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Metadados | Descrição | Idioma |
---|---|---|
Autor(es): dc.contributor | Universidade de São Paulo (USP) | - |
Autor(es): dc.contributor | Universidade Estadual Paulista (Unesp) | - |
Autor(es): dc.contributor | University of Peshawar | - |
Autor(es): dc.contributor | Universidade Federal de Mato Grosso do Sul (UFMS) | - |
Autor(es): dc.contributor | Fraunhofer Institute for Manufacturing Technology and Advanced Materials | - |
Autor(es): dc.creator | Ferreira-Neto, Elias P. [UNESP] | - |
Autor(es): dc.creator | Ullah, Sajjad [UNESP] | - |
Autor(es): dc.creator | Martinez, Vitor P. | - |
Autor(es): dc.creator | Yabarrena, Jean M. S. C | - |
Autor(es): dc.creator | Simões, Mateus B. | - |
Autor(es): dc.creator | Perissinotto, Amanda P. | - |
Autor(es): dc.creator | Wender, Heberton | - |
Autor(es): dc.creator | De Vicente, Fabio S. [UNESP] | - |
Autor(es): dc.creator | Noeske, Paul-Ludwig M. | - |
Autor(es): dc.creator | Ribeiro, Sidney J. L. [UNESP] | - |
Autor(es): dc.creator | Rodrigues-Filho, Ubirajara P. | - |
Data de aceite: dc.date.accessioned | 2022-02-22T00:53:44Z | - |
Data de disponibilização: dc.date.available | 2022-02-22T00:53:44Z | - |
Data de envio: dc.date.issued | 2021-06-25 | - |
Data de envio: dc.date.issued | 2021-06-25 | - |
Data de envio: dc.date.issued | 2021-03-21 | - |
Fonte completa do material: dc.identifier | http://dx.doi.org/10.1039/d0ma00785d | - |
Fonte completa do material: dc.identifier | http://hdl.handle.net/11449/208553 | - |
Fonte: dc.identifier.uri | http://educapes.capes.gov.br/handle/11449/208553 | - |
Descrição: dc.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. | - |
Descrição: dc.description | Institute of Chemistry of São Carlos University of São Paulo (USP) | - |
Descrição: dc.description | Institute of Chemistry-São Paulo State University (UNESP) | - |
Descrição: dc.description | Institute of Chemical Sciences University of Peshawar | - |
Descrição: dc.description | Institute of Physics Federal University of Mato Grosso Do sul (UFMS), Av. Costa e Silva S/N | - |
Descrição: dc.description | Institute of Geosciences and Exact Sciences Department of Physics São Paulo State University (UNESP) | - |
Descrição: dc.description | Fraunhofer Institute for Manufacturing Technology and Advanced Materials | - |
Descrição: dc.description | Institute of Chemistry-São Paulo State University (UNESP) | - |
Descrição: dc.description | Institute of Geosciences and Exact Sciences Department of Physics São Paulo State University (UNESP) | - |
Formato: dc.format | 2085-2096 | - |
Idioma: dc.language | en | - |
Relação: dc.relation | Materials Advances | - |
???dc.source???: dc.source | Scopus | - |
Título: dc.title | Thermally stable SiO2@TiO2core@shell nanoparticles for application in photocatalytic self-cleaning ceramic tiles | - |
Tipo de arquivo: dc.type | livro digital | - |
Aparece nas coleções: | Repositório Institucional - Unesp |
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