Membrane-based nanoconfined heterogeneous catalysis for water purification: A critical review✰

Water Research, Journal Year: 2023, Volume and Issue: 230, P. 119577 - 119577

Published: Jan. 5, 2023

Language: Английский

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Constructing Hollow Multishelled Microreactors with a Nanoconfined Microenvironment for Ofloxacin Degradation through Peroxymonosulfate Activation: Evolution of High-Valence Cobalt-Oxo Species

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(42), P. 16141 - 16151

Published: Sept. 11, 2023

This study constructed hollow multishelled microreactors with a nanoconfined microenvironment for degrading ofloxacin (OFX) through peroxymonosulfate (PMS) activation in Fenton-like advanced oxidation processes (AOPs), resulting adequate contaminant mineralization. Among the microreactors, triple-shelled Co-based microsphere (TS-Co/HM) exhibited optimal performance; its OFX degradation rate was 0.598 min-1, which higher than that of Co3O4 nanoparticles by 8.97-fold. The structural tuning Co/HM promoted formation oxygen vacancies (VO), then facilitated evolution high-valence cobalt-oxo (Co(IV)═O) and shifted entire t2g orbital Co atom upward, promoting catalytic reactions. Co(IV)═O identified using phenylmethyl sulfoxide (PMSO) probe situ Raman spectroscopy, theoretical calculations were conducted to identify lower energy barrier on defect-rich catalyst. Furthermore, TS-Co/HM catalyst remarkable stability inorganic (Cl-, H2PO4-, NO3-), organic (humic acid), real water samples (tap water, river hospital water), continuous flow system microreactor. could enrich reactants cavities, prolong residence time molecules, increase utilization efficiency Co(IV)═O. work describes an process involving contaminants elimination. Our results may encourage use structures inform design catalysts AOPs.

Language: Английский

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Carbon nitride based nanoarchitectonics for nature-inspired photocatalytic CO2 reduction

Progress in Materials Science, Journal Year: 2024, Volume and Issue: 142, P. 101242 - 101242

Published: Jan. 21, 2024

Drawing inspiration from the natural process of photosynthesis found in plant leaves, scientists are exploring use photocatalysis to convert carbon dioxide (CO2) into valuable products using solar light and water. Photocatalytic CO2 conversion has emerged as one efficient green approaches revitalize environment greenhouse gas pollution. Owing its visible-range band gap, non-toxicity, ease synthesis at economic costs stability under irradiation, g-C3N4 most explored photocatalyst. However, due rampant exciton recombination owing poor electrical conductivity, efficiency reduction falls short for pure/pristine form. Therefore, structural manoeuvre materials N-rich configurations, heteroatom/single-atom doping hybridization with various functional including metal oxides/sulfides, perovskite halides complexes been adopted, thereby overcoming their inherent drawbacks photocatalytic reduction. In this timely review, we present an overview recent advances surface/interface engineering nitrides fuels useful chemical by-products. More importance is given critical evaluation surface manipulation how it amplifies affects properties Finally, provide a comprehensive outlook future directions these functionalised applications. We strongly believe that unique review will offer new knowledge on property relationship nitride-based impact enhancing performance reactions further create opportunities them areas.

Language: Английский

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Overcoming the permeability-selectivity challenge in water purification using two-dimensional cobalt-functionalized vermiculite membrane

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Jan. 9, 2024

Abstract Clean water and sanitation are major global challenges highlighted by the UN Sustainable Development Goals. Water treatment using energy-efficient membrane technologies is one of most promising solutions. Despite decades research, permeability-selectivity trade-off remains challenge for synthetic membranes. To overcome this challenge, here we develop a two-dimensional cobalt-functionalized vermiculite (Co@VMT), which innovatively combines properties filtration nanoconfinement catalysis. The Co@VMT demonstrates high permeance 122.4 L·m −2 ·h −1 ·bar , two orders magnitude higher than that VMT (1.1 ). Moreover, applied as nanofluidic advanced oxidation process platform to activate peroxymonosulfate (PMS) degradation several organic pollutants (dyes, pharmaceuticals, phenols) shows excellent performance (~100%) stability (for over 107 h) even in real-world matrices. Importantly, safe non-toxic effluent quality ensured membrane/PMS system without brine, totally different from molecular sieving-based with concentrated remaining brine. This work can serve generic design blueprint development diverse catalytic membranes persistent issue purification.

Language: Английский

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Nanoconfined catalytic water purification within CoFeCu LDH-assembled membrane nanochannels

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 357, P. 124290 - 124290

Published: June 11, 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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CoFe-prussian blue analogues@MXenes membrane activated peroxymonosulfate through enhanced electron transfer for nanoconfined catalytic degradation of bisphenol A: The crucial role of 1O2

Journal of Membrane Science, Journal Year: 2025, Volume and Issue: unknown, P. 123738 - 123738

Published: Jan. 1, 2025

Language: Английский

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CoM (M = Mn, Fe, and Cu) LDH-assembled nanoconfined catalytic membranes for efficient micropollutant removal: Performance and atomic-scale mechanism insights

Journal of Membrane Science, Journal Year: 2025, Volume and Issue: unknown, P. 123846 - 123846

Published: Feb. 1, 2025

Language: Английский

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Heterogeneous Peroxymonosulfate-Based Advanced Oxidation Mechanisms: New Wine in Old Bottles?

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

Heterogeneous persulfate-based advanced oxidation processes (PS-AOPs) have been gaining significant attention in water/wastewater treatment; however, the elucidation of mechanisms PS-AOPs has become increasingly complex as understanding potential reactive pathways expands and rigor corresponding characterizations intensifies. As such, accurately illustrating system with a robust convincing methodology is crucial, while influence substrates must not be overlooked. In this Perspective, established techniques critical issues are systematically compiled to serve practical guidelines. Additionally, newly proposed pathway, direct transfer process (DOTP), discussed comparison conventional mineralization by oxidative species (ROS) PS-AOPs. Overall, investigation PS-AOP across various heterogeneous systems remains contentious calls for standardization, which work aims valuable reference.

Language: Английский

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Assembling CoAl-layered metal oxide into the gravity-driven catalytic membrane for Fenton-like catalytic degradation of pharmaceuticals and personal care products

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 463, P. 142340 - 142340

Published: March 9, 2023

Language: Английский

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