Thermally stable SiO2@TiO2core@shell nanoparticles for application in photocatalytic self-cleaning ceramic tiles
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1039/d0ma00785d http://hdl.handle.net/11449/208553 |
Resumo: | Photocatalyst-coated self-cleaning ceramic tiles are in high demand for indoor and outdoor applications aimed at keeping a clean environment. Their industrial processing, however, often requires firing at temperature (1000-1200 °C) much higher than the thermal stability limits of common photocatalysts (<1000 °C) which results a significant loss in self-cleaning activity of the tiles. To address this issue, we have coated commercial ceramic tiles with thermally stable core@shell SiO2@TiO2 particles, which even after single-fire industrial treatment (1000-1140 °C), exhibit excellent self-cleaning activity, much higher than that of control tiles prepared with commercial benchmark P25 TiO2 photocatalyst. Importantly, the photocatalytic activity of SiO2@TiO2 particles, in both powder form and as coatings on ceramic tiles, enhanced with the increase in calcination temperature (to as high as 1000-1140 °C) which is in sharp contrast to the normal photocatalytic behavior of unsupported TiO2. This article explores in details the exceptionally high and industrially relevant thermal stability of silica-supported anatase nanocrystals (5 nm) (SiO2@TiO2) against phase transition and crystallite growth and brings new insight into the effect of core@shell configuration on the thermal stability and photoactivity of SiO2@TiO2 particles. A comprehensive discussion on the relationship between core@shell structure, thermal stability and photoactivity is presented. These SiO2@TiO2 particles with ideal physicochemical characteristics (small phase-pure anatase nanocrystals with higher resistance towards crystallite growth, phase transformation or surface-area loss upon calcination) are ideal photocatalytic materials for efficient photodegradation of organic pollutants for effective environmental remediation and other applications that involve high-temperature processing such as self-cleaning coatings and photocatalytic ceramics. |
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Thermally stable SiO2@TiO2core@shell nanoparticles for application in photocatalytic self-cleaning ceramic tilesPhotocatalyst-coated self-cleaning ceramic tiles are in high demand for indoor and outdoor applications aimed at keeping a clean environment. Their industrial processing, however, often requires firing at temperature (1000-1200 °C) much higher than the thermal stability limits of common photocatalysts (<1000 °C) which results a significant loss in self-cleaning activity of the tiles. To address this issue, we have coated commercial ceramic tiles with thermally stable core@shell SiO2@TiO2 particles, which even after single-fire industrial treatment (1000-1140 °C), exhibit excellent self-cleaning activity, much higher than that of control tiles prepared with commercial benchmark P25 TiO2 photocatalyst. Importantly, the photocatalytic activity of SiO2@TiO2 particles, in both powder form and as coatings on ceramic tiles, enhanced with the increase in calcination temperature (to as high as 1000-1140 °C) which is in sharp contrast to the normal photocatalytic behavior of unsupported TiO2. This article explores in details the exceptionally high and industrially relevant thermal stability of silica-supported anatase nanocrystals (5 nm) (SiO2@TiO2) against phase transition and crystallite growth and brings new insight into the effect of core@shell configuration on the thermal stability and photoactivity of SiO2@TiO2 particles. A comprehensive discussion on the relationship between core@shell structure, thermal stability and photoactivity is presented. These SiO2@TiO2 particles with ideal physicochemical characteristics (small phase-pure anatase nanocrystals with higher resistance towards crystallite growth, phase transformation or surface-area loss upon calcination) are ideal photocatalytic materials for efficient photodegradation of organic pollutants for effective environmental remediation and other applications that involve high-temperature processing such as self-cleaning coatings and photocatalytic ceramics.Institute of Chemistry of São Carlos University of São Paulo (USP)Institute of Chemistry-São Paulo State University (UNESP)Institute of Chemical Sciences University of PeshawarInstitute of Physics Federal University of Mato Grosso Do sul (UFMS), Av. Costa e Silva S/NInstitute of Geosciences and Exact Sciences Department of Physics São Paulo State University (UNESP)Fraunhofer Institute for Manufacturing Technology and Advanced MaterialsInstitute of Chemistry-São Paulo State University (UNESP)Institute of Geosciences and Exact Sciences Department of Physics São Paulo State University (UNESP)Universidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)University of PeshawarUniversidade Federal de Mato Grosso do Sul (UFMS)Fraunhofer Institute for Manufacturing Technology and Advanced MaterialsFerreira-Neto, Elias P. [UNESP]Ullah, Sajjad [UNESP]Martinez, Vitor P.Yabarrena, Jean M. S. CSimões, Mateus B.Perissinotto, Amanda P.Wender, HebertonDe Vicente, Fabio S. [UNESP]Noeske, Paul-Ludwig M.Ribeiro, Sidney J. L. [UNESP]Rodrigues-Filho, Ubirajara P.2021-06-25T11:14:00Z2021-06-25T11:14:00Z2021-03-21info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2085-2096http://dx.doi.org/10.1039/d0ma00785dMaterials Advances, v. 2, n. 6, p. 2085-2096, 2021.2633-5409http://hdl.handle.net/11449/20855310.1039/d0ma00785d2-s2.0-85103491952Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Advancesinfo:eu-repo/semantics/openAccess2021-10-23T19:02:16Zoai:repositorio.unesp.br:11449/208553Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T19:02:16Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Thermally stable SiO2@TiO2core@shell nanoparticles for application in photocatalytic self-cleaning ceramic tiles |
