sistema α-(Ag2-3x-yTRxLiy)WO4 (TR = Pr, Sm, Eu, Tb, Dy e Tm). 2018. Tese (Doutorado em Química) – Universidade Federal de São Carlos, São Carlos, 2018. Disponível em: https://repositorio.ufscar.br/handle/ufscar/10660. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufscar.br/handle/ufscar/10660 |
identifier_str_mv |
PINATTI, Ivo Mateus. Estudo das propriedades estruturais, ópticas e fotoluminescentes do Sistema α-(Ag2-3x-yTRxLiy)WO4 (TR = Pr, Sm, Eu, Tb, Dy e Tm). 2018. Tese (Doutorado em Química) – Universidade Federal de São Carlos, São Carlos, 2018. Disponível em: https://repositorio.ufscar.br/handle/ufscar/10660. |
url |
https://repositorio.ufscar.br/handle/ufscar/10660 |
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por |
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por |
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info:eu-repo/semantics/openAccess |
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openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de São Carlos Câmpus São Carlos |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Química - PPGQ |
dc.publisher.initials.fl_str_mv |
UFSCar |
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Universidade Federal de São Carlos Câmpus São Carlos |
dc.source.none.fl_str_mv |
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