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Confined Fe single atomic sites on (100) plane of anatase TiO2 nanofibers boost white LED driven Fenton-like norfloxacin degradation.
- Source :
-
Journal of Cleaner Production . Jan2023, Vol. 382, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- Developing efficient and sustainable photocatalyst is crucial for antibiotic degradation in water treatment. Iron (Fe) species modified semiconductor photocatalysts have been widely used in visible-light driven Fenton-like systems. However, the limited dispersion of Fe sites and low redox rate of the Fe(III)/Fe(II) restrict the catalytic performance. Herein, the atomic Fe sites with highly dispersed coordination centers were confined (100) facets exposed titania nanofibers (Fe-TNFs) for efficient photocatalytic Fenton-like norfloxacin (NOR) degradation. The optimized Fe-TNFs catalyst could achieve 95% NOR removal after 5 h of white LED illumination, which is 15% higher than that of nanostructured Fe species. The high performance is credited for the enhanced visible light absorption, and the efficient electron transfer through Fe–O bonds in Fe-TNFs enables the fast cyclic transformation of Fe(III)/Fe(II), which can promote the continuous production of •OH in the photocatalytic Fenton-like system. This study can provide technical support for the developing a feasible and sustainable wastewater treatment solution, and provide reference for the fate and risk assessment of antibiotics in the environment. • Atomic Fe was confined on (100) exposed TiO 2 by molten salt method. • Single atomic Fe sites improve visible light absorption. • Atomic Fe enhances the cyclic transformation of Fe(III)/Fe(II). • Fe sites accelerate the formation of •OH for efficient norfloxacin degradation. [ABSTRACT FROM AUTHOR]
- Subjects :
- *NORFLOXACIN
*NANOFIBERS
*SUSTAINABILITY
*TITANIUM dioxide
*LED lighting
*FUSED salts
Subjects
Details
- Language :
- English
- ISSN :
- 09596526
- Volume :
- 382
- Database :
- Academic Search Index
- Journal :
- Journal of Cleaner Production
- Publication Type :
- Academic Journal
- Accession number :
- 161175689
- Full Text :
- https://doi.org/10.1016/j.jclepro.2022.135161