Amb motiu del tancament d'estiu, la validació de documents es reprendrà a partir del 28 d'agost de 2026. Disculpeu les molèsties.
Con motivo del cierre de verano, la validación de documentos se reanudará a partir del 28 de agosto de 2026. Disculpad las molestias
Due to the summer closure, document validation will resume starting August 28, 2026. We apologize for any inconvenience.

Fitxers

940227.pdf (12.36 MB)

Tipus de document

Article

Versió

Versió publicada

Data de publicació

2026-10

Llicència de publicació

cc-by (c) Huidobro, Laura et al., 2026
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/230896

Bioinspired hierarchical electrospun TiO<sub>2</sub>/BiOI nanofibers for multifunctional photocatalytic PMS activation: Antibiotics and microplastics removal

Títol de la revista

Autors

Director/Tutor

ISSN de la revista

Títol del volum

Recurs relacionat

https://doi.org/10.1016/j.jece.2026.123947

Resum

Emerging antibiotics and microplastics are poorly removed by conventional treatment processes, requiring oxidation processes that address both dissolved and particulate contaminants. Hierarchical electrospun TiO2/BiOI nanofibers (TBO1–TBO4; BiOI growth 2–16 h) were engineered for photocatalytic peroxymonosulfate (PMS) activation under UV-A (365 nm) and visible light. At pH 7 and 20 °C (sulfamethoxazole, SMX, 5 ppm; catalyst 0.50 g L−1; PMS 2.5 mM), TBO3 achieved near-complete, blank-corrected total organic carbon (TOC) removal (≥99%) in 120 min under visible light + PMS. For a four-component multipollutant solution (20 ppm total), TBO3 reached near-complete TOC removal after blank correction (reported as ≥99%, with residual TOC close to the method quantification limit) in 120 min and maintained activity over nine cycles under visible light + PMS (≤0.7 %age-point change; leaching below detection), whereas UV-A + PMS decreased to 85.3% by cycle 9 with ppb-level leaching. Quenching and probe assays indicate a radical-accessible PMS-assisted oxidation network; strong suppression by tert-butanol and methanol supports major •OH-accessible oxidation with a sulfate-radical-type contribution. Under visible light (465–470 nm) + PMS, cross-linked polystyrene (PS) microplastics (20 ppm solids) underwent surface erosion, cracking, delamination, and fragmentation, accompanied by release of dissolved/sub-10 μm carbonaceous products in scaled-up tests, supporting partial oxidative transformation of particulate microplastics.

Matèries

Fotoelectroquímica, Fotocatàlisi, Microplàstics

Matèries (anglès)

Photoelectrochemistry, Photocatalysis, Microplastics

Citació

Col·leccions

Articles publicats en revistes (Ciència dels Materials i Química Física)
Articles publicats en revistes (Institut de Nanociència i Nanotecnologia (IN2UB))

Citació

HUIDOBRO, Laura, et al. Bioinspired hierarchical electrospun TiO2/BiOI nanofibers for multifunctional photocatalytic PMS activation: Antibiotics and microplastics removal. Journal of Environmental Chemical Engineering. 2026. Vol. 14, num. 5, pags. 1-20. ISSN 2213-2929. [consulted: 2 of August of 2026]. Available at: https://hdl.handle.net/2445/230896

Exportar metadades

JSON - METS

Compartir registre