Insight into the degradation mechanism of mixed VOCs oxidation over Pd/UiO-66(Ce) catalysts: Combination of operando spectroscopy and theoretical calculation

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 354, P. 129443 - 129443

Published: Sept. 1, 2024

Language: Английский

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Strategic defect engineering in TiO2 catalysts through electron beam irradiation: Unraveling enhanced photocatalytic pathways for multicomponent VOCs degradation

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 359, P. 130804 - 130804

Published: Nov. 27, 2024

Language: Английский

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Insight into the Synergistic Effect of Binary Nonmetallic Codoped Co₃O₄ Catalysts for Efficient Ethyl Acetate Degradation under Humid Conditions

JACS Au, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

The synthesis of high-performance catalysts for volatile organic compounds (VOCs) degradation under humid conditions is essential their practical industrial application. Herein, a codoping strategy was adopted to synthesize the N-Co3O4-C catalyst with N, C low-temperature ethyl acetate (EA) conditions. Results showed that exhibited great catalytic activity (T 90 = 177 °C) and water resistance (5.0 vol% H2O, T 178 EA degradation. Characterization results suggested C, N weakened Co-O bond strength, increased surface Co3+ Oads species, improved redox ability mobility lattice oxygen which boosted performance Meanwhile, N-doping-induced vacancies could interact vapor generate extra active enhanced resistance. Importantly, based on series characterization technologies, in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), theoretical calculations, synergistic effect systematically investigated elucidated. doping induced increase area weakening adsorption species activation dissociate oxidize EA, forming key intermediate, acid. gaseous form attacking breaking C-C acid accelerate deep oxidation, synergistically facilitated

Language: Английский

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Degradation of volatile organic pollutants over manganese-based catalysts by defect engineering: A review

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 131934 - 131934

Published: Feb. 1, 2025

Language: Английский

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Electron Beam Irradiation-Induced Defects Enhance Pt-TiO2 Photothermal Catalytic Degradation in PAEs: A Performance and Mechanism Study

Molecules, Journal Year: 2025, Volume and Issue: 30(3), P. 697 - 697

Published: Feb. 5, 2025

Phthalic acid esters (PAEs), ubiquitous semi-volatile organic compounds (SVOCs) in indoor environments, pose adverse effects on human health. However, their degradation mechanisms and pathways remain unclear. Herein, we developed an efficient photothermal catalyst by introducing defects (oxygen vacancies, OVs) TiO2 (P25) surfaces via electron beam irradiation technology with different doses (100, 300, 500, 700 kGy). The was employed as a support to prepare Pt-TiO2 catalysts for the of di (2-ethylhexyl) phthalate (DEMP) dimethyl (DMP), two representative PAEs. pre-treated 300 kGy dose supported Pt (Pt-Ti-P-300) presented optimal catalytic performance DEMP DMP degradation. Characterization results confirmed that OVs were successfully introduced catalysts. Meanwhile, induced expanded light absorption range improved generation separation photogenerated carriers, which significantly enhanced activity PAE Importantly, mechanism pathway further explored using situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) gas chromatography–mass spectrometry (GC-MS). These findings provide important insights into irradiation-mediated regulation removal PAEs environments.

Language: Английский

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High efficiency removal OBS using a novel Fe-Co co-modified biochar activated peroxymonosulfate: Synergistic effects of Fe and Co

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 162914 - 162914

Published: March 1, 2025

Language: Английский

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Boosting catalytic activity of Fe-based perovskite by compositing with Co oxyhydroxide for peroxymonosulfate activation and ofloxacin degradation

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2024, Volume and Issue: 705, P. 135706 - 135706

Published: Nov. 6, 2024

Language: Английский

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Dodecyl glycoside intercalated organo-montmorillonite as the excipient for the development of alginate/organo-montmorillonite composite hydrogel beads based oral formulations for hydrophobic drug delivery

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2025, Volume and Issue: 709, P. 136154 - 136154

Published: Jan. 8, 2025

Language: Английский

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Fabrication of Z-Scheme MIL-125/Ag/BiOBr Heterojunctions with Enhanced Photocatalytic Reduction of Cr⁶⁺

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 22, 2025

Herein, first, MIL-125 samples were synthesized via a hydrothermal method. Then, Ag species doping on the surface of photolysis silver nitrate. Finally, Z-scheme MIL-125/Ag/BiOBr composite was directed liquid assembly The structure, morphology, and optical properties prepared investigated X-ray diffraction, scanning electron microscopy, high-resolution transmission energy-dispersive spectroscopic mapping, Fourier transform infrared spectroscopy, photoelectron N2 adsorption–desorption analysis, ultraviolet–visible photoluminescence photovoltage transient photocurrent response electrochemical impedance spin resonance analysis. Photocatalytic experiments indicated that photocatalytic Cr6+ reduction efficiency heterojunctions 85.7% at pH = 6, which approximately 5.5 2.2 times higher than using BiOBr alone, respectively. This performance attributed to intimate interfacial contact between species, increased transfer separation photogenerated carriers inhibited recombination electrons holes. Furthermore, possible mechanism photocatalyst proposed.

Language: Английский

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LaFeO3 anchoring on ZIF-67 for the activation of peroxymonosulfate toward ofloxacin degradation: Radical and non-radical reaction pathways

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 131846 - 131846

Published: Jan. 1, 2025

Language: Английский

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