Chang, Z., Huang, L., Wang, J. et al. Photocatalytic Degradation of Levofloxacin and Vancomycins by Mn-Doped ZnO Nanoparticles. Catal Lett 155, 252 (2025). https://doi.org/10.1007/s10562-025-05068-8
TITLE : Photocatalytic Degradation of Levofloxacin and Vancomycins by Mn-Doped ZnO Nanoparticles.
abstract
The removal of antibiotic contaminations from water is essential to mitigate the spread of antibiotic resistance, and photocatalysis has emerged as a promising environmental remediation technology. In this study, ZnO nanopowders with varying Mn doping amounts were successfully synthesized via a facile co-precipitation calcination method using PEG-assisted. FTIR, XRD, SEM-EDS and XPS were used to prove the uniform doping of Mn in ZnO lattice. Optical and electrochemical analyses (DRS, Mott-Schottky, TPR and EIS) demonstrated that Mn doping significantly enhanced the photoelectric properties of ZnO, extending its light absorption into the visible region and improving charge transfer efficiency. Under the irradiation of 55 W xenon lamp, 2%Mn–ZnO showed the highest photodegradation efficiency (98.4%) for LVF. It is worth noting that the photocatalytic degradation of vancomycins antibiotics was first reported in this study, with degradation rates reaching 67.5% for vancomycin (VAN) and 86.0% for teicoplanin (TEI). After four cycles, the photocatalyst maintained good recyclability without observable structural or morphological changes. Free radical capture experiments revealed that h+ and ·O2− served as the primary reactive species in the photocatalytic reaction of LVF and VAN, while ·O2− played a key role in the photocatalytic degradation of TEI. This work not only demonstrates the great potential of 2%Mn–ZnO for antibiotic removal in contaminated water, but also provides valuable experience for the degradation of vancomycin-class antibiotics.
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Selective Synthesis of Sulfoxides through Oxidation of Sulfides with Sodium Hypochlorite Pentahydrate Crystals
