Obtaining Porous Zinc Oxide Ceramics Using Replica Technique: Application in Photocatalysis
| Autor: | Thamara M. O. Ruellas, Carolina Del Roveri, João O.D. Malafatti, Tânia Regina Giraldi, Elaine C. Paris, Sylma Carvalho Maestrelli, Felipe P. Faria |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Ceramic processing Rhodamine B Mechanical Engineering Replica chemistry.chemical_element Zinc Condensed Matter Physics chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials Statistical analyses visual_art Photocatalysis visual_art.visual_art_medium Slurry TA401-492 General Materials Science Ceramic Porosity Advanced Oxidation Processes Materials of engineering and construction. Mechanics of materials |
| Zdroj: | Materials Research, Vol 25 (2021) Materials Research v.25 2022 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL Materials Research, Volume: 25, Article number: e20210083, Published: 01 NOV 2021 |
| ISSN: | 1516-1439 |
| Popis: | This research investigated the production of porous zinc oxide (ZnO) ceramics obtained by the replica method for water depollution by photocatalytic processes. Five photo-decolorization cycles were performed to analyze the reuse potential of the ceramics. Statistical analyses using R programming were conducted to investigate possible significant differences between them. The ceramics porosities were between 46.74 and 62.50% (depending on the composition). The most successful results were achieved in prepared ceramics from slurries containing 65% ZnO and 1% carboxymethylcellulose, in which the dye decolorization results reached 90.5% after 5 cycles, indicating a high reuse potential of these ceramics. Multivariate analysis proved the negative effect of increasing the heat treatment temperature on the evaluated properties. The best processing conditions to obtain porous ZnO ceramics by the replica technique were established through statistical tools, with very satisfactory results in the photo-decolorization potential of the investigated dye. |
| Databáze: | OpenAIRE |
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