Electron transfer enhancing the Mn(II)/Mn(III) cycle in MnO/CN towards catalytic ozonation of atrazine via a synergistic effect between MnO and CN

Water Research, Год журнала: 2023, Номер 230, С. 119574 - 119574

Опубликована: Янв. 4, 2023

Язык: Английский

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Strategies based on electron donors to accelerate Fe(III)/Fe(II) cycle in Fenton or Fenton-like processes

Chemical Engineering Journal, Год журнала: 2022, Номер 454, С. 140096 - 140096

Опубликована: Ноя. 1, 2022

Язык: Английский

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Single Atom Environmental Catalysis: Influence of Supports and Coordination Environments

Advanced Functional Materials, Год журнала: 2023, Номер 33(50)

Опубликована: Авг. 27, 2023

Abstract Single‐atom catalysts (SACs) are desirable in environmental catalysis due to friendliness, structural stability, and maximum utilization of active metal sites. Extensive research has compared the catalytic performance between SACs with different single‐atom metals. However, their is also highly dependent on supports, which play an important role modulating local coordination environment SACs. Unfortunately, a comprehensive review that systematically discusses relationship supports environment, as well combined effects scare. In this review, three widely investigated applications including advanced oxidation processes (AOPs), mainly Fenton Fenton‐like reactions, nitrate reduction reaction (NO 3 RR) focused. By correlating characterization results, performances, computational environments reactivity examined detail, from origin pathways AOPs NO RR attempted reveal. Finally look forward for potential opportunities challenges on‐demand applications, provided.

Язык: Английский

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Redox-Active Polymers as Robust Electron-Shuttle Co-Catalysts for Fast Fe³⁺/Fe²⁺ Circulation and Green Fenton Oxidation

Environmental Science & Technology, Год журнала: 2023, Номер 57(8), С. 3334 - 3344

Опубликована: Фев. 3, 2023

Accelerating the rate-limiting Fe3+/Fe2+ circulation in Fenton reactions through addition of reducing agents (or co-catalysts) stands out as one most promising technologies for rapid water decontamination. However, conventional such hydroxylamine and metal sulfides are greatly restricted by three intractable challenges: (1) self-quenching effects, (2) heavy dissolution, (3) irreversible capacity decline. To this end, we, first time, introduced redox-active polymers electron shuttles to expedite cycle promote H2O2 activation. The reduction Fe3+ mainly took place at active N–H or O–H bonds a proton-coupled transfer process. As carriers, H atoms solid phase could effectively inhibit radical quenching, avoid maintain long-term via facile regeneration. Experimental density functional theory (DFT) calculation results indicated that activity different shows volcano curve trend function energy barrier, highest occupied molecular orbital–lowest unoccupied orbital (HOMO–LUMO) gap, vertical ionization potential. Thanks appropriate redox ability, polyaniline outperforms other (e.g., poypyrrole, hydroquinone resin, poly(2,6-diaminopyridine), hexaazatrinaphthalene framework) with iron up 5.5 mmol/g, which corresponds state transformation from leucoemeraldine emeraldine. Moreover, proposed system exhibited high pollutant removal efficiency flow-through reactor 8000 bed volumes without an obvious decline performance. Overall, work established green sustainable oxidation system, offers great potential practical organic wastewater remediation.

Язык: Английский

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Polar electric field-modulated peroxymonosulfate selective activation for removal of organic contaminants via non-radical electron transfer process

Water Research, Год журнала: 2023, Номер 246, С. 120678 - 120678

Опубликована: Сен. 29, 2023

Язык: Английский

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Metal sulfides as emerging materials for advanced oxidation of wastewater: Recent developments, challenges, and prospects

Coordination Chemistry Reviews, Год журнала: 2024, Номер 509, С. 215765 - 215765

Опубликована: Март 20, 2024

Язык: Английский

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Overcoming the Activity–Stability Trade-Off in Heterogeneous Electro-Fenton Catalysis: Encapsulating Carbon Cloth-Supported Iron Oxychloride within Graphitic Layers

ACS Catalysis, Год журнала: 2022, Номер 12(21), С. 13334 - 13348

Опубликована: Окт. 18, 2022

Maintaining a long-term service life of catalytic materials under the established configuration and design concept is key focus in process research development, especially for iron-functionalized cathode-based heterogeneous electro-Fenton (EF) processes operated harsh conditions. Herein, versatile robust encapsulation engineering strategy proposed based on tightly covering surface conventional cathodes with an ultrathin carbon layer to significantly improve stability composite without causing activity loss. Taking cloth-supported iron oxychloride (FeOCl/CC) as model cathode catalyst, it was successfully encapsulated reduced graphene oxide protective shell (FeOCl/CC@rGO) using electrophoretic deposition method, thereby achieving high due negligible leaching (only 0.57% FeOCl/CC), while maintaining almost unaffected electron penetration effect. Experimental analysis structure–activity relationship theoretical calculations were used establish underlying molecular mechanism penetration-triggered H2O2 activation outermost rGO. This study uses effective approach overcome activity–stability trade-off integrated EF processes, providing guidance rational high-performance structure.

Язык: Английский

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Sulfide enhances the Fe(II)/Fe(III) cycle in Fe(III)-peroxymonosulfate system for rapid removal of organic contaminants: Treatment efficiency, kinetics and mechanism

Journal of Hazardous Materials, Год журнала: 2022, Номер 435, С. 128970 - 128970

Опубликована: Апрель 20, 2022

Язык: Английский

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New insight into carbon materials enhanced Fenton oxidation: A strategy for green iron(III)/iron(II) cycles

Chemical Engineering Journal, Год журнала: 2022, Номер 450, С. 138423 - 138423

Опубликована: Авг. 2, 2022

Язык: Английский

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Microenvironment engineering of single-atom catalysts for persulfate-based advanced oxidation processes

Chemical Engineering Journal, Год журнала: 2022, Номер 447, С. 137551 - 137551

Опубликована: Июнь 14, 2022

Язык: Английский

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