Far-infrared optical constants of ZnO and ZnO/Ag nanostructures
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/19258 |
Resumo: | We report on the synthesis of ZnO nanoplates and ZnO nanoplate/Ag nanoparticle heterostructures via a simple and cost effective wet chemical precipitation method. The prepared samples were characterized for structural and optical properties by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), UV-VIS reflectance, Raman, and FT-IR spectroscopy. The Kramers-Kronig (K-K) method and classical dispersion theory was applied to calculate the far-infrared optical constants such as, refractive index n(omega), dielectric constant epsilon(omega), transverse optical phonon (TO) and longitudinal (LO) optical phonon modes. We determined various optical constant values n(omega) and epsilon(omega) for ZnO nanostructures in the range of 0 to 9 and 0 to 70, respectively. Whereas, for Ag deposition on ZnO nanostructures, the corresponding n(omega) and epsilon(omega) values were found to be increased in the range of 0 to 30 and 0 to 800, respectively. The TO and LO optical phonon modes of ZnO nanoplate/Ag nanoparticle heterostructures were also found to be higher (416 cm(-1), 620 cm(-1)) when compared with corresponding values obtained for ZnO nanoplates (415 cm(-1), 604 cm(-1)). |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Far-infrared optical constants of ZnO and ZnO/Ag nanostructuresENHANCED RAMAN-SCATTERINGCORE-SHELL NANOCOMPOSITESPHOTOCATALYTIC PROPERTIESSILVER NANOPARTICLESLASER-ABLATIONSEMICONDUCTORNANOCRYSTALSFABRICATIONNANOWIRESNANOTUBESWe report on the synthesis of ZnO nanoplates and ZnO nanoplate/Ag nanoparticle heterostructures via a simple and cost effective wet chemical precipitation method. The prepared samples were characterized for structural and optical properties by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), UV-VIS reflectance, Raman, and FT-IR spectroscopy. The Kramers-Kronig (K-K) method and classical dispersion theory was applied to calculate the far-infrared optical constants such as, refractive index n(omega), dielectric constant epsilon(omega), transverse optical phonon (TO) and longitudinal (LO) optical phonon modes. We determined various optical constant values n(omega) and epsilon(omega) for ZnO nanostructures in the range of 0 to 9 and 0 to 70, respectively. Whereas, for Ag deposition on ZnO nanostructures, the corresponding n(omega) and epsilon(omega) values were found to be increased in the range of 0 to 30 and 0 to 800, respectively. The TO and LO optical phonon modes of ZnO nanoplate/Ag nanoparticle heterostructures were also found to be higher (416 cm(-1), 620 cm(-1)) when compared with corresponding values obtained for ZnO nanoplates (415 cm(-1), 604 cm(-1)).ROYAL SOC CHEMISTRY2017-12-07T19:06:30Z2014-01-01T00:00:00Z2014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/19258eng2046-206910.1039/c4ra01563kZamiri, RezaRebelo, AvitoZamiri, GolrizAdnani, AtenaKuashal, AjayBelsley, Michael ScottFerreira, J. M. F.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-17T03:48:53ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Far-infrared optical constants of ZnO and ZnO/Ag nanostructures |
title |
Far-infrared optical constants of ZnO and ZnO/Ag nanostructures |
spellingShingle |
Far-infrared optical constants of ZnO and ZnO/Ag nanostructures Zamiri, Reza ENHANCED RAMAN-SCATTERING CORE-SHELL NANOCOMPOSITES PHOTOCATALYTIC PROPERTIES SILVER NANOPARTICLES LASER-ABLATION SEMICONDUCTOR NANOCRYSTALS FABRICATION NANOWIRES NANOTUBES |
title_short |
Far-infrared optical constants of ZnO and ZnO/Ag nanostructures |
title_full |
Far-infrared optical constants of ZnO and ZnO/Ag nanostructures |
title_fullStr |
Far-infrared optical constants of ZnO and ZnO/Ag nanostructures |
title_full_unstemmed |
Far-infrared optical constants of ZnO and ZnO/Ag nanostructures |
title_sort |
Far-infrared optical constants of ZnO and ZnO/Ag nanostructures |
author |
Zamiri, Reza |
author_facet |
Zamiri, Reza Rebelo, Avito Zamiri, Golriz Adnani, Atena Kuashal, Ajay Belsley, Michael Scott Ferreira, J. M. F. |
author_role |
author |
author2 |
Rebelo, Avito Zamiri, Golriz Adnani, Atena Kuashal, Ajay Belsley, Michael Scott Ferreira, J. M. F. |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Zamiri, Reza Rebelo, Avito Zamiri, Golriz Adnani, Atena Kuashal, Ajay Belsley, Michael Scott Ferreira, J. M. F. |
dc.subject.por.fl_str_mv |
ENHANCED RAMAN-SCATTERING CORE-SHELL NANOCOMPOSITES PHOTOCATALYTIC PROPERTIES SILVER NANOPARTICLES LASER-ABLATION SEMICONDUCTOR NANOCRYSTALS FABRICATION NANOWIRES NANOTUBES |
topic |
ENHANCED RAMAN-SCATTERING CORE-SHELL NANOCOMPOSITES PHOTOCATALYTIC PROPERTIES SILVER NANOPARTICLES LASER-ABLATION SEMICONDUCTOR NANOCRYSTALS FABRICATION NANOWIRES NANOTUBES |
description |
We report on the synthesis of ZnO nanoplates and ZnO nanoplate/Ag nanoparticle heterostructures via a simple and cost effective wet chemical precipitation method. The prepared samples were characterized for structural and optical properties by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), UV-VIS reflectance, Raman, and FT-IR spectroscopy. The Kramers-Kronig (K-K) method and classical dispersion theory was applied to calculate the far-infrared optical constants such as, refractive index n(omega), dielectric constant epsilon(omega), transverse optical phonon (TO) and longitudinal (LO) optical phonon modes. We determined various optical constant values n(omega) and epsilon(omega) for ZnO nanostructures in the range of 0 to 9 and 0 to 70, respectively. Whereas, for Ag deposition on ZnO nanostructures, the corresponding n(omega) and epsilon(omega) values were found to be increased in the range of 0 to 30 and 0 to 800, respectively. The TO and LO optical phonon modes of ZnO nanoplate/Ag nanoparticle heterostructures were also found to be higher (416 cm(-1), 620 cm(-1)) when compared with corresponding values obtained for ZnO nanoplates (415 cm(-1), 604 cm(-1)). |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-01-01T00:00:00Z 2014 2017-12-07T19:06:30Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10773/19258 |
url |
http://hdl.handle.net/10773/19258 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2046-2069 10.1039/c4ra01563k |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
ROYAL SOC CHEMISTRY |
publisher.none.fl_str_mv |
ROYAL SOC CHEMISTRY |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
|
repository.mail.fl_str_mv |
|
_version_ |
1777303531603099648 |