An improvement of photocatalytic activity of TiO2 Degussa P25 powder
Autor(a) principal: | |
---|---|
Data de Publicação: | 2015 |
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/10400.1/11443 |
Resumo: | The photocatalytic activities of Degussa P25 powders annealed at various temperatures in vacuum and air were studied together with investigations of their compositions by XPS, of their crystal structures by XRD and of their specific surface areas by BET. It is shown that the photocatalytic activity of P25 powders was remarkably enhanced after vacuum annealing; the kinetic coefficient can be raised by 75% during annealing at 400 degrees C. It is obvious that this enhancement is not related to the adhesion ability of the P25 powders. (C) 2015 Elsevier B.V. All rights reserved. |
id |
RCAP_848ab95ae04faa202a4ecae2e399be7b |
---|---|
oai_identifier_str |
oai:sapientia.ualg.pt:10400.1/11443 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
An improvement of photocatalytic activity of TiO2 Degussa P25 powderTitanium-dioxideThin-filmsComplex precursorsThermal-treatmentAdsorptionAnataseRutileOxygenCalcinationTemperatureThe photocatalytic activities of Degussa P25 powders annealed at various temperatures in vacuum and air were studied together with investigations of their compositions by XPS, of their crystal structures by XRD and of their specific surface areas by BET. It is shown that the photocatalytic activity of P25 powders was remarkably enhanced after vacuum annealing; the kinetic coefficient can be raised by 75% during annealing at 400 degrees C. It is obvious that this enhancement is not related to the adhesion ability of the P25 powders. (C) 2015 Elsevier B.V. All rights reserved.Fundacao para a Ciencia e Tecnologia (FCT) Portugal; FCT [Pest-OE/CTM/LA0024/2013]Elsevier Science BvSapientiaBessergenev, V.Mateus, M. C.Botelho do Rego, A. M.Hantusch, M.Burkel, E.2018-12-07T14:53:18Z2015-072015-07-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/11443eng0926-860X10.1016/j.apcata.2015.05.002info: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:RCAAP2023-07-24T10:23:15Zoai:sapientia.ualg.pt:10400.1/11443Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:02:57.104292Repositório 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 |
An improvement of photocatalytic activity of TiO2 Degussa P25 powder |
title |
An improvement of photocatalytic activity of TiO2 Degussa P25 powder |
spellingShingle |
An improvement of photocatalytic activity of TiO2 Degussa P25 powder Bessergenev, V. Titanium-dioxide Thin-films Complex precursors Thermal-treatment Adsorption Anatase Rutile Oxygen Calcination Temperature |
title_short |
An improvement of photocatalytic activity of TiO2 Degussa P25 powder |
title_full |
An improvement of photocatalytic activity of TiO2 Degussa P25 powder |
title_fullStr |
An improvement of photocatalytic activity of TiO2 Degussa P25 powder |
title_full_unstemmed |
An improvement of photocatalytic activity of TiO2 Degussa P25 powder |
title_sort |
An improvement of photocatalytic activity of TiO2 Degussa P25 powder |
author |
Bessergenev, V. |
author_facet |
Bessergenev, V. Mateus, M. C. Botelho do Rego, A. M. Hantusch, M. Burkel, E. |
author_role |
author |
author2 |
Mateus, M. C. Botelho do Rego, A. M. Hantusch, M. Burkel, E. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Sapientia |
dc.contributor.author.fl_str_mv |
Bessergenev, V. Mateus, M. C. Botelho do Rego, A. M. Hantusch, M. Burkel, E. |
dc.subject.por.fl_str_mv |
Titanium-dioxide Thin-films Complex precursors Thermal-treatment Adsorption Anatase Rutile Oxygen Calcination Temperature |
topic |
Titanium-dioxide Thin-films Complex precursors Thermal-treatment Adsorption Anatase Rutile Oxygen Calcination Temperature |
description |
The photocatalytic activities of Degussa P25 powders annealed at various temperatures in vacuum and air were studied together with investigations of their compositions by XPS, of their crystal structures by XRD and of their specific surface areas by BET. It is shown that the photocatalytic activity of P25 powders was remarkably enhanced after vacuum annealing; the kinetic coefficient can be raised by 75% during annealing at 400 degrees C. It is obvious that this enhancement is not related to the adhesion ability of the P25 powders. (C) 2015 Elsevier B.V. All rights reserved. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-07 2015-07-01T00:00:00Z 2018-12-07T14:53:18Z |
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/10400.1/11443 |
url |
http://hdl.handle.net/10400.1/11443 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0926-860X 10.1016/j.apcata.2015.05.002 |
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 |
Elsevier Science Bv |
publisher.none.fl_str_mv |
Elsevier Science Bv |
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_ |
1799133263505129472 |