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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Electron transfer-mediated enhancement of superoxide radical generation in fenton-like process: Key role of oxygen vacancy-regulated local electron density of cobalt sites

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 343, P. 123490 - 123490

Published: Nov. 10, 2023

Language: Английский

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Recent advances of modification effect in Co3O4-based catalyst towards highly efficient photocatalysis

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 650, P. 1550 - 1590

Published: July 20, 2023

Language: Английский

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Insight into the extremely different catalytic behaviors of asymmetric and symmetric oxygen vacancies for peroxymonosulfate activation

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 346, P. 123753 - 123753

Published: Jan. 21, 2024

Language: Английский

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Web system-assisted ratiometric fluorescent probe embedded with machine learning for intelligent detection of pefloxacin

Sensors and Actuators B Chemical, Journal Year: 2024, Volume and Issue: 407, P. 135491 - 135491

Published: Feb. 12, 2024

Language: Английский

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Antibiotic removal from synthetic and real aqueous matrices by peroxymonosulfate-based advanced oxidation processes. A review of recent development

Chemosphere, Journal Year: 2024, Volume and Issue: 351, P. 141153 - 141153

Published: Jan. 12, 2024

Language: Английский

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Fenton-like membrane reactor assembled by electron polarization and defect engineering modifying Co3O4 spinel for flow-through removal of organic contaminants

Water Research, Journal Year: 2024, Volume and Issue: 254, P. 121351 - 121351

Published: Feb. 21, 2024

Language: Английский

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Synthesis of MoS2@MoO3/(Cu+/g-C3N4) ternary composites with double S-scheme heterojunction for peroxymonosulfate activation exposing to visible light

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 678, P. 639 - 656

Published: Sept. 11, 2024

Language: Английский

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Two luminescent d10 metal coordination polymers for selective and sensitive detection of Hg2+ ions and pefloxacin in aqueous solution

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1309, P. 138150 - 138150

Published: March 28, 2024

Language: Английский

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Activation of persulfate, peroxymonosulfate, and peroxydisulfate using metal-organic framework catalysts for degradation of antibiotics: Identification, quantification, interconversion, and transformation of reactive species

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(3), P. 112838 - 112838

Published: April 21, 2024

Language: Английский

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