Overlooked Role of Coexistent Hydrogen Peroxide in Activated Peracetic Acid by Cu(II) for Enhanced Oxidation of Organic Contaminants

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(35), P. 15741 - 15754

Published: Feb. 15, 2024

Cu(II)-catalyzed peracetic acid (PAA) processes have shown significant potential to remove contaminants in water treatment. Nevertheless, the role of coexistent H

Language: Английский

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Non-radical activation of low additive periodate by carbon-doped boron nitride for acetaminophen degradation: Significance of high-potential metastable intermediates

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 469, P. 133806 - 133806

Published: Feb. 15, 2024

Language: Английский

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Dual Nonradical Catalytic Pathways Mediated by Nanodiamond-Derived sp²/sp³ Hybrids for Sustainable Peracetic Acid Activation and Water Decontamination

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(19), P. 8554 - 8564

Published: April 18, 2024

Peracetic acid (PAA) oxidation catalyzed by metal-free carbons is promising for advanced water decontamination. Nevertheless, developing reaction-oriented and high-performance carbocatalysts has been limited the ambiguous understanding of intrinsic relationship between carbon chemical/molecular structure PAA transformation behavior. Herein, we comprehensively investigated activation using a family well-defined sp2/sp3 hybrids from annealed nanodiamonds (ANDs). The activity ANDs displays volcano-type trend, with respect to ratio. Intriguingly, sp3-C-enriched AND exhibits best catalytic phenolic oxidation, which different persulfate chemistry in sp2 network normally outperforms sp3 hybridization. At electron-rich sp2-C site, undergoes reduction reaction generate reactive complex (AND-PAA*) induces an electron-transfer pathway. sp3-C site adjacent C═O, oxidized surface-confined OH* O* successively, ultimately evolves into singlet oxygen (1O2) as primary species. Benefiting dual nonradical regimes on hybrids, mediates sustainable redox recycle continuously species attack contaminants, meanwhile maintaining structural/chemical integrity exceptional reusability cyclic runs.

Language: Английский

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Tailoring the selective generation of oxidative organic radicals for toxic-by-product-free water decontamination

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(23)

Published: May 28, 2024

Peracetic acid (PAA) is emerging as a versatile agent for generating long-lived and selectively oxidative organic radicals (R–O • ). Currently, the conventional transition metal–based activation strategies still suffer from metal ion leaching, undesirable by-products formation, uncontrolled reactive species production. To address these challenges, we present method employing BiOI with unique electron structure PAA activator, thereby predominantly CH 3 C(O)O radicals. The specificity of generation ensured superior performance BiOI/PAA system across wide pH range (2.0 to 11.0), even in presence complex interfering substances such humic acids, chloride ions, bicarbonate real-world water matrices. Unlike catalytic methods, degrades sulfonamides without producing any toxic by-products. Our findings demonstrate advantages decontamination pave way development eco-friendly decontaminations based on peroxides.

Language: Английский

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Ultrafast Fenton-like reaction using a peroxymonosulfate-mediated confined-Fe0 catalyst for the degradation of sulfamethoxazole

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 358, P. 124442 - 124442

Published: July 24, 2024

Language: Английский

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Catalytic Mechanism of Nanocrystalline and Amorphous Matrix in Fe‐Based Microwires for Advanced Oxidation

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Abstract The sustainable management of water resources is a critical global challenge, with advanced oxidation processes emerging as promising solution for addressing environmental pollution. However, the clear trade‐off between catalytic activity and stability in existing catalysts hinders their broader application. In this study, nanocrystalline/amorphous (N/A) microwire catalyst developed, featuring design that regulates nanocrystal size while preserving pure amorphous matrix. Unlike brittle annealed N/A microwires subjected to structural relaxation, as‐cast demonstrate outstanding performance oxidation. They can completely degrade pollutants within 60 s maintain up 40 reuse cycles. Theoretical calculations material characterizations reveal exceptional properties arise from combined effects residual stresses stored matrix synergistic effect nanocrystals phases. Moreover, optimally sized nanocrystalline phase optimizes atomic arrangement induces an structure low coordination number, providing abundant active sites. This also enhances adsorption characteristics persulfate accelerates electron transfer. These findings offer novel framework developing efficient stable wastewater treatment.

Language: Английский

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Sustainable Co(III)/Co(II) cycles triggered by Co-Zn bimetallic MOF encapsulating Fe nanoparticles for high-efficiency peracetic acid activation to degrade sulfamethoxazole: Enhanced performance and synergistic mechanism

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: 354, P. 128729 - 128729

Published: Feb. 1, 2025

Language: Английский

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Mechanism insights and interfacial engineering of S-scheme α-Fe2O3/BiVO4 heterojunction for effective persulfates activation

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 70, P. 107105 - 107105

Published: Jan. 31, 2025

Language: Английский

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Surface-adsorbed atom oxygen triggers nonradical formation via selective peroxymonosulfate decomposition by monolithic high-spin Co single-atom sites catalysts

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125207 - 125207

Published: Feb. 1, 2025

Language: Английский

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A state-of-the-art review on heterogeneous catalysts-mediated activation of peracetic acid for micropollutants degradation: Classification of reaction pathways, mechanisms, influencing factors and DFT calculation

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 477, P. 147051 - 147051

Published: Nov. 1, 2023

Language: Английский

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