Promoting •OH-dominant Fenton-like process over peracetic acid activation by ultrafine FeOx nanoclusters anchored carbonaceous nanosheets

Fundamental Research, Journal Year: 2023, Volume and Issue: unknown

Published: May 1, 2023

Peracetic acid (PAA) has recently been considered a promising oxidant candidate for heterogeneous Fenton-like reactions; however, the main generation and contribution of organic radicals (R-O•) with unsatisfactory oxidation potential compromises wastewater decontamination efficiency. In this study, we demonstrate rational design synthesis ultrafine FeOx nanocluster-anchored carbonaceous nanosheets (UFe-CN) altering PAA activation pathway from R-O• to •OH dominant process via in situ framework collapse carbonization MIL-53(Fe). The constructed UFe-CN/PAA system effectively accelerated refractory micropollutant (e.g., p-nitrophenol (4-NP)) decomposition by enhanced formation (up 65.24 μmol L− 1) under wide pH range (3.0–9.0), outperforming benchmark iron-based catalyst counterparts 4.2–10.8 times. This outstanding catalytic activity UFe-CN is primarily attributed significant improvement electron mitigation, ca. 49 times higher than that its MIL-53(Fe) counterpart, interface catalysis reactions triggered iron species cycling. Furthermore, facilitate adaptive engineering, pollutant removal efficiency could be easily tuned varying several key treatment factors, including initial pH, concentration, dosage. More importantly, excellent practicality was demonstrated systematically evaluating impact water matrix, regeneration capability, Overall, study provides understanding •OH-dominated an effective development paradigm practical application PAA-based oxidation.

Language: Английский

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Bi3.64mo0.36o6.55/Bi4o5i2 S-Scheme Heterojunction Boosting Antibiotic Photodegradation: Insights from Interface to Performance

Published: Jan. 1, 2023

Language: Английский

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Photocatalytic degradation of ammonia nitrogen using a Z-type nano-TiO₂/LaMnO₃ heterojunction

New Journal of Chemistry, Journal Year: 2024, Volume and Issue: 48(12), P. 5506 - 5522

Published: Jan. 1, 2024

T/LMO is a z -type heterojunction with good photocatalytic degradation of ammonia nitrogen, which provides theoretical basis for the practical application new photocatalysts.

Language: Английский

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Enhanced visible light photo‐Fenton catalysis by Fe‐doping oligo‐layer natural molybdenite with efficient carrier spatial‐driven Fe³⁺/Fe²⁺ cycle

Photochemistry and Photobiology, Journal Year: 2024, Volume and Issue: 100(6), P. 1745 - 1758

Published: April 16, 2024

Abstract Developing cost‐effective and efficient photo‐Fenton catalysts is crucial for advancing technology. MoS 2 a representative transition metal disulfide with attractive photoresponsiveness, making it ideal preparing composite catalysts. In this study, natural molybdenite was innovatively utilized as source of (OM) to synthesize low‐cost Fe@MoS (OMF) catalyst by comminution adsorption, which then applied the remediation antibiotic‐contaminated water. The OMF composites exhibited significant catalytic activity, kinetic rate constant 0.022 min −1 , 3.1 times higher than that original OM (0.007 ), indicating 3% increase. This attributed synergistic effect many photogenerated electrons reversible Mo 4+ /Mo 6+ redox pairs, accelerated regeneration Fe 2+ . After three cyclic tests, concentrations dissolved ions remained below 0.38 mg/L 0.17 mg/L, respectively. indicates high reusability in experiments. Ultimately, main active species, •OH •O − were generated during process, contributing significantly TC degradation. study may serve reference development application mineral treatment organic wastewater.

Language: Английский

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Cooperation of acetate regulating and rGO modification of Bi2WO6 for enhancing the H2O2 photosynthesis coupled with selective glucose oxidation

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1010, P. 177533 - 177533

Published: Nov. 12, 2024

Language: Английский

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