Exploiting the potential of supported magnetic nanomaterials as Fenton-Like catalysts for environmental applications
| Autor: | Carlos Vázquez-Vázquez, Maria Teresa Moreira, Jorge González-Rodríguez, Yolanda Piñeiro, Julio J. Conde, Zulema Vargas-Osorio, María Gamallo, José Rivas, Gumersindo Feijoo |
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| Přispěvatelé: | Universidade de Santiago de Compostela. Departamento de Enxeñaría Química, Universidade de Santiago de Compostela. Departamento de Química Física, Universidade de Santiago de Compostela. Instituto Interdisciplinar de Tecnoloxías Ambientais (CRETUS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Fenton
Materials science General Chemical Engineering kinetic Nanoparticle Reuse Article Nanomaterials Magnetic catalyst estrogen General Materials Science QD1-999 Kinetic Nanocomposite nanoparticle Mesoporous silica Estrogen Nanomaterial-based catalyst reuse Chemistry SBA-15 Chemical engineering magnetic catalyst Magnetic nanoparticles Surface modification Mesoporous material |
| Zdroj: | Nanomaterials Volume 11 Issue 11 Nanomaterials, Vol 11, Iss 2902, p 2902 (2021) Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela instname |
| ISSN: | 2019-1111 |
| Popis: | In recent years, the application of magnetic nanoparticles as alternative catalysts to conventional Fenton processes has been investigated for the removal of emerging pollutants in wastewater. While this type of catalyst reduces the release of iron hydroxides with the treated effluent, it also presents certain disadvantages, such as slower reaction kinetics associated with the availability of iron and mass transfer limitations. To overcome these drawbacks, the functionalization of the nanocatalyst surface through the addition of coatings such as polyacrylic acid (PAA) and their immobilization on a mesoporous silica matrix (SBA15) can be factors that improve the dispersion and stability of the nanoparticles. Under these premises, the performance of the nanoparticle coating and nanoparticle-mesoporous matrix binomials in the degradation of dyes as examples of recalcitrant compounds were evaluated. Based on the outcomes of dye degradation by the different functionalized nanocatalysts and nanocomposites, the nanoparticles embedded in a mesoporous matrix were applied for the removal of estrogens (E1, E2, EE2), accomplishing high removal percentages (above 90%) after the optimization of the operational variables. With the feasibility of their recovery in mind, the nanostructured materials represented a significant advantage as their magnetic character allows their separation for reuse in different successive sequential batch cycles This research was funded by HP-NANOBIO Project (PID2019-111163RB-I00) and MAGDEMON Project (PID2020-112626RB) granted by Spanish Ministry of Science and Innovation SI |
| Databáze: | OpenAIRE |
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