Sol-Gel TiO2 thin films sensitized with the mulberry pigment cyanidin
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Materials research (São Carlos. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392007000400015 |
Resumo: | TiO2 films have various applications, among them solar cells and photodegradation of pollutants. In this study, we investigated TiO2 films functionalized with the organic dye cyanidin extracted from black mulberry (Morus nigra). The TiO2 was functionalized by the sol-gel method and the film was deposited on glass substrates by dip-coating. Our aim was to investigate the interaction between the semiconductor and the dye, as well as the influence of the velocity and number of deposits on the characteristics of the film. Using ultraviolet-visible spectroscopy, we observed a shift from the maximum absorption band at 545 nm for the dyes ethanol solution to 595 nm for the film, indicating interaction of the cyanidin with the TiO2. The absorption spectra in the infrared region of the functionalized TiO2 particles showed bands characteristic of the oxide and indicated their interaction with the dye. Using profilometry and m-line techniques, we found that the films presented thicknesses in the order of 100 nm. A SEM analysis confirmed the high density of the films. |
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Sol-Gel TiO2 thin films sensitized with the mulberry pigment cyanidinTiO2filmscyanidinsol-gelTiO2 films have various applications, among them solar cells and photodegradation of pollutants. In this study, we investigated TiO2 films functionalized with the organic dye cyanidin extracted from black mulberry (Morus nigra). The TiO2 was functionalized by the sol-gel method and the film was deposited on glass substrates by dip-coating. Our aim was to investigate the interaction between the semiconductor and the dye, as well as the influence of the velocity and number of deposits on the characteristics of the film. Using ultraviolet-visible spectroscopy, we observed a shift from the maximum absorption band at 545 nm for the dyes ethanol solution to 595 nm for the film, indicating interaction of the cyanidin with the TiO2. The absorption spectra in the infrared region of the functionalized TiO2 particles showed bands characteristic of the oxide and indicated their interaction with the dye. Using profilometry and m-line techniques, we found that the films presented thicknesses in the order of 100 nm. A SEM analysis confirmed the high density of the films.ABM, ABC, ABPol2007-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392007000400015Materials Research v.10 n.4 2007reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392007000400015info:eu-repo/semantics/openAccessFaria,Emerson Henrique deMarçal,Alex LemesNassar,Eduardo JoséCiuffi,Katia JorgeCalefi,Paulo Sergioeng2008-02-07T00:00:00Zoai:scielo:S1516-14392007000400015Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2008-02-07T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
Sol-Gel TiO2 thin films sensitized with the mulberry pigment cyanidin |
title |
Sol-Gel TiO2 thin films sensitized with the mulberry pigment cyanidin |
spellingShingle |
Sol-Gel TiO2 thin films sensitized with the mulberry pigment cyanidin Faria,Emerson Henrique de TiO2 films cyanidin sol-gel |
title_short |
Sol-Gel TiO2 thin films sensitized with the mulberry pigment cyanidin |
title_full |
Sol-Gel TiO2 thin films sensitized with the mulberry pigment cyanidin |
title_fullStr |
Sol-Gel TiO2 thin films sensitized with the mulberry pigment cyanidin |
title_full_unstemmed |
Sol-Gel TiO2 thin films sensitized with the mulberry pigment cyanidin |
title_sort |
Sol-Gel TiO2 thin films sensitized with the mulberry pigment cyanidin |
author |
Faria,Emerson Henrique de |
author_facet |
Faria,Emerson Henrique de Marçal,Alex Lemes Nassar,Eduardo José Ciuffi,Katia Jorge Calefi,Paulo Sergio |
author_role |
author |
author2 |
Marçal,Alex Lemes Nassar,Eduardo José Ciuffi,Katia Jorge Calefi,Paulo Sergio |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Faria,Emerson Henrique de Marçal,Alex Lemes Nassar,Eduardo José Ciuffi,Katia Jorge Calefi,Paulo Sergio |
dc.subject.por.fl_str_mv |
TiO2 films cyanidin sol-gel |
topic |
TiO2 films cyanidin sol-gel |
description |
TiO2 films have various applications, among them solar cells and photodegradation of pollutants. In this study, we investigated TiO2 films functionalized with the organic dye cyanidin extracted from black mulberry (Morus nigra). The TiO2 was functionalized by the sol-gel method and the film was deposited on glass substrates by dip-coating. Our aim was to investigate the interaction between the semiconductor and the dye, as well as the influence of the velocity and number of deposits on the characteristics of the film. Using ultraviolet-visible spectroscopy, we observed a shift from the maximum absorption band at 545 nm for the dyes ethanol solution to 595 nm for the film, indicating interaction of the cyanidin with the TiO2. The absorption spectra in the infrared region of the functionalized TiO2 particles showed bands characteristic of the oxide and indicated their interaction with the dye. Using profilometry and m-line techniques, we found that the films presented thicknesses in the order of 100 nm. A SEM analysis confirmed the high density of the films. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-12-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392007000400015 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392007000400015 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-14392007000400015 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
ABM, ABC, ABPol |
publisher.none.fl_str_mv |
ABM, ABC, ABPol |
dc.source.none.fl_str_mv |
Materials Research v.10 n.4 2007 reponame:Materials research (São Carlos. Online) instname:Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
instname_str |
Universidade Federal de São Carlos (UFSCAR) |
instacron_str |
ABM ABC ABPOL |
institution |
ABM ABC ABPOL |
reponame_str |
Materials research (São Carlos. Online) |
collection |
Materials research (São Carlos. Online) |
repository.name.fl_str_mv |
Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR) |
repository.mail.fl_str_mv |
dedz@power.ufscar.br |
_version_ |
1754212658847940608 |