Iron oxide nanocatalyst with titanium and silver nanoparticles: Synthesis, characterization and photocatalytic activity on the degradation of Rhodamine B dye
| Autor: | Sérgio Roberto Mortari, William Leonardo da Silva, Gabriela Pereira Chuy, Cristiane Pizzutti dos Santos, Bruno Stefanello Vizzotto, Pâmela Cristine Ladwig Muraro, Luis Fernando Wentz Brum |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Pollution remediation Nanoparticle lcsh:Medicine 02 engineering and technology 010501 environmental sciences 01 natural sciences Article Silver nanoparticle Catalysis chemistry.chemical_compound Zeta potential Rhodamine B lcsh:Science 0105 earth and related environmental sciences Multidisciplinary Aqueous solution lcsh:R Environmental health and safety issues 021001 nanoscience & nanotechnology Nanomaterial-based catalyst chemistry Photocatalysis lcsh:Q 0210 nano-technology Nuclear chemistry |
| Zdroj: | Scientific Reports, Vol 10, Iss 1, Pp 1-9 (2020) Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | Nowadays, there is a growing concern about the environmental impacts of colored wastewater. Thus, the present work aims the synthesis, characterization and determination of photocatalytic activity of iron oxide (Fe2O3) nanocatalyst, evaluating the effect of hybridization with titanium (TiNPs-Fe2O3) and silver (AgNPs-Fe2O3) nanoparticles, on the degradation of Rhodamine B dye (RhB). Nanocatalysts were characterized by XRD, SEM, TEM, FTIR, N2 porosimetry (BET/BJH method), zeta potential and DRS. Photocatalytic tests were performed in a slurry reactor, with the nanocatalyst in suspension, using RhB as a target molecule, under ultraviolet (UV) and visible radiation. Therefore, the photocatalytic activity of the nanocatalysts (non-doped and hybridized) was evaluated in these ideal conditions, where the AgNPs-Fe2O3 sample showed the best photocatalytic activity with a degradation of 94.1% (k = 0.0222 min−1, under UV) and 58.36% (k = 0.007 min−1, under visible), while under the same conditions, the TiO2-P25 commercial catalyst showed a degradation of 61.5% (k = 0.0078 min−1) and 44.5% (k = 0.0044 min−1), respectively. According with the ideal conditions determined, reusability of the AgNPs-Fe2O3 nanocatalyst was measured, showing a short reduction (about 8%) of its photocatalytic activity after 5 cycles. Thus, the Fe2O3 nanocatalyst can be considered a promising catalyst in the heterogeneous photocatalysis for application in the degradation of organic dyes in aqueous solution. |
| Databáze: | OpenAIRE |
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