Aerosol assisted chemical vapour deposition of hydroxyapatite-embedded titanium dioxide composite thin films
Autor(a) principal: | |
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Data de Publicação: | 2017 |
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/10400.14/23138 |
Resumo: | This work describes the first Aerosol Assisted Chemical Vapour Deposition (AACVD) synthesis of photocatalytic titanium dioxide thin films embedded with synthetic hydroxyapatite, [Ca-10(PO4)(OH)(2)], nanoparticles. The hydroxyapatite nanoparticles were prepared using a low temperature continuous hydrothermal flow synthesis method; analysis of the hydroxyapatite powder showed that it was phase pure and that the as-prepared material was made up of nano-needles. The nanoparticles were then embedded into TiO2 coatings using the AACVD technique by suspending them in a solution of the titania precursor (titanium tetra-isopropoxide). Results showed that the hydroxyapatite, although present in very low concentrations in the coatings (not detectable by XRD or Raman spectroscopy), heavily affected their morphology, depending on their concentration in the precursor solution. Tests of the photocatalytic activity of the composite films showed that the inclusion of the hydroxyapatite led to an increase in methylene blue photodegradation (up to 50% higher) and that the materials were photostable. This study shows that TiO2 coatings embedded with hydroxyapatite nanoparticles have potential as highly efficient photocatalysts. |
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Aerosol assisted chemical vapour deposition of hydroxyapatite-embedded titanium dioxide composite thin filmsHydroxyapatiteTitanium dioxideChemical vapour depositionPhotocatalysisThis work describes the first Aerosol Assisted Chemical Vapour Deposition (AACVD) synthesis of photocatalytic titanium dioxide thin films embedded with synthetic hydroxyapatite, [Ca-10(PO4)(OH)(2)], nanoparticles. The hydroxyapatite nanoparticles were prepared using a low temperature continuous hydrothermal flow synthesis method; analysis of the hydroxyapatite powder showed that it was phase pure and that the as-prepared material was made up of nano-needles. The nanoparticles were then embedded into TiO2 coatings using the AACVD technique by suspending them in a solution of the titania precursor (titanium tetra-isopropoxide). Results showed that the hydroxyapatite, although present in very low concentrations in the coatings (not detectable by XRD or Raman spectroscopy), heavily affected their morphology, depending on their concentration in the precursor solution. Tests of the photocatalytic activity of the composite films showed that the inclusion of the hydroxyapatite led to an increase in methylene blue photodegradation (up to 50% higher) and that the materials were photostable. This study shows that TiO2 coatings embedded with hydroxyapatite nanoparticles have potential as highly efficient photocatalysts.Veritati - Repositório Institucional da Universidade Católica PortuguesaPiccirillo, C.Denis, C. J.Pullar, R. C.Binions, R.Parkin, I. P.Darr, J. A.Castro, P. M. L.2017-10-17T09:42:08Z20172017-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.14/23138engPICCIRILLO, C.; DENIS, C.J.; PULLAR, R.C.; BINIONS, R.; PARKIN, I.P.; DARR, J.A.; CASTRO, P. M. L. - Aerosol assisted chemical vapour deposition of hydroxyapatite-embedded titanium dioxide composite thin films. Journal of Photochemistry and Photobiology A: Chemistry. ISSN 1010-6030. Vol. 332 (2017), p 45–531010-603010.1016/j.jphotochem.2016.08.010WOS:000387837300005info: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:RCAAP2023-09-26T01:42:29Zoai:repositorio.ucp.pt:10400.14/23138Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:17:37.844175Repositório 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 |
Aerosol assisted chemical vapour deposition of hydroxyapatite-embedded titanium dioxide composite thin films |
title |
Aerosol assisted chemical vapour deposition of hydroxyapatite-embedded titanium dioxide composite thin films |
spellingShingle |
Aerosol assisted chemical vapour deposition of hydroxyapatite-embedded titanium dioxide composite thin films Piccirillo, C. Hydroxyapatite Titanium dioxide Chemical vapour deposition Photocatalysis |
title_short |
Aerosol assisted chemical vapour deposition of hydroxyapatite-embedded titanium dioxide composite thin films |
title_full |
Aerosol assisted chemical vapour deposition of hydroxyapatite-embedded titanium dioxide composite thin films |
title_fullStr |
Aerosol assisted chemical vapour deposition of hydroxyapatite-embedded titanium dioxide composite thin films |
title_full_unstemmed |
Aerosol assisted chemical vapour deposition of hydroxyapatite-embedded titanium dioxide composite thin films |
title_sort |
Aerosol assisted chemical vapour deposition of hydroxyapatite-embedded titanium dioxide composite thin films |
author |
Piccirillo, C. |
author_facet |
Piccirillo, C. Denis, C. J. Pullar, R. C. Binions, R. Parkin, I. P. Darr, J. A. Castro, P. M. L. |
author_role |
author |
author2 |
Denis, C. J. Pullar, R. C. Binions, R. Parkin, I. P. Darr, J. A. Castro, P. M. L. |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Veritati - Repositório Institucional da Universidade Católica Portuguesa |
dc.contributor.author.fl_str_mv |
Piccirillo, C. Denis, C. J. Pullar, R. C. Binions, R. Parkin, I. P. Darr, J. A. Castro, P. M. L. |
dc.subject.por.fl_str_mv |
Hydroxyapatite Titanium dioxide Chemical vapour deposition Photocatalysis |
topic |
Hydroxyapatite Titanium dioxide Chemical vapour deposition Photocatalysis |
description |
This work describes the first Aerosol Assisted Chemical Vapour Deposition (AACVD) synthesis of photocatalytic titanium dioxide thin films embedded with synthetic hydroxyapatite, [Ca-10(PO4)(OH)(2)], nanoparticles. The hydroxyapatite nanoparticles were prepared using a low temperature continuous hydrothermal flow synthesis method; analysis of the hydroxyapatite powder showed that it was phase pure and that the as-prepared material was made up of nano-needles. The nanoparticles were then embedded into TiO2 coatings using the AACVD technique by suspending them in a solution of the titania precursor (titanium tetra-isopropoxide). Results showed that the hydroxyapatite, although present in very low concentrations in the coatings (not detectable by XRD or Raman spectroscopy), heavily affected their morphology, depending on their concentration in the precursor solution. Tests of the photocatalytic activity of the composite films showed that the inclusion of the hydroxyapatite led to an increase in methylene blue photodegradation (up to 50% higher) and that the materials were photostable. This study shows that TiO2 coatings embedded with hydroxyapatite nanoparticles have potential as highly efficient photocatalysts. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-10-17T09:42:08Z 2017 2017-01-01T00:00:00Z |
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 |
http://hdl.handle.net/10400.14/23138 |
url |
http://hdl.handle.net/10400.14/23138 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
PICCIRILLO, C.; DENIS, C.J.; PULLAR, R.C.; BINIONS, R.; PARKIN, I.P.; DARR, J.A.; CASTRO, P. M. L. - Aerosol assisted chemical vapour deposition of hydroxyapatite-embedded titanium dioxide composite thin films. Journal of Photochemistry and Photobiology A: Chemistry. ISSN 1010-6030. Vol. 332 (2017), p 45–53 1010-6030 10.1016/j.jphotochem.2016.08.010 WOS:000387837300005 |
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 |
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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 |
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1799131863984373760 |