| Autor: |
Elson Longo, Maria Gardênia Fonseca, A. S. Maia, Ieda M. G. Santos, Máximo Siu Li, Marcia R. S. Silva, K. F. Moura, Laís Chantelle |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Emerging Research in Science and Engineering Based on Advanced Experimental and Computational Strategies ISBN: 9783030314026 |
| DOI: |
10.1007/978-3-030-31403-3_2 |
| Popis: |
In the present work, the influence of the short-range disorder on the photocatalytic activity of TiO2 nanocrystals obtained by a rapid microwave solvothermal method was evaluated. The synthesis of TiO2 was performed without synthesis additives and with two different capping agents, sodium dodecyl sulfate (SDS) or carboxymethyl cellulose (CMC). Higher short-range disorder was obtained when SDS was used, as indicated by photoluminescence (PL) and also in the Raman spectra. In the second step, TiO2 samples were used as photocatalysts for the degradation of remazol golden-yellow dye (RNL). High efficiency was observed, with meaningful variations in the percentage efficiency depending on the short-range order of the photocatalyst. Our best results were comparable to those of commercial TiO2 Degussa P25. Adsorption isotherms were also evaluated as a function of time, indicating that chemisorption appears to take place, with a high adsorption capacity of the RNL by the photocatalysts. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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