Controllable construction of an interpenetrating FeC2O4/amorphous SiO2 composite derived from copper smelting slag for efficient photocatalytic degradation of antibiotics

Journal of Water Process Engineering, Год журнала: 2025, Номер 70, С. 106973 - 106973

Опубликована: Янв. 13, 2025

Язык: Английский

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Treatment of high concentration phenol wastewater by low-frequency ultrasonic cavitation and long-term pilot scale study

Chemosphere, Год журнала: 2024, Номер 370, С. 143937 - 143937

Опубликована: Дек. 15, 2024

Язык: Английский

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Proton-Conducting Organic-Inorganic Nanocomposites with Fast Proton-Transfer Pathways Through Acid-Base Pairs

Опубликована: Янв. 1, 2025

The drive for global environmental sustainability is accelerating the transition to renewable energy technologies, with polymer electrolyte membrane fuel cells (PEMFCs) emerging as a key contender due their superior efficiency and compact design, although traditional Nafion®-based PEMFCs face critical challenges, such elevated costs diminished performance under high-temperature low-humidity environments, which limit broader implementation. To overcome these challenges meet stringent standards, development of non-fluorinated membranes essential ensure stable conductivity across diverse operating conditions. In this study, hybrid inorganic-organic matrix was synthesized via sol-gel process by combining (3-glycidoxypropyl)trimethoxysilane (GPTS) (3-mercaptopropyl)trimethoxysilane (MPTS) (referred G-M) subsequently functionalized three distinct basic additives-(aminopropyl)triethoxysilane (APTES), polydopamine (PDA), chitosan (CS). These additives were incorporated through electrostatic interactions between acidic components within composite enhance proton conductivity. resulting G-M/APTES, G-M/PDA, G-M/CS exhibited enhanced transport acid-base pairing matrix's –sulfonic acid (-SO3H) groups additives' amino (–NH2) groups. membrane, incorporating 20 wt% CS, highest through-plane (σth) 1.59 mS/cm, corresponding 4.68-fold improvement over pristine G-M matrix. Conversely, G-M/PDA 40 PDA, achieved remarkable in-plane (σin) 37.10 mS/cm conditions 80 °C 100% relative humidity (RH), reflecting an thousand-fold enhancement σin membranes. results underscore efficacy in advancing electrochemical applications.

Язык: Английский

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Synthesis of iron oxide/activated hydrochar composite from residual brewery biomass for remediation of water contaminated with chlorophenol

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Март 28, 2025

This study presents the development of iron oxide/activated hydrochar composites from brewer's spent grain (BSG) to remove 2-chlorophenol (2-CP) water via adsorption and Fenton oxidation. Two synthesis methods were employed: (1) incipient wetness impregnation hydrothermal carbonization (FeOHC) (2) chemical coprecipitation oxide onto surface (FeOHC-C). Characterization revealed mesoporous structures with areas ranging 44 66 m² g⁻¹ magnetite (Fe₃O₄) as predominant phase. Adsorption studies demonstrated equilibrium capacities 24.63 mg for FeOHC 18.70 FeOHC-C, kinetics best described by Elovich model behavior fitting Sips isotherm, suggesting a heterogeneous monolayer process. Thermodynamic analysis confirmed that was spontaneous exothermic, primarily driven physical interactions, including hydrogen bonding, π-π electrostatic attraction. oxidation experiments 2-CP degradation most efficient under acidic neutral conditions (pH 3.0-6.0), diminishing drastically at alkaline conditions. The fact good results obtained pH demonstrates its practical applicability. Reusability tests long-term stability materials, FeOHC-C maintaining sustained catalytic performance over multiple cycles. These findings highlight dual functionality adsorbents self-regenerating catalysts, offering promising scalable solution remediation chlorinated organic pollutants in water.

Язык: Английский

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Sustainable Treatment of Amoxicillin-Contaminated Wastewater Using Fe2+/H2O2/AC: Performance, Stability, and Environmental Impact

Processes, Год журнала: 2025, Номер 13(4), С. 1054 - 1054

Опубликована: Апрель 1, 2025

This study investigates the activation mechanisms of hydrogen peroxide (H2O2) using iron-activated carbon (Fe2+/H2O2/AC) for efficient degradation amoxicillin (AM) in wastewater. The system achieved a high efficiency 90% under alkaline conditions (pH 9), with singlet oxygen (1O2) and hydroxyl radicals (•OH) identified as dominant reactive species through scavenger experiments. High-performance liquid chromatography–mass spectrometry (HPLC-MS) analysis revealed by-products proposed reaction pathways, including loss amine groups, ring-opening oxidation, bond cleavage. structural morphological properties Fe2+/H2O2/AC were characterized X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) analysis. BET surface area was determined to be 128.36 m2/g, mesoporous structure facilitating mass transfer adsorption. systematically evaluated varying conditions, H2O2 concentration (25–250 mg/L), catalyst dosage (0.05–1.0 pH (3–10). Kinetic that process follows pseudo-second-order kinetics (R2 = 0.966), while adsorption isotherms best described by Langmuir model 0.98). Ecotoxicity tests indicated products are less harmful aquatic organisms. demonstrated excellent stability over three consecutive cycles, highlighting its potential long-term application treating pharmaceutical-contaminated

Язык: Английский

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One-pot green synthesis of Ag/Ni/Fe₃O₄-activated carbon beads for recyclable photo-Fenton antibiotic removal and antibacterial action: mechanistic study and optimization

RSC Advances, Год журнала: 2025, Номер 15(17), С. 13478 - 13496

Опубликована: Янв. 1, 2025

Multifunctional Ag/Ni/Fe 3 O 4 -carbon beads for self-cleaning antibiotic removal and antibacterial action.

Язык: Английский

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Proton-Conducting Organic-Inorganic Nanocomposites with Fast Proton-Transfer Pathways through Acid-Base Pairs

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 180684 - 180684

Опубликована: Май 1, 2025

Язык: Английский

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