Tailoring the Anodic Hafnium Oxide Morphology Using Different Organic Solvent Electrolytes
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/10216/138572 |
Resumo: | Highly ordered anodic hafnium oxide (AHO) nanoporous or nanotubes were synthesized by electrochemical anodization of Hf foils. The growth of self-ordered AHO was investigated by optimizing a key electrochemical anodization parameter, the solvent-based electrolyte using: Ethylene glycol, dimethyl sulfoxide, formamide and N-methylformamide organic solvents. The electrolyte solvent is here shown to highly affect the morphological properties of the AHO, namely the self-ordering, growth rate and length. As a result, AHO nanoporous and nanotubes arrays were obtained, as well as other different shapes and morphologies, such as nanoneedles, nanoflakes and nanowires-agglomerations. The intrinsic chemical-physical properties of the electrolyte solvents (solvent type, dielectric constant and viscosity) are at the base of the properties that mainly affect the AHO morphology shape, growth rate, final thickness and porosity, for the same anodization voltage and time. We found that the interplay between the dielectric and viscosity constants of the solvent electrolyte is able to tailor the anodic oxide growth from continuous-to-nanoporous-to-nanotubes. |
id |
RCAP_010bb238c47cd233020385ed206eeec5 |
---|---|
oai_identifier_str |
oai:repositorio-aberto.up.pt:10216/138572 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Tailoring the Anodic Hafnium Oxide Morphology Using Different Organic Solvent ElectrolytesEngenharia químicaChemical engineeringHighly ordered anodic hafnium oxide (AHO) nanoporous or nanotubes were synthesized by electrochemical anodization of Hf foils. The growth of self-ordered AHO was investigated by optimizing a key electrochemical anodization parameter, the solvent-based electrolyte using: Ethylene glycol, dimethyl sulfoxide, formamide and N-methylformamide organic solvents. The electrolyte solvent is here shown to highly affect the morphological properties of the AHO, namely the self-ordering, growth rate and length. As a result, AHO nanoporous and nanotubes arrays were obtained, as well as other different shapes and morphologies, such as nanoneedles, nanoflakes and nanowires-agglomerations. The intrinsic chemical-physical properties of the electrolyte solvents (solvent type, dielectric constant and viscosity) are at the base of the properties that mainly affect the AHO morphology shape, growth rate, final thickness and porosity, for the same anodization voltage and time. We found that the interplay between the dielectric and viscosity constants of the solvent electrolyte is able to tailor the anodic oxide growth from continuous-to-nanoporous-to-nanotubes.2020-022020-02-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10216/138572eng2079-499110.3390/nano10020382Apolinário, A.Sousa, CTOliveira, G. N.P.Lopes, A.M.L.ventura, j.Andrade, L.Adélio Mendesaraujo, j. p.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:RCAAP2023-11-29T13:26:31Zoai:repositorio-aberto.up.pt:10216/138572Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T23:40:32.777298Repositório 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 |
Tailoring the Anodic Hafnium Oxide Morphology Using Different Organic Solvent Electrolytes |
title |
Tailoring the Anodic Hafnium Oxide Morphology Using Different Organic Solvent Electrolytes |
spellingShingle |
Tailoring the Anodic Hafnium Oxide Morphology Using Different Organic Solvent Electrolytes Apolinário, A. Engenharia química Chemical engineering |
title_short |
Tailoring the Anodic Hafnium Oxide Morphology Using Different Organic Solvent Electrolytes |
title_full |
Tailoring the Anodic Hafnium Oxide Morphology Using Different Organic Solvent Electrolytes |
title_fullStr |
Tailoring the Anodic Hafnium Oxide Morphology Using Different Organic Solvent Electrolytes |
title_full_unstemmed |
Tailoring the Anodic Hafnium Oxide Morphology Using Different Organic Solvent Electrolytes |
title_sort |
Tailoring the Anodic Hafnium Oxide Morphology Using Different Organic Solvent Electrolytes |
author |
Apolinário, A. |
author_facet |
Apolinário, A. Sousa, CT Oliveira, G. N.P. Lopes, A.M.L. ventura, j. Andrade, L. Adélio Mendes araujo, j. p. |
author_role |
author |
author2 |
Sousa, CT Oliveira, G. N.P. Lopes, A.M.L. ventura, j. Andrade, L. Adélio Mendes araujo, j. p. |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Apolinário, A. Sousa, CT Oliveira, G. N.P. Lopes, A.M.L. ventura, j. Andrade, L. Adélio Mendes araujo, j. p. |
dc.subject.por.fl_str_mv |
Engenharia química Chemical engineering |
topic |
Engenharia química Chemical engineering |
description |
Highly ordered anodic hafnium oxide (AHO) nanoporous or nanotubes were synthesized by electrochemical anodization of Hf foils. The growth of self-ordered AHO was investigated by optimizing a key electrochemical anodization parameter, the solvent-based electrolyte using: Ethylene glycol, dimethyl sulfoxide, formamide and N-methylformamide organic solvents. The electrolyte solvent is here shown to highly affect the morphological properties of the AHO, namely the self-ordering, growth rate and length. As a result, AHO nanoporous and nanotubes arrays were obtained, as well as other different shapes and morphologies, such as nanoneedles, nanoflakes and nanowires-agglomerations. The intrinsic chemical-physical properties of the electrolyte solvents (solvent type, dielectric constant and viscosity) are at the base of the properties that mainly affect the AHO morphology shape, growth rate, final thickness and porosity, for the same anodization voltage and time. We found that the interplay between the dielectric and viscosity constants of the solvent electrolyte is able to tailor the anodic oxide growth from continuous-to-nanoporous-to-nanotubes. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-02 2020-02-01T00:00:00Z |
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 |
https://hdl.handle.net/10216/138572 |
url |
https://hdl.handle.net/10216/138572 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2079-4991 10.3390/nano10020382 |
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.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 |
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_ |
1799135720188674048 |