Accurate identification of radicals by in-situ electron paramagnetic resonance in ultraviolet-based homogenous advanced oxidation processes

Water Research, Journal Year: 2022, Volume and Issue: 221, P. 118747 - 118747

Published: June 15, 2022

Language: Английский

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Zwitterion Functionalized Graphene Oxide/Polyacrylamide/Polyacrylic Acid Hydrogels with Photothermal Conversion and Antibacterial Properties for Highly Efficient Uranium Extraction from Seawater

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(32)

Published: May 5, 2023

Abstract In this study, graphene oxide (GO) and polyacrylamide/polyacrylic acid (PAM/PAA) are used to prepare hydrogels with photothermal conversion properties for highly efficient uranium extraction from seawater. Zwitterionic 2‐methacryloyloxy ethyl phosphorylcholine (MPC) is introduced in the PAM/PAA/GO hydrogel obtain PAM/PAA/GO/MPC (PAGM), exhibiting good antibacterial properties. PAGM demonstrates specific adsorption of (VI) (U(VI)). Under light conditions, capacity reaches 196.12 mg g −1 (pH = 8, t 600 min, C 0 99.8 L , m/v 0.5 ). The only 160.29 under dark conditions 22.5% higher than that dark. process fitted using Langmuir pseudo‐second‐order models. Furthermore, exhibits repeatability stability after five adsorption–desorption cycles. a U(VI) 6.1 storage one month natural X‐ray photoelectron spectroscopy (XPS) results demonstrate coordination amino, carboxyl, hydroxyl groups primary mechanism adsorption. confirmed through detailed density functional theory calculations. durability, high efficiency, properties, Thus, it promising candidate

Language: Английский

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The synergy of sulfur vacancies and heterostructure on CoS@FeS nanosheets for boosting the peroxymonosulfate activation

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 446, P. 136759 - 136759

Published: May 4, 2022

Language: Английский

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Efficient peroxymonosulfate activation by magnetic MoS2@Fe3O4 for rapid degradation of free DNA bases and antibiotic resistance genes

Water Research, Journal Year: 2023, Volume and Issue: 239, P. 120026 - 120026

Published: May 1, 2023

Language: Английский

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Ozone- and Hydroxyl Radical-Induced Degradation of Micropollutants in a Novel UVA-LED-Activated Periodate Advanced Oxidation Process

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(47), P. 18607 - 18616

Published: Feb. 6, 2023

In this study, novel light emitting diode (LED)-activated periodate (PI) advanced oxidation process (AOP) at an irradiation wavelength in the ultraviolet A range (UVA, UVA-LED/PI AOP) was developed and investigated using naproxen (NPX) as a model micropollutant. The AOP remarkably enhanced degradation of NPX seven other selected micropollutants with observed pseudo-first-order rate constants ranging from 0.069 ± 0.001 to 4.50 0.145 min-1 pH 7.0, demonstrating broad-spectrum micropollutant ability. Lines evidence experimental analysis kinetic modeling confirmed that hydroxyl radical (•OH) ozone (O3) were dominant species generated AOP, they contributed evenly degradation. Increasing negatively affected degradation, could be well explained by decreased quantum yield (ΦPI) PI. kinetics presence water matrices (i.e., chloride, bicarbonate, humic acid) real waters examined, underlying mechanisms illustrated. total nine transformation products identified mainly via hydroxylation, dealkylation, pathways. proposed might promising technology for treatment aqueous solutions. pivotal role ΦPI during photolysis PI may guide future design light-assisted AOPs.

Language: Английский

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Electrochemical activation of periodate with graphite electrodes for water decontamination: Excellent applicability and selective oxidation mechanism

Water Research, Journal Year: 2023, Volume and Issue: 240, P. 120128 - 120128

Published: May 25, 2023

Language: Английский

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Activation of periodate by N-doped iron-based porous carbon for degradation of sulfisoxazole: Significance of catalyst-mediated electron transfer mechanism

Journal of Hazardous Materials, Journal Year: 2023, Volume and Issue: 457, P. 131790 - 131790

Published: June 7, 2023

Language: Английский

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Solar driven photocatalytic disinfection by Z-scheme heterojunction of In2O3/g-C3N4: Performance, mechanism and application

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 340, P. 123235 - 123235

Published: Aug. 28, 2023

Language: Английский

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Ru(III)-Periodate for High Performance and Selective Degradation of Aqueous Organic Pollutants: Important Role of Ru(V) and Ru(IV)

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(32), P. 12094 - 12104

Published: July 25, 2023

In this study, Ru(III) ions were utilized to activate periodate (PI) for oxidation of trace organic pollutants (TOPs, e.g., carbamazepine (CBZ)). The Ru(III)/PI system can significantly promote the CBZ in a wide initial pH range (3.0–11.0) at 1 μM Ru(III), showing much higher performance than transition metal (i.e., Fe(II), Co(II), Zn(II), Fe(III), Cu(II), Ni(II), Mn(II), and Ce(III)) noble ion Ag(I), Pd(II), Pt(II), Ir(III)) activated PI systems. Probe experiments, UV–vis spectra, X-ray absorption near-edge structure (XANES) spectra confirmed high-valent Ru-oxo species (Ru(V)=O) as dominant oxidant process. Because role Ru(V)=O, process exhibited remarkable selectivity strong anti-interference TOPs complex water matrices. Ru(V)=O undertake 1-e– 2-e– transfer reactions via catalytic cycles → Ru(IV) respectively. utilization efficiency approach 100% under optimal conditions. stoichiometrically transformed into IO3– without production undesired iodine (e.g., HOI I2). This study developed an efficient environmentally benign advanced rapid removal enriched understandings on reactivity Ru cycles.

Language: Английский

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Solar-light-activated periodate for degradation and detoxification of highly toxic 6PPD-quinone at environmental levels

Nature Water, Journal Year: 2024, Volume and Issue: 2(5), P. 453 - 463

Published: April 25, 2024

Language: Английский

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