title |
Thermally stable SiO2@TiO2core@shell nanoparticles for application in photocatalytic self-cleaning ceramic tiles |
spellingShingle |
Thermally stable SiO2@TiO2core@shell nanoparticles for application in photocatalytic self-cleaning ceramic tiles Ferreira-Neto, Elias P. [UNESP] |
title_short |
Thermally stable SiO2@TiO2core@shell nanoparticles for application in photocatalytic self-cleaning ceramic tiles |
title_full |
Thermally stable SiO2@TiO2core@shell nanoparticles for application in photocatalytic self-cleaning ceramic tiles |
title_fullStr |
Thermally stable SiO2@TiO2core@shell nanoparticles for application in photocatalytic self-cleaning ceramic tiles |
title_full_unstemmed |
Thermally stable SiO2@TiO2core@shell nanoparticles for application in photocatalytic self-cleaning ceramic tiles |
title_sort |
Thermally stable SiO2@TiO2core@shell nanoparticles for application in photocatalytic self-cleaning ceramic tiles |
author |
Ferreira-Neto, Elias P. [UNESP] |
author_facet |
Ferreira-Neto, Elias P. [UNESP] Ullah, Sajjad [UNESP] Martinez, Vitor P. Yabarrena, Jean M. S. C Simões, Mateus B. Perissinotto, Amanda P. Wender, Heberton De Vicente, Fabio S. [UNESP] Noeske, Paul-Ludwig M. Ribeiro, Sidney J. L. [UNESP] Rodrigues-Filho, Ubirajara P. |
author_role |
author |
author2 |
Ullah, Sajjad [UNESP] Martinez, Vitor P. Yabarrena, Jean M. S. C Simões, Mateus B. Perissinotto, Amanda P. Wender, Heberton De Vicente, Fabio S. [UNESP] Noeske, Paul-Ludwig M. Ribeiro, Sidney J. L. [UNESP] Rodrigues-Filho, Ubirajara P. |
author2_role |
author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (Unesp) University of Peshawar Universidade Federal de Mato Grosso do Sul (UFMS) Fraunhofer Institute for Manufacturing Technology and Advanced Materials |
dc.contributor.author.fl_str_mv |
Ferreira-Neto, Elias P. [UNESP] Ullah, Sajjad [UNESP] Martinez, Vitor P. Yabarrena, Jean M. S. C Simões, Mateus B. Perissinotto, Amanda P. Wender, Heberton De Vicente, Fabio S. [UNESP] Noeske, Paul-Ludwig M. Ribeiro, Sidney J. L. [UNESP] Rodrigues-Filho, Ubirajara P. |
description |
Photocatalyst-coated self-cleaning ceramic tiles are in high demand for indoor and outdoor applications aimed at keeping a clean environment. Their industrial processing, however, often requires firing at temperature (1000-1200 °C) much higher than the thermal stability limits of common photocatalysts (<1000 °C) which results a significant loss in self-cleaning activity of the tiles. To address this issue, we have coated commercial ceramic tiles with thermally stable core@shell SiO2@TiO2 particles, which even after single-fire industrial treatment (1000-1140 °C), exhibit excellent self-cleaning activity, much higher than that of control tiles prepared with commercial benchmark P25 TiO2 photocatalyst. Importantly, the photocatalytic activity of SiO2@TiO2 particles, in both powder form and as coatings on ceramic tiles, enhanced with the increase in calcination temperature (to as high as 1000-1140 °C) which is in sharp contrast to the normal photocatalytic behavior of unsupported TiO2. This article explores in details the exceptionally high and industrially relevant thermal stability of silica-supported anatase nanocrystals (5 nm) (SiO2@TiO2) against phase transition and crystallite growth and brings new insight into the effect of core@shell configuration on the thermal stability and photoactivity of SiO2@TiO2 particles. A comprehensive discussion on the relationship between core@shell structure, thermal stability and photoactivity is presented. These SiO2@TiO2 particles with ideal physicochemical characteristics (small phase-pure anatase nanocrystals with higher resistance towards crystallite growth, phase transformation or surface-area loss upon calcination) are ideal photocatalytic materials for efficient photodegradation of organic pollutants for effective environmental remediation and other applications that involve high-temperature processing such as self-cleaning coatings and photocatalytic ceramics. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T11:14:00Z 2021-06-25T11:14:00Z 2021-03-21 |
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://dx.doi.org/10.1039/d0ma00785d Materials Advances, v. 2, n. 6, p. 2085-2096, 2021. 2633-5409 http://hdl.handle.net/11449/208553 10.1039/d0ma00785d 2-s2.0-85103491952 |
url |
http://dx.doi.org/10.1039/d0ma00785d http://hdl.handle.net/11449/208553 |
identifier_str_mv |
Materials Advances, v. 2, n. 6, p. 2085-2096, 2021. 2633-5409 10.1039/d0ma00785d 2-s2.0-85103491952 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials Advances |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
2085-2096 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1799965044569538560 |