Nitreto de carbono grafítico associado a nanopartículas plasmônicas de prata e cobre

Detalhes bibliográficos
Ano de defesa: 2022
Autor(a) principal: Queiroz, Emanuel Pereira de
Orientador(a): Fechine, Pierre Basílio Almeida
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Não Informado pela instituição
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Nitreto de carbono grafítico
g-C3N4
Materiais semicondutores
Nanopartículas
Link de acesso: http://repositorio.ufc.br/handle/riufc/75051
Resumo: The present work aims to elucidate the structural, optical and photocatalytic properties of gC3N4 and derivated nanocomposites from the addition of Ag and Cu nanoparticles, in different proportions. The g-C3N4 material was synthesized from thermopolimerization of urea. The concentration of the nanoparticles, in mono- or bi-metallic form was 10% w.t. in relation of g-C3N4. The synthesized nanocomposites was g-C3N4/Ag, g-C3N4/Cu, gC3N4/Ag2Cu, g-C3N4/AgCu, g-C3N4/AgCu2. To elucidate the structural characteristics were used the XRD, XPS and FTIR techniques; for the study of the optical properties, were used UV-DRS and Fluorescence; for the study of the morphological properties were used HR-TEM and SEM/EDS. The g-C3N4 presented Eg = 2.8 eV, that was displaced to lower energy regions by the metallic nanoparticle deposition. The microscopy images shows the depostion of the nanoparticles and the formation of g-C3N4 nanosheets, indicating the 2D aspect of your structure. The EDS scanning shows the good distribution of the nanoparticles at the surface of the materials.
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spelling Queiroz, Emanuel Pereira deFechine, Pierre Basílio Almeida2023-11-24T11:49:12Z2023-11-24T11:49:12Z2022QUEIROZ, Emanuel. Nitreto de carbono grafítico associado a nanopartículas plasmônicas de prata e cobre. 2022. 56 f. Dissertação (Mestrado em Química) - Universidade Federal do Ceará, Fortaleza, 2022.http://repositorio.ufc.br/handle/riufc/75051The present work aims to elucidate the structural, optical and photocatalytic properties of gC3N4 and derivated nanocomposites from the addition of Ag and Cu nanoparticles, in different proportions. The g-C3N4 material was synthesized from thermopolimerization of urea. The concentration of the nanoparticles, in mono- or bi-metallic form was 10% w.t. in relation of g-C3N4. The synthesized nanocomposites was g-C3N4/Ag, g-C3N4/Cu, gC3N4/Ag2Cu, g-C3N4/AgCu, g-C3N4/AgCu2. To elucidate the structural characteristics were used the XRD, XPS and FTIR techniques; for the study of the optical properties, were used UV-DRS and Fluorescence; for the study of the morphological properties were used HR-TEM and SEM/EDS. The g-C3N4 presented Eg = 2.8 eV, that was displaced to lower energy regions by the metallic nanoparticle deposition. The microscopy images shows the depostion of the nanoparticles and the formation of g-C3N4 nanosheets, indicating the 2D aspect of your structure. The EDS scanning shows the good distribution of the nanoparticles at the surface of the materials.O presente trabalho tem como objetivo elucidar as propriedades estruturais, ópticas e morfológicas do g-C3N4 e dos nanocompósitos derivados a partir da adição de nanopartículas de Ag e Cu, em diferentes proporções. O material g-C3N4 foi sintetizado a partir da termopolimerização da ureia. A concentração das nanopartículas, seja em sua forma mono- ou bi-metálica, é de 10% em massa em relação ao g-C3N4. Os nanocompósitos sintetizados foram g-C3N4/Ag, g-C3N4/Cu, g-C3N4/Ag2Cu, g-C3N4/AgCu, g-C3N4/AgCu2. Para elucidar as características estruturais dos materiais foram utilizadas as técnicas de DRX, XPS e FTIR. Nas propriedades ópticas foram utilizadas UV-DRS e Fluorescência, enquanto que para o estudo das propriedades morfológicas, foram utilizadas HR-TEM e MEV/EDS. O g-C3N4 apresentou um band-gap de 2.8 eV, que foi deslocado para regiões de mais baixa energia a partir da deposição das nanopartículas metálicas. As imagens de microscopia exibem a deposição das nanopartículas e a formação de nanofolhas de g-C3N4, indicando o aspecto 2D de sua estrutura. O mapeamento EDS mostra a boa distribuição dos metais sobre a superfície dos materiais.Nitreto de carbono grafíticog-C3N4Materiais semicondutoresNanopartículasNitreto de carbono grafítico associado a nanopartículas plasmônicas de prata e cobreGraphitic carbon nitride associated to plasmonic nanoparticles of silver and copperinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessporreponame:Repositório Institucional da Universidade Federal do Ceará (UFC)instname:Universidade Federal do Ceará (UFC)instacron:UFChttp://lattes.cnpq.br/2754636295210381https://orcid.org/0000-0002-7822-2354http://lattes.cnpq.br/11843494637105512023ORIGINAL2022_dis_epqueiroz.pdf2022_dis_epqueiroz.pdfapplication/pdf3602830http://repositorio.ufc.br/bitstream/riufc/75051/3/2022_dis_epqueiroz.pdf2ab375e5cbcf5b24d88b6d34dc65a8d6MD53LICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://repositorio.ufc.br/bitstream/riufc/75051/4/license.txt8a4605be74aa9ea9d79846c1fba20a33MD54riufc/750512023-11-24 08:49:14.013oai:repositorio.ufc.br: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Repositório InstitucionalPUBhttp://www.repositorio.ufc.br/ri-oai/requestbu@ufc.br || repositorio@ufc.bropendoar:2023-11-24T11:49:14Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)false
dc.title.pt_BR.fl_str_mv Nitreto de carbono grafítico associado a nanopartículas plasmônicas de prata e cobre
dc.title.en.pt_BR.fl_str_mv Graphitic carbon nitride associated to plasmonic nanoparticles of silver and copper
title Nitreto de carbono grafítico associado a nanopartículas plasmônicas de prata e cobre
spellingShingle Nitreto de carbono grafítico associado a nanopartículas plasmônicas de prata e cobre
Queiroz, Emanuel Pereira de
Nitreto de carbono grafítico
g-C3N4
Materiais semicondutores
Nanopartículas
title_short Nitreto de carbono grafítico associado a nanopartículas plasmônicas de prata e cobre
title_full Nitreto de carbono grafítico associado a nanopartículas plasmônicas de prata e cobre
title_fullStr Nitreto de carbono grafítico associado a nanopartículas plasmônicas de prata e cobre
title_full_unstemmed Nitreto de carbono grafítico associado a nanopartículas plasmônicas de prata e cobre
title_sort Nitreto de carbono grafítico associado a nanopartículas plasmônicas de prata e cobre
author Queiroz, Emanuel Pereira de
author_facet Queiroz, Emanuel Pereira de
author_role author
dc.contributor.author.fl_str_mv Queiroz, Emanuel Pereira de
dc.contributor.advisor1.fl_str_mv Fechine, Pierre Basílio Almeida
contributor_str_mv Fechine, Pierre Basílio Almeida
dc.subject.por.fl_str_mv Nitreto de carbono grafítico
g-C3N4
Materiais semicondutores
Nanopartículas
topic Nitreto de carbono grafítico
g-C3N4
Materiais semicondutores
Nanopartículas
description The present work aims to elucidate the structural, optical and photocatalytic properties of gC3N4 and derivated nanocomposites from the addition of Ag and Cu nanoparticles, in different proportions. The g-C3N4 material was synthesized from thermopolimerization of urea. The concentration of the nanoparticles, in mono- or bi-metallic form was 10% w.t. in relation of g-C3N4. The synthesized nanocomposites was g-C3N4/Ag, g-C3N4/Cu, gC3N4/Ag2Cu, g-C3N4/AgCu, g-C3N4/AgCu2. To elucidate the structural characteristics were used the XRD, XPS and FTIR techniques; for the study of the optical properties, were used UV-DRS and Fluorescence; for the study of the morphological properties were used HR-TEM and SEM/EDS. The g-C3N4 presented Eg = 2.8 eV, that was displaced to lower energy regions by the metallic nanoparticle deposition. The microscopy images shows the depostion of the nanoparticles and the formation of g-C3N4 nanosheets, indicating the 2D aspect of your structure. The EDS scanning shows the good distribution of the nanoparticles at the surface of the materials.
publishDate 2022
dc.date.issued.fl_str_mv 2022
dc.date.accessioned.fl_str_mv 2023-11-24T11:49:12Z
dc.date.available.fl_str_mv 2023-11-24T11:49:12Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.citation.fl_str_mv QUEIROZ, Emanuel. Nitreto de carbono grafítico associado a nanopartículas plasmônicas de prata e cobre. 2022. 56 f. Dissertação (Mestrado em Química) - Universidade Federal do Ceará, Fortaleza, 2022.
dc.identifier.uri.fl_str_mv http://repositorio.ufc.br/handle/riufc/75051
identifier_str_mv QUEIROZ, Emanuel. Nitreto de carbono grafítico associado a nanopartículas plasmônicas de prata e cobre. 2022. 56 f. Dissertação (Mestrado em Química) - Universidade Federal do Ceará, Fortaleza, 2022.
url http://repositorio.ufc.br/handle/riufc/75051
dc.language.iso.fl_str_mv por
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dc.source.none.fl_str_mv reponame:Repositório Institucional da Universidade Federal do Ceará (UFC)
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instacron:UFC
instname_str Universidade Federal do Ceará (UFC)
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reponame_str Repositório Institucional da Universidade Federal do Ceará (UFC)
collection Repositório Institucional da Universidade Federal do Ceará (UFC)
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