Nanoconfinement steers nonradical pathway transition in single atom fenton-like catalysis for improving oxidant utilization

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: June 22, 2024

Abstract The introduction of single-atom catalysts (SACs) into Fenton-like oxidation promises ultrafast water pollutant elimination, but the limited access to pollutants and oxidant by surface catalytic sites intensive consumption still severely restrict decontamination performance. While nanoconfinement SACs allows drastically enhanced reaction kinetics, detailed regulatory mechanisms remain elusive. Here, we unveil that, apart from local enrichment reactants, pathway shift is also an important cause for reactivity enhancement nanoconfined SACs. electronic structure cobalt site altered confining it within nanopores mesostructured silica particles, which triggers a fundamental transition singlet oxygen electron transfer 4-chlorophenol oxidation. changed accelerated interfacial mass render system up 34.7-fold higher degradation rate raised peroxymonosulfate utilization efficiency (from 61.8% 96.6%) relative unconfined control. It demonstrates superior other electron-rich phenolic compounds, good environment robustness, high stability treating real lake water. Our findings deepen knowledge catalysis may inspire innovations in low-carbon purification technologies heterogeneous applications.

Language: Английский

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Ball milling treatment of Mn3O4 regulates electron transfer pathway for peroxymonosulfate activation

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 467, P. 143339 - 143339

Published: May 4, 2023

Language: Английский

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Activation of peroxymonosulfate by g-C3N4/ε-MnO2 microspheres for nonradical pathway degradation of organic pollutants in water: Catalytic mechanism and degradation path

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 459, P. 141643 - 141643

Published: Feb. 2, 2023

Language: Английский

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Oxidative polymerization versus degradation of organic pollutants in heterogeneous catalytic persulfate chemistry

Water Research, Journal Year: 2024, Volume and Issue: 255, P. 121485 - 121485

Published: March 18, 2024

Catalytic polymerization pathways in advanced oxidation processes (AOPs) have recently drawn much attention for organic pollutant elimination owing to the rapid removal kinetics, high selectivity, and recovery of carbon from wastewater. This work presents a review on regimes AOPs their applications wastewater decontamination. The mainly highlights three critical issues reactions induced by persulfate activation (Poly-PS-AOPs), including heterogeneous catalysts, pathways, properties substrates. dominant influencing factors selection reactive oxygen species, substrates are discussed detail. Moreover, we systematically demonstrate merits challenges Poly-PS-AOPs upon degradation polymer synthesis. We particularly highlight that technology could be promising treatment industrial containing heterocyclic organics synthesis polymers polymer-functionalized materials environmental energy applications.

Language: Английский

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Mechanically treated Mn2O3 triggers peracetic acid activation for superior non-radical oxidation of micropollutants: Identification of reactive complexes

Water Research, Journal Year: 2024, Volume and Issue: 255, P. 121486 - 121486

Published: March 19, 2024

Language: Английский

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Discerning the Relevance of Singlet Oxygen in Pollutant Degradation in Peroxymonosulfate Activation Processes

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(31), P. 14005 - 14012

Published: July 23, 2024

Significant efforts have recently been exerted toward construction of singlet oxygen (

Language: Английский

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Mineral-mediated stability of organic carbon in soil and relevant interaction mechanisms

Eco-Environment & Health, Journal Year: 2024, Volume and Issue: 3(1), P. 59 - 76

Published: Jan. 3, 2024

Soil, the largest terrestrial carbon reservoir, is central to climate change and relevant feedback environmental health. Minerals are essential components that contribute over 60% of soil storage. However, how interactions between minerals organic shape transformation stability remains poorly understood. Herein, we critically review primary mechanisms, including sorption, redox reaction, co-precipitation, dissolution, polymerization, catalytic reaction. These interactions, highly complex with combination multiple processes, greatly affect through following processes: (1) formation or deconstruction mineral-organic association; (2) oxidative minerals; (3) polymerization (4) varying association according mineral transformation. Several pieces evidence related turnover during interaction in real eco-environment then demonstrated. We also highlight current research gaps outline priorities, which may map future directions for a deeper mechanisms-based understanding storage capacity considering its minerals.

Language: Английский

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Efficient purification of tetracycline over ZIF-8-encapsulated Mn2O3 via persulfate activation: Pivotal roles of heterostructure and surface Mn(Ⅱ)

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 483, P. 149259 - 149259

Published: Feb. 2, 2024

Language: Английский

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Oxidative Polymerization in Water Treatment: Chemical Fundamentals and Future Perspectives

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 6, 2025

For several decades, the methodology of complete destruction organic pollutants via oxidation, i.e., mineralization, has been rooted in real water treatment applications. Nevertheless, this industrially accepted protocol is far from sustainable because excessive input chemicals and/or energy as well unregulated carbon emission. Recently, there have emerging studies on removal a completely different pathway, polymerization, meaning that target undergo oxidative polymerization reactions to generate polymeric products. These collectively shown compared conventional mineralization pathway allows more efficient pollutants, largely reduced chemicals, and suppressed In review, we aim provide comprehensive examination fundamentals process, current state-of-the-art strategies for regulation both kinetic thermodynamic perspectives, resource recovery formed end, limitations process pollutant are discussed, with perspectives future studies. Hopefully, review could not only critical insight advancement polymerization-oriented technologies greener manner but also stimulate paradigm innovations low-carbon treatment.

Language: Английский

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Hollow multi-shelled NiO nanoreactor for nanoconfined catalytic degradation of organic pollutants via peroxydisulfate activation

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 325, P. 122359 - 122359

Published: Jan. 4, 2023

Language: Английский

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