Ferrate(VI) Activation with Nanoconfined Cu–Mg Sites for Water Treatment: Selective Cu(III) Production via Support-Dependent Redox Catalysis

ACS ES&T Engineering, Journal Year: 2024, Volume and Issue: 4(7), P. 1712 - 1724

Published: May 28, 2024

This study demonstrated that catalyst support played a crucial role in tailoring the redox reactions of ferrate (Fe(VI)) with nanoconfined Cu, promoting production Cu(III) as highly reactive nonradical oxidant. The reactivity heterogeneous Fe(VI) activator (confined Cu–Mg; present primarily oxidation state +2), prepared by calcining mixtures Cu/Mg nitrates presence inorganic/organic supports, was substantially higher g-C3N4 metal nanoconfinement host than SiO2 and montmorillonite k10 (k10). structure Cu–Mg sites sensitive to type. Mg adhesive agent bridged Cu atoms graphitized carbon phase cause CuMg cluster formation unique g-C3N4, which enhanced metal–support interactions thus facilitated interfacial electron transfer from for selective formation. superiority Cu–Mg–C3N4/Fe(VI) organic at pH = 8 arose preferential based on UV–visible absorption situ Raman spectra, toward multiple organics, density functional theory-calculated energetics clusters Cu(II)-to-Cu(III) conversion. contrasts behaviors Cu–Mg–SiO2 Cu–Mg–k10 (accommodating separate phases) activation, initiated Fe(V)/Fe(IV)-induced main degradation route.

Language: Английский

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Leveraging Co(II) as an activator to transform ferrate’s limitations into the motivation of Fe(V) oxidation

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159830 - 159830

Published: Jan. 1, 2025

Language: Английский

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Enhancing ferrate(VI) oxidation by ferrous iron for pretreating shale gas produced water and mitigating ultrafiltration membrane fouling

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 133248 - 133248

Published: April 1, 2025

Language: Английский

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Enhanced removal of phenolic compounds by ferrate(VI): Unveiling the Bi(III)-Bi(V) valence cycle with in situ formed bismuth hydroxide as catalyst

Water Research, Journal Year: 2023, Volume and Issue: 248, P. 120827 - 120827

Published: Nov. 7, 2023

Language: Английский

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Understanding Variations in Ferrate Detection through the ABTS Method in the Presence of Electron-Rich Organic Compounds

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(32), P. 14575 - 14584

Published: Aug. 2, 2024

The chromogenic reaction between 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate) (ABTS) and ferrate [Fe(VI)] has long been utilized for Fe(VI) content measurement. However, the presence of electron-rich organic compounds found to significantly impact detection using ABTS method, leading relative errors ranging from ∼88 100%. Reducing substances consumed

Language: Английский

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MnCe-based catalysts for removal of organic pollutants in urban wastewater by advanced oxidation processes - A critical review

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 370, P. 122773 - 122773

Published: Oct. 9, 2024

Language: Английский

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Unique role of Mn(II) in enhancing electro-oxidation of organic pollutants on anodes with low oxygen evolution potential at low current density

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 480, P. 136332 - 136332

Published: Nov. 1, 2024

Language: Английский

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Influence of Humic Acids on the Removal of Arsenic and Antimony by Potassium Ferrate

International Journal of Environmental Research and Public Health, Journal Year: 2023, Volume and Issue: 20(5), P. 4317 - 4317

Published: Feb. 28, 2023

Although the removal ability of potassium ferrate (K2FeO4) on aqueous heavy metals has been confirmed by many researchers, little information focuses difference between individual and simultaneous treatment elements from same family periodic table. In this project, two metals, arsenic (As) antimony (Sb) were chosen as target pollutants to investigate K2FeO4 influence humic acid (HA) in simulated water spiked lake samples. The results showed that efficiencies both gradually increased along Fe/As or Sb mass ratios. maximum rate As(III) reached 99.5% at a pH 5.6 ratio 4.6 when initial concentration was 0.5 mg/L; while 99.61% for Sb(III) 4.5 Fe/Sb 22.6 mg/L. It found HA inhibited As slightly efficiency significantly higher than with without addition K2FeO4. For co-existence system Sb, improved sharply after K2FeO4, Sb; latter better probably due stronger complexing Sb. X-ray energy dispersive spectroscopy (EDS), diffractometer (XRD), photoelectron (XPS) used characterize precipitated products reveal potential mechanisms based experimental results.

Language: Английский

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Ferrate (VI) oxidation of sulfamethoxazole enhanced by magnetized sludge-based biochar: Active sites regulation and degradation mechanism analysis

Environmental Pollution, Journal Year: 2024, Volume and Issue: 359, P. 124681 - 124681

Published: Aug. 10, 2024

Language: Английский

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Enhanced removal of phenolic pollutants over MnO2 initiated by peracetic acid: In situ generation of a heterogeneous Mn(III)-hydroperoxo complex

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 500, P. 157135 - 157135

Published: Nov. 1, 2024

Language: Английский

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