Nanoestruturas de óxido de cobre obtidas por novo método hidrotermal de microondas
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFSCAR |
Texto Completo: | https://repositorio.ufscar.br/handle/ufscar/7708 |
Resumo: | Synthesis and characterization of Copper Oxide nanostructured by means of hydrothermal assisted by microwaves were studied in this work. The thermal treatment device was set up by using a domestic microwave oven and a hydrothermal chamber, specially adapted as a hydrothermal reactor. The obtained nanostructures of CuO have been characterized by X-ray diffraction (XDR) to determine its crystallinity; by field emission scanning electron microscopy (SEM-FEG) and transmission electron microscopy to characterize the morphology and single crystal nature of nanocrystals formed. The mechanism of nanostructure formed and nanostructure morphology of CuO were studied us a function of processing conditions. For this, the influence of microwave processing, the nature of chemical basis and presence/absence of polyethylene glycol (PEG) as template have been considered during the formation of nanostructured CuO. The chemistry reaction for attaining the nanostructure of CuO was studied using stereochemistry concept and computational quantum chemistry. The results had demonstrated that the formation of copper oxide nanostructure depend on the stereochemistry of the template, on the chemical base for hydrothermal treatment and on the use of microwave heating for hydrothermal synthesis. |
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Almeida, Dawy Keyson de AraújoVarela, José Aranahttp://lattes.cnpq.br/1807399214239200http://lattes.cnpq.br/2492888086278572a7239c9e-4282-4135-924f-6a944e8242842016-10-07T13:35:30Z2016-10-07T13:35:30Z2006-12-08ALMEIDA, Dawy Keyson de Araújo. Nanoestruturas de óxido de cobre obtidas por novo método hidrotermal de microondas. 2006. Tese (Doutorado em Química) – Universidade Federal de São Carlos, São Carlos, 2006. Disponível em: https://repositorio.ufscar.br/handle/ufscar/7708.https://repositorio.ufscar.br/handle/ufscar/7708Synthesis and characterization of Copper Oxide nanostructured by means of hydrothermal assisted by microwaves were studied in this work. The thermal treatment device was set up by using a domestic microwave oven and a hydrothermal chamber, specially adapted as a hydrothermal reactor. The obtained nanostructures of CuO have been characterized by X-ray diffraction (XDR) to determine its crystallinity; by field emission scanning electron microscopy (SEM-FEG) and transmission electron microscopy to characterize the morphology and single crystal nature of nanocrystals formed. The mechanism of nanostructure formed and nanostructure morphology of CuO were studied us a function of processing conditions. For this, the influence of microwave processing, the nature of chemical basis and presence/absence of polyethylene glycol (PEG) as template have been considered during the formation of nanostructured CuO. The chemistry reaction for attaining the nanostructure of CuO was studied using stereochemistry concept and computational quantum chemistry. The results had demonstrated that the formation of copper oxide nanostructure depend on the stereochemistry of the template, on the chemical base for hydrothermal treatment and on the use of microwave heating for hydrothermal synthesis.Este trabalho ocupa-se da síntese, caracterização e estudo de nanoestruturas de óxido de cobre obtidas por meio de um processamento hidrotermal de microondas, construído a partir de um forno de microondas doméstico, que foi adaptado especialmente para funcionar como um reator hidrotermal. As nanoestruturas obtidas foram caracterizadas por métodos físicos como Difratometia de Raios-X (DRX), Microscopia Eletrônica de Varredura de Alta Resolução (FEG), e Energia Dispersiva de Raios-X (EDX). Além disto, o mecanismo de formação das nanoestruturas e o respectivo controle sobre a morfologia e pureza das nanoestruturas de CuO foram estudados. No trabalho, foi investigada a influência do processamento por microondas, a presença/ausência do polietileno glicol como modelador, e o papel da base química sobre a morfologia e microestrutura do material formado. A química da reação de obtenção das nanoestruturas foi estudada usando fundamentos estereoquímicos e cálculos mecânico-quânticos. Os resultados demonstraram que a formação das nanoestruturas de óxido de cobre é dependente da estereoquímica do “template” orientador, da base química usada e da natureza e tempo de processamento hidrotermal.