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• W3002748829 endingPage "116620" @default.
• W3002748829 startingPage "116620" @default.
• W3002748829 abstract "Abstract A new method for the activation of peroxymonosulfate (PMS) using ferric ions (Fe3+) and visible light (λ > 420 nm) was developed and investigated as a water treatment method for the degradation of various organic pollutants. Complete degradation of 100 μM of 4-chlorophenol (4-CP) was achieved after 60 min in the presence of PMS (1 mM) and Fe3+ (1 mM) under visible-light irradiation. However, the degradation of 4-CP was negligible or minor in the absence of either PMS, Fe3+, or visible-light irradiation. The visible-light absorption of Fe3+ was enhanced through complexation with PMS (HSO5−−Fe(OH)2+), although PMS itself does not absorb visible light. Inner-sphere electron transfer in the HSO5−−Fe(OH)2+ complex under visible light generated sulfate (SO4 −) and hydroxyl radicals ( OH). The production of SO4 − and OH in the PMS/Fe3+/visible light system was verified by electron paramagnetic resonance (EPR) spectroscopy and fluorescence spectroscopy. The degradation of 4-CP was significantly reduced with isopropyl alcohol (as a scavenger for both OH and SO4 −), but only slightly reduced with tert-butyl alcohol (as a OH scavenger). This behavior suggests that SO4 − acts as a primary oxidant in the PMS/Fe3+/visible light system. The PMS/Fe3+/visible light system efficiently degraded a wide spectrum of organic pollutants (e.g., 4-CP, bisphenol A, 2,4-dimethylphenol, furfuryl alcohol, sulfamethoxazole, tryptophan, and sulfanilamide). In addition, the degradation efficiency of the PMS/Fe3+/visible light system remained constant over multiple cycles with the intermittent addition of PMS only." @default.
• W3002748829 created "2020-01-30" @default.
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• W3002748829 date "2020-06-01" @default.
• W3002748829 modified "2023-09-24" @default.
• W3002748829 title "Visible light-induced activation of peroxymonosulfate in the presence of ferric ions for the degradation of organic pollutants" @default.
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• W3002748829 doi "https://doi.org/10.1016/j.seppur.2020.116620" @default.
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