Characterization by Photocurrent Spectroscopy of Anodic Films Formed on Tin-Indium Alloys
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000600004 |
Resumo: | In the present work, a study of the photoelectrochemical characteristics and chemical structure of anodic films formed onto different Sn1-xIn x (0 ≤ x < 0.3) alloys in 0.2 M NaOH is presented. The electrochemical behavior of the alloys was studied by means of cyclic voltammetry. The optical band gaps of the passive films were determined by photocurrent spectroscopy, while its chemical structure was studied by Fourier transform infrared reflection-absorption spectroscopy. The experimental results indicate that the anodic films consist of hydroxylated species of the type In ySn(1-y)(OH)4-y. The films are enriched in In and, for x > 0.25, In(OH)3 is the dominant component of the surface layers. The existing theoretical background was used to estimate the relative concentration of Sn and In in the films from the band gap measurements. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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7160 |
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Characterization by Photocurrent Spectroscopy of Anodic Films Formed on Tin-Indium Alloystin-indium alloyspassive layersphotocurrent spectroscopyinfrared spectroscopyIn the present work, a study of the photoelectrochemical characteristics and chemical structure of anodic films formed onto different Sn1-xIn x (0 ≤ x < 0.3) alloys in 0.2 M NaOH is presented. The electrochemical behavior of the alloys was studied by means of cyclic voltammetry. The optical band gaps of the passive films were determined by photocurrent spectroscopy, while its chemical structure was studied by Fourier transform infrared reflection-absorption spectroscopy. The experimental results indicate that the anodic films consist of hydroxylated species of the type In ySn(1-y)(OH)4-y. The films are enriched in In and, for x > 0.25, In(OH)3 is the dominant component of the surface layers. The existing theoretical background was used to estimate the relative concentration of Sn and In in the films from the band gap measurements.Sociedade Portuguesa de Electroquímica2009-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000600004Portugaliae Electrochimica Acta v.27 n.6 2009reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000600004Moina,CarlosYbarra,Gabrielinfo:eu-repo/semantics/openAccess2024-02-06T17:07:02Zoai:scielo:S0872-19042009000600004Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:20:08.105726Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Characterization by Photocurrent Spectroscopy of Anodic Films Formed on Tin-Indium Alloys |
title |
Characterization by Photocurrent Spectroscopy of Anodic Films Formed on Tin-Indium Alloys |
spellingShingle |
Characterization by Photocurrent Spectroscopy of Anodic Films Formed on Tin-Indium Alloys Moina,Carlos tin-indium alloys passive layers photocurrent spectroscopy infrared spectroscopy |
title_short |
Characterization by Photocurrent Spectroscopy of Anodic Films Formed on Tin-Indium Alloys |
title_full |
Characterization by Photocurrent Spectroscopy of Anodic Films Formed on Tin-Indium Alloys |
title_fullStr |
Characterization by Photocurrent Spectroscopy of Anodic Films Formed on Tin-Indium Alloys |
title_full_unstemmed |
Characterization by Photocurrent Spectroscopy of Anodic Films Formed on Tin-Indium Alloys |
title_sort |
Characterization by Photocurrent Spectroscopy of Anodic Films Formed on Tin-Indium Alloys |
author |
Moina,Carlos |
author_facet |
Moina,Carlos Ybarra,Gabriel |
author_role |
author |
author2 |
Ybarra,Gabriel |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Moina,Carlos Ybarra,Gabriel |
dc.subject.por.fl_str_mv |
tin-indium alloys passive layers photocurrent spectroscopy infrared spectroscopy |
topic |
tin-indium alloys passive layers photocurrent spectroscopy infrared spectroscopy |
description |
In the present work, a study of the photoelectrochemical characteristics and chemical structure of anodic films formed onto different Sn1-xIn x (0 ≤ x < 0.3) alloys in 0.2 M NaOH is presented. The electrochemical behavior of the alloys was studied by means of cyclic voltammetry. The optical band gaps of the passive films were determined by photocurrent spectroscopy, while its chemical structure was studied by Fourier transform infrared reflection-absorption spectroscopy. The experimental results indicate that the anodic films consist of hydroxylated species of the type In ySn(1-y)(OH)4-y. The films are enriched in In and, for x > 0.25, In(OH)3 is the dominant component of the surface layers. The existing theoretical background was used to estimate the relative concentration of Sn and In in the films from the band gap measurements. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-01-01 |
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://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000600004 |
url |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000600004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042009000600004 |
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 |
Sociedade Portuguesa de Electroquímica |
publisher.none.fl_str_mv |
Sociedade Portuguesa de Electroquímica |
dc.source.none.fl_str_mv |
Portugaliae Electrochimica Acta v.27 n.6 2009 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 |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799137290352590848 |