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)porUniversidade Federal de São CarlosCâmpus São CarlosPrograma de Pós-Graduação em Química - PPGQUFSCarNanotecnologiaNanoestruturasÓxido de cobreHidrotermal de micro-ondasCIENCIAS EXATAS E DA TERRA::QUIMICANanoestruturas de óxido de cobre obtidas por novo método hidrotermal de microondasinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisOnline600600f3457fc1-660c-4c88-9d33-343c8953dd79info:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFSCARinstname:Universidade Federal de São Carlos (UFSCAR)instacron:UFSCARORIGINALTeseDKAA.pdfTeseDKAA.pdfapplication/pdf3585393https://repositorio.ufscar.br/bitstream/ufscar/7708/1/TeseDKAA.pdfb22efa51109ae420eeb90d8f6271f228MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81957https://repositorio.ufscar.br/bitstream/ufscar/7708/2/license.txtae0398b6f8b235e40ad82cba6c50031dMD52TEXTTeseDKAA.pdf.txtTeseDKAA.pdf.txtExtracted texttext/plain147296https://repositorio.ufscar.br/bitstream/ufscar/7708/3/TeseDKAA.pdf.txt8847180ede5c629ca9d43696d20a4cceMD53THUMBNAILTeseDKAA.pdf.jpgTeseDKAA.pdf.jpgIM Thumbnailimage/jpeg10019https://repositorio.ufscar.br/bitstream/ufscar/7708/4/TeseDKAA.pdf.jpg9424c667c35a10fe46bccc04e8fed0deMD54ufscar/77082023-09-18 18:30:55.015oai:repositorio.ufscar.br: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Repositório InstitucionalPUBhttps://repositorio.ufscar.br/oai/requestopendoar:43222023-09-18T18:30:55Repositório Institucional da UFSCAR - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.por.fl_str_mv |
Nanoestruturas de óxido de cobre obtidas por novo método hidrotermal de microondas |
title |
Nanoestruturas de óxido de cobre obtidas por novo método hidrotermal de microondas |
spellingShingle |
Nanoestruturas de óxido de cobre obtidas por novo método hidrotermal de microondas Almeida, Dawy Keyson de Araújo Nanotecnologia Nanoestruturas Óxido de cobre Hidrotermal de micro-ondas CIENCIAS EXATAS E DA TERRA::QUIMICA |
title_short |
Nanoestruturas de óxido de cobre obtidas por novo método hidrotermal de microondas |
title_full |
Nanoestruturas de óxido de cobre obtidas por novo método hidrotermal de microondas |
title_fullStr |
Nanoestruturas de óxido de cobre obtidas por novo método hidrotermal de microondas |
title_full_unstemmed |
Nanoestruturas de óxido de cobre obtidas por novo método hidrotermal de microondas |
title_sort |
Nanoestruturas de óxido de cobre obtidas por novo método hidrotermal de microondas |
author |
Almeida, Dawy Keyson de Araújo |
author_facet |
Almeida, Dawy Keyson de Araújo |
author_role |
author |
dc.contributor.authorlattes.por.fl_str_mv |
http://lattes.cnpq.br/2492888086278572 |
dc.contributor.author.fl_str_mv |
Almeida, Dawy Keyson de Araújo |
dc.contributor.advisor1.fl_str_mv |
Varela, José Arana |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/1807399214239200 |
dc.contributor.authorID.fl_str_mv |
a7239c9e-4282-4135-924f-6a944e824284 |
contributor_str_mv |
Varela, José Arana |
dc.subject.por.fl_str_mv |
Nanotecnologia Nanoestruturas Óxido de cobre Hidrotermal de micro-ondas |
topic |
Nanotecnologia Nanoestruturas Óxido de cobre Hidrotermal de micro-ondas CIENCIAS EXATAS E DA TERRA::QUIMICA |
dc.subject.cnpq.fl_str_mv |
CIENCIAS EXATAS E DA TERRA::QUIMICA |
description |
Synthesis and characterization of Copper Oxide nanostructured by means of hydrothermal assisted by microwaves were studied in this work. The thermal treatment device was set up by using a domestic microwave oven and a hydrothermal chamber, specially adapted as a hydrothermal reactor. The obtained nanostructures of CuO have been characterized by X-ray diffraction (XDR) to determine its crystallinity; by field emission scanning electron microscopy (SEM-FEG) and transmission electron microscopy to characterize the morphology and single crystal nature of nanocrystals formed. The mechanism of nanostructure formed and nanostructure morphology of CuO were studied us a function of processing conditions. For this, the influence of microwave processing, the nature of chemical basis and presence/absence of polyethylene glycol (PEG) as template have been considered during the formation of nanostructured CuO. The chemistry reaction for attaining the nanostructure of CuO was studied using stereochemistry concept and computational quantum chemistry. The results had demonstrated that the formation of copper oxide nanostructure depend on the stereochemistry of the template, on the chemical base for hydrothermal treatment and on the use of microwave heating for hydrothermal synthesis. |
publishDate |
2006 |
dc.date.issued.fl_str_mv |
2006-12-08 |
dc.date.accessioned.fl_str_mv |
2016-10-07T13:35:30Z |
dc.date.available.fl_str_mv |
2016-10-07T13:35:30Z |
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 |
ALMEIDA, Dawy Keyson de Araújo. Nanoestruturas de óxido de cobre obtidas por novo método hidrotermal de microondas. 2006. Tese (Doutorado em Química) – Universidade Federal de São Carlos, São Carlos, 2006. Disponível em: https://repositorio.ufscar.br/handle/ufscar/7708. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufscar.br/handle/ufscar/7708 |
identifier_str_mv |
ALMEIDA, Dawy Keyson de Araújo. Nanoestruturas de óxido de cobre obtidas por novo método hidrotermal de microondas. 2006. Tese (Doutorado em Química) – Universidade Federal de São Carlos, São Carlos, 2006. Disponível em: https://repositorio.ufscar.br/handle/ufscar/7708. |
url |
https://repositorio.ufscar.br/handle/ufscar/7708 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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600 600 |
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f3457fc1-660c-4c88-9d33-343c8953dd79 |
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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 |
publisher.none.fl_str_mv |
Universidade Federal de São Carlos Câmpus São Carlos |
dc.source.none.fl_str_mv |
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