Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Zeitschriften |
| DOI | 10.1016/j.colsurfa.2026.140410 |
| Titel (primär) | Harnessing the Co-Fe synergy: A novel Co-doped FeOCl for peracetic acid activation to efficiently degrade carbamazepine |
| Autor | Hu, J.; Zhang, H.
; Xia, S.; Cai, Y.; Shi, Z.; Deng, J. |
| Quelle | Colloids and Surfaces A-Physicochemical and Engineering Aspects |
| Erscheinungsjahr | 2026 |
| Department | TECH |
| Band/Volume | 742, Part 1 |
| Seite von | art. 140410 |
| Sprache | englisch |
| Topic | T7 Bioeconomy |
| Supplements | Supplement 1 |
| Keywords | Co-doped FeOCl; Peracetic acid; Carbamazepine degradation; Advanced oxidation processes; Synergistic mechanism |
| Abstract | The widespread occurrence of carbamazepine (CBZ) in aquatic environments necessitates efficient water treatment technologies. This study developed a cobalt-doped iron oxychloride (Co-FeOCl) catalyst via a facile calcination method to activate peracetic acid (PAA) for enhanced degradation of CBZ. The incorporation of Co into the FeOCl structure dramatically boosted the catalytic performance, with 0.5Co-FeOCl exhibiting superior activity compared to pristine FeOCl. The 0.5Co-FeOCl/PAA system achieved an apparent rate constant of 0.039 min⁻1, 19.5 and 5.6 times higher than that of the PAA alone (0.002 min⁻1) and FeOCl/PAA (0.007 min⁻1) systems, respectively. Mechanistic investigations revealed that the degradation was primarily driven by organic radicals (CH3C(O)OO• and CH3C(O)O•) and high-valent metal species (Co(IV) and Fe(IV)). The Co doping established synergistic Fe(II)/Fe(III)-Co(II)/Co(III) redox cycles, effectively accelerating the rate-limiting Fe(III) reduction step and facilitating continuous generation of reactive species. XPS analysis confirmed an increased surface Fe(II) content after reaction, supporting this synergistic mechanism. Density functional theory (DFT) calculations proved that Co sites exhibit superior adsorption capacity for PAA compared to Fe sites on three main facets. This work not only presents 0.5Co-FeOCl as a highly efficient and stable catalyst for PAA activation but also provides fundamental insights into the synergistic mechanisms in bimetallic/PAA systems for remediating refractory organic pollutants. |
| Hu, J., Zhang, H., Xia, S., Cai, Y., Shi, Z., Deng, J. (2026): Harnessing the Co-Fe synergy: A novel Co-doped FeOCl for peracetic acid activation to efficiently degrade carbamazepine Colloid Surf. A-Physicochem. Eng. Asp. 742, Part 1 , art. 140410 10.1016/j.colsurfa.2026.140410 |
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