Catalysis Enhancement of Co₃O₄ through the Epitaxial Growth of Inert ZnO in Peroxymonosulfate Activation: The Catalytic Mechanism of Surface Hydroxyls in Singlet Oxygen Generation

Crystal Growth & Design, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 16, 2024

As a prevalent Co-contained catalyst, modified Co3O4 has been widely utilized to activate peroxymonosulfate (PMS) for organic wastewater treatment due its affordability and accessibility. While the catalysis enhancement of by catalytic inert species is often attributed formation oxygen vacancies (OVs), underlying mechanism beyond OVs remains unclear. Herein, we designed one-pot pyrolysis process synthesize ZnO/Co3O4 heterojunctions featuring Zn–Co tetrahedral coordination on their interface. In PMS-advanced oxidation methylene blue (MB), epitaxial growth ZnO surface led an 88-fold increase in activity, facilitating rapid degradation dyes achieve deep mineralization effluent. Co sites hydroxyls played crucial role PMS activation, generating variety reactive species. Among these species, singlet (1O2) was identified as dominant responsible MB degradation, with assistance sulfate radical. Theoretical calculations demonstrated that Zn–OH group easier than Co–OH through polarization during chemisorption. The activated groups served novel active sites, participating activation nonradical way generate partial 1O2. This study sheds new light effect (ZnO) enhancing activity Co3O4, refining our understanding generation route 1O2 activation.

Language: Английский

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Overcoming metals redox rate limitations in spinel oxide-driven Fenton-like reactions via synergistic heteroatom doping and carbon anchoring for efficient micropollutant removal

Water Research, Journal Year: 2024, Volume and Issue: 261, P. 122020 - 122020

Published: June 29, 2024

Language: Английский

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Ball-milled pyrite@biochar induced percarbonate activation for sustainable degradation of antibiotic norfloxacin at inherent pH environment

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 335, P. 126202 - 126202

Published: Jan. 4, 2024

Language: Английский

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Gambling of homogeneous and heterogeneous Fenton in wastewater treatment

Cell Reports Physical Science, Journal Year: 2024, Volume and Issue: 5(5), P. 101966 - 101966

Published: May 1, 2024

Employing Fenton technology for efficiently removing pollutants in water stands as a significant method. Within the domain of traditional techniques, there exist both homogeneous and heterogeneous systems. Homogeneous systems tackle iron sludge concerns through incorporation co-catalysts, whereas adeptly manipulate surface microenvironments adjust active sites, enabling pollutant degradation across wide range pH. Each system boasts distinct advantages limitations. This perspective critically examines existing challenges associated solutions reactions comprehensive analysis typical case studies. The focus is on evaluating industrial potential these systems, forecasting future developmental trends, fostering more robust sustainable advancement within context carbon peaking neutrality goals.

Language: Английский

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Breaking through the oxygen hindrance effect in Fenton-like reactions to promote the generation of high-valent iron-oxo species within Fe-NxB/GCN single-atom catalysts

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125280 - 125280

Published: March 1, 2025

Language: Английский

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Iron Single-Atom Catalyst Actuates PMS/O₃ Activation Process: Nonradical Generation Path for Synergistic Multiperoxides

ACS Applied Engineering Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Singlet oxygen (1O2) is an excellent reactive species in advanced oxidation processes for water purification due to its environmental suitability and selectivity. However, generation conversion mechanisms remain unclear. Herein, we have constructed a high-yield system 1O2 by introducing ozone (O3) into iron single-atom catalyst/peroxymonosulfate (PMS) system. The steady-state concentration of the was increased 53.2% at O3 below 0.5 mg/L. formation from high-valent iron-oxo (FeIV═O) revealed electron paramagnetic resonance analysis, where FeIV═O found probe experiment via activation PMS on sites. developed situ singlet fluorescence imaging technique observed that addition has promoted process 1O2. Density functional theory calculations further demonstrated low energy barrier key intermediate OO* this process. These findings help understand mechanism production molecular level guide design efficient reaction systems purification.

Language: Английский

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Regulating the Electronic Structure of Cu Single-Atom Catalysts toward Enhanced Electro-Fenton Degradation of Organic Contaminants via ¹O₂ and ^•OH

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(43), P. 19545 - 19554

Published: Oct. 19, 2024

Heterogeneous electro-Fenton degradation with

Language: Английский

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Weakly hydrophobic microenvironment-assisted membrane-based confined catalysis for efficient organoarsenic contamination removal

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 495, P. 153355 - 153355

Published: June 20, 2024

Language: Английский

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Surface Confinement Boosts the In-situ Formation of Peroxydisulfate Metastable Complexes on Assembled Hollow N-rich Carbon Plates for Water Purification

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 358, P. 124424 - 124424

Published: July 20, 2024

Language: Английский

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Triggering nanoconfinement effect in advanced oxidation processes (AOPs) for boosted degradation of organic contaminants: A review

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 503, P. 158428 - 158428

Published: Dec. 9, 2024

Language: Английский

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