| Autor: |
Talita da Silva Dassoler, Eloise de Sousa Cordeiro, Dachamir Hotza, Agenor De Noni Junior |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Open Ceramics, Vol 13, Iss , Pp 100331- (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2666-5395 |
| DOI: |
10.1016/j.oceram.2023.100331 |
| Popis: |
Titania is an established photocatalytic material. The dispersion of titania nanoparticles on kaolinite particles as carrier and support precursor, TiO2-kao, has been studied to avoid losses in photocatalytic efficiency once fired by single-fired porcelain tile route. The photocatalyst was prepared using the hydrolytic sol-gel route. A commercial titania, P25, was used as a reference TiO2. The samples were fast fired at 800, 1015, 1100, and 1185 °C. Degradation of methylene blue was used to assess the photocatalytic performance. TiO2-kao and P25 applied to unglazed plates fired at 800 °C yielded ∼65% degradation, ∼50% due to photocatalysis, and ∼15% due to photolysis. P25 samples retained ∼10% of their photoactivity after firing at 1185 °C, TiO2-kao retained 80%. TiO2-kao on glazed tiles fired at 1185 °C retained 30% photoactivity. The photocatalytic losses in the glazed sample were due to the reduction in contact area caused by particle encapsulation in the glass layer. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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