Removal of sulfonamide antibiotics by non-free radical dominated peroxymonosulfate oxidation catalyzed by cobalt-doped sulfur-containing biochar from sludge

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 466, P. 133535 - 133535

Published: Jan. 16, 2024

Language: Английский

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Goethite-MoS2 hybrid with dual active sites boosted peroxymonosulfate activation for removal of tetracycline: The vital roles of hydroxyl radicals and singlet oxygen

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 450, P. 138104 - 138104

Published: July 16, 2022

Language: Английский

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Cobalt-doped ZnAl-LDH nanosheet arrays as recyclable piezo-catalysts for effective activation of peroxymonosulfate to degrade norfloxacin: non-radical pathways and theoretical calculation studies

Nano Energy, Journal Year: 2023, Volume and Issue: 112, P. 108515 - 108515

Published: May 9, 2023

Language: Английский

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Current Mechanism of Peroxymonosulfate Activation by Cobalt-Based Heterogeneous Catalysts in Degrading Organic Compounds

ACS ES&T Engineering, Journal Year: 2023, Volume and Issue: 4(1), P. 19 - 46

Published: Aug. 14, 2023

Persulfate based advanced oxidation processes (PS-AOPs) have been regarded as a mainstream degradation technology of organic compounds due to their high efficiency in wastewater treatment. In particular, peroxymonosulfate (PMS) has unique structure and chemical properties, which can be efficiently activated by Co-based catalysts produce active species with potential. These usually determine the subsequent an efficient process, while intrinsic reaction mechanism behind this complex process remains unclear therefore impedes continual development scientific community. Recently, density functional theory (DFT) calculations emerged powerful means identify electronic properties distinguish energy changes PMS activation system. With assistance quantum calculation, increasing investigations conducted focusing on explaining phenomenon that occurred experiments. However, these mainly contributed part sometimes even differ from each other, lacking comprehensive summary DFT calculation results. review, we introduce main uses catalytic PMS, provide recent application examples heterogeneous different structures, then discuss detail. Finally, research results method field are summarized, future focus challenges put forward, is conducive guiding practical design further PS-AOPs creating value products.

Language: Английский

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Defect Engineering Boosted Peroxydisulfate Activation of Dual-Vacancy Cu–Fe Spinel Oxides for Soil Organics Decontamination

ACS ES&T Engineering, Journal Year: 2024, Volume and Issue: 4(8), P. 2025 - 2035

Published: June 3, 2024

Oxygen-limited environments in a compact soil medium significantly restrict the charge transfer of catalysts to degrade organics, considerably reducing catalytic performance. Defect engineering has been proposed modulate electronic structures and enrich active sites catalysts, but single vacancy defects are still insufficient overcome slow redox cycling between different valence states metals. Herein, sulfur-doped CuFe2O4/biochar (S–CuFe2O4/BC) with oxygen sulfur dual vacancies was synthesized for peroxydisulfate (PDS) activation. Experimental theoretical analysis reveals that S-doping treatment raises electron delocalization enlarge FeOh–O covalency, thereby lowering energy favor FeOh–PDS interaction higher oxidants' utilization efficiency. Consequently, more than 2-fold increase pseudo-first-order rate constant longevity organics degradation demonstrated. The stronger capability selective adsorption-oxidation toward hydrophobic organic contaminants also achieved. This work offers an insightful understanding collaboratively stimulating intrinsic activity catalyst decontamination.

Language: Английский

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MoS₂@MWCNTs with Rich Vacancy Defects for Effective Piezocatalytic Degradation of Norfloxacin via Innergenerated-H₂O₂: Enhanced Nonradical Pathway and Synergistic Mechanism with Radical Pathway

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(20), P. 26257 - 26271

Published: May 10, 2024

Molybdenum disulfide (MoS2)-based materials for piezocatalysis are unsatisfactory due to their low actual piezoelectric coefficient and poor electrical conductivity. Herein, 1T/3R phase MoS2 grown in situ on multiwalled carbon nanotubes (MWCNTs) was proposed. MoS2@MWCNTs exhibited the interwoven morphology of thin nanoflowers tubes, response 4.07 times higher than that via piezoresponse force microscopy (PFM) characterization. superior activity with a 91% degradation rate norfloxacin (NOR) after actually working 24 min (as rhodamine B, reached 100% within 18 min) by pulse-mode ultrasonic vibration-triggered piezocatalysis. It found removing pollutants attributed synergistic effect free radicals (•OH O2•–) nonfree radical (1O2, key role) pathways, together innergenerated-H2O2 promoting rate. 1O2 can be generated electron transfer energy pathways. The presence oxygen vacancies (OVs) induced transformation O2 triplet transfer. fast charge heterostructure coexistence sulfur OVs enhanced carrier separation resulting prominent effect. This work opens up new avenues development efficient piezocatalysts utilized environmental purification.

Language: Английский

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Dual acceleration of Co(III)/Co(II) redox cycle boosts peroxymonosulfate activation for superfast chloramphenicol degradation

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 334, P. 126321 - 126321

Published: Jan. 19, 2024

Language: Английский

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One-step synthesis of CoxS/Ni3S2@NF on 3D nickel foam with different sulfur sources as a novel heterogeneous catalyst efficient activation of peroxymonosulfate in lomefloxacin degradation

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 484, P. 149562 - 149562

Published: Feb. 12, 2024

Language: Английский

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MOF-templated hollow cobalt sulfide as an enhanced Oxone activator for degradation of UV Absorber: Key role of sulfur Vacancy-Induced highly active CoII sites

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 453, P. 139699 - 139699

Published: Oct. 10, 2022

Language: Английский

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An anode fabricated by Co electrodeposition on ZIF-8/CNTs/CF for peroxymonosulfate (PMS) activation

Chemosphere, Journal Year: 2022, Volume and Issue: 313, P. 137384 - 137384

Published: Nov. 24, 2022

Language: Английский

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