Superhydrophobic FeNi3/Al2O3 multifunctional hybrid Janus particles for the catalytic degradation of azo dye, oil/water separation and microplastics removal
Emerging pollutants are causing global health and environmental challenges, necessitating the advancement of methodologies for their efficient removal. In this study, we present the efficacy of superhydrophobic $\mathrm{FeNi_{3}/Al_{2}O_{3}}$ Janus particles in the removal of oils and microplastics...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:dnet:recercat____::f7f6acb065a6ea5143ae94964ed92c22 |
| Acceso en línea: | https://hdl.handle.net/2445/229351 |
| Access Level: | acceso abierto |
| Palabra clave: | Compostos azoics Microplàstics Azo compounds Microplastics |
| Sumario: | Emerging pollutants are causing global health and environmental challenges, necessitating the advancement of methodologies for their efficient removal. In this study, we present the efficacy of superhydrophobic $\mathrm{FeNi_{3}/Al_{2}O_{3}}$ Janus particles in the removal of oils and microplastics from water, combined with the degradation of azo dyes, leveraging their surface properties. Field Emission Scanning Electron Microscopy (FESEM) and Energy Dispersive X-ray Spectroscopy (EDS) revealed the morphology and elemental composition of these particles, which were further complemented by X-ray diffraction (XRD) for phase identification. After surface functionalization of the $\mathrm{FeNi_{3}/Al_{2}O_{3}}$ Janus particles with lauric acid, they exhibited superhydrophobicity (152 ± 1°) and superoleophilicity (0°). High-resolution X-ray photoelectron spectroscopy (HR-XPS) showed that the alumina face was modified with lauric acid, while the intermetallic $\mathrm{FeNi_{3}}$. Significantly, the alumina face demonstrated 99 % efficiency in separating oils and microplastics, while the $\mathrm{FeNi_{3}}$ face facilitated the complete degradation (100 %) of methyl red within three minutes, as shown by ultraviolet-visible spectrophotometry. These results highlight the multifunctional properties of superhydrophobic $\mathrm{FeNi_{3}/Al_{2}O_{3}}$ Janus particles in removing and degrading various pollutants. |
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