Defective PTFE with Dense Active Sites Enabling Rapid H₂O₂ Production for Efficient Water Purification

Advanced Functional Materials, Год журнала: 2024, Номер 34(52)

Опубликована: Авг. 26, 2024

Abstract The electrosynthesis of hydrogen peroxide (H 2 O ) via two‐electron oxygen reduction reaction (2e − ‐ORR) enables high energy utilization and distributed H production. Rational catalyst design is essential for achieving efficient production, in which fluorine‐modified carbon materials hold great potential. However, conventional methods can only induce limited loading fluorine atoms carbon‐based catalysts, leading to unsatisfying electrochemical performance. Herein, the fluorine‐containing active sites with density 2e ‐ORR selectivity achieved by chained polytetrafluoroethylene precursors onto conductive substrates plasma‐assisted ball milling technique. Consequently, defect‐rich PTFE@CNTs show a over 95% yield more than 35 mol g −1 h . Furthermore, production be readily integrated water purification units decompose contaminants, showing 80% degradation multiple dyes within 1 removal ratio antibiotics 4 h. In addition, 100% sterilization staphylococcus aureus on‐site accumulating commercial saline 30 min. This defect engineering strategy through plasma provides promising universal avenue toward designing highly electrocatalysts as well other processes.

Язык: Английский

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Development of hydrothermal carbonaceous carbon/NH2-MIL-101(Fe) composite photocatalyst with in-situ production and activation of H2O2 capabilities for effective sterilization

Chemical Engineering Journal, Год журнала: 2024, Номер 498, С. 155263 - 155263

Опубликована: Авг. 30, 2024

Язык: Английский

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Anionic polyelectrolyte modified perovskite composite activated hydrogen peroxide to treat high-salinity organic wastewater: Dual effects of electrostatic interaction

Chemical Engineering Journal, Год журнала: 2024, Номер 488, С. 151033 - 151033

Опубликована: Апрель 5, 2024

Язык: Английский

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Enhanced photo-Fenton-like performance of biotemplated manganese-doped cobalt silicate catalysts

Journal of Colloid and Interface Science, Год журнала: 2023, Номер 652, С. 1812 - 1824

Опубликована: Авг. 29, 2023

Язык: Английский

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Single-atom catalysts-based Fenton-like processes for water contaminant management: a review

Surfaces and Interfaces, Год журнала: 2023, Номер 43, С. 103553 - 103553

Опубликована: Окт. 27, 2023

Язык: Английский

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Cetyltrimethylammonium Bromide-Modified Laponite@Diatomite Composites for Enhanced Adsorption Performance of Organic Pollutants

Langmuir, Год журнала: 2024, Номер 40(16), С. 8427 - 8439

Опубликована: Апрель 12, 2024

This work aims to enhance the adsorption performance of Laponite @diatomite for organic pollutants by modifying it with cetyltrimethylammonium bromide (CTAB). The microstructure and morphology CTAB-modified material were characterized using SEM, XRD, FTIR, BET, TG. Furthermore, influences key parameters, containing pH, adsorbent dosage, reaction time, temperature, on process investigated. kinetics, thermodynamics, isotherm models analyzed. Finally, potential mechanisms given based characterization. research findings indicate that CTAB-La@D exhibits good toward Congo red (CR) over a broad pH range. maximum capacity CR was 451.1 mg/g under optimum conditions (dosage = 10 mg, contact time 240 min, initial concentration 100 mg/L, temperature 25 °C, 7). conformed pseudo-second-order kinetic model, isotherms indicated more in line Langmuir physical adsorption. Thermodynamic analysis illustrates is exothermic spontaneous. Additionally, electrostatic hydrophobic effect investigated through XPS FTIR analysis. provides an effective pathway designing high-performance adsorbents removal dye, synthesized materials hold great capability practical utilization treatment wastewater.

Язык: Английский

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In situ Production of Hydroxyl Radicals via Three‐Electron Oxygen Reduction: Opportunities for Water Treatment

Angewandte Chemie International Edition, Год журнала: 2024, Номер unknown

Опубликована: Авг. 23, 2024

The electro-Fenton (EF) process is an advanced oxidation technology with significant potential; however, it limited by two steps: generation and activation of H

Язык: Английский

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Peroxymonosulfate-assisted photocatalysis system enhanced magnetic Fe3O4@P-C3N4 treatment of tetracycline wastewater: Multi-pathways mediated electrons migration to generate reactive species

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 678, С. 987 - 1000

Опубликована: Авг. 30, 2024

Язык: Английский

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Oxygen vacancy-dependent synergistic disinfection of antibiotic-resistant bacteria by BiOBr nanoflower induced H2O2 activation

Water Research, Год журнала: 2024, Номер 267, С. 122524 - 122524

Опубликована: Сен. 25, 2024

Язык: Английский

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The beneficial role of nano-sized Fe3O4 entrapped in ultra-stable Y zeolite for the complete mineralization of phenol by heterogeneous photo-Fenton under solar light

Chemosphere, Год журнала: 2023, Номер 345, С. 140400 - 140400

Опубликована: Окт. 18, 2023

Highly efficient, separable, and stable magnetic iron-based-photocatalysts produced from ultra-stable Y (USY) zeolite were applied, for the first time, to photo-Fenton removal of phenol under solar light. USY Zeolite with a Si/Al molar ratio 385 was impregnated vacuum an aqueous solution Fe2+ ions thermally treated (500-750 °C) in reducing atmosphere. Three catalysts, Fe-USY500°C-2h, Fe-USY600°C-2h Fe-USY750°C-2h, containing different amounts reduced iron species entrapped zeolitic matrix, obtained. The catalysts thoroughly characterized by absorption spectrometry, X-ray powder diffraction synchrotron source, followed Rietveld analysis, photoelectron spectroscopy, N2 adsorption/desorption at -196 °C, high-resolution transmission electron microscopy measurements room temperature. catalytic activity evaluated recirculating batch photoreactor irradiated light online analysis evolved CO2. Photo-Fenton results showed that catalyst obtained thermal treatment 500 °C 2 h atmosphere (FeUSY-500°C-2h) able completely mineralize 120 min irradiation time pH = 4 owing presence higher content nano-sized magnetite particles. latter promotes generation hydroxyl radicals more efficient way than Fe-USY prepared 600 750 because Fe3O4 °C. FeUSY-500°C-2h recovered water through separation reused five times without any significant worsening mineralization performances. characterization after process demonstrated it perfectly during reaction. optimized also effective tap water. Finally, possible mechanism assessed based on experimental tests carried out scavenger molecules, demonstrating play major role.

Язык: Английский

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