Embedding cobalt nanoparticles into atomically dispersed cobalt-nitrogen-biochar to promote high-valent cobalt-oxo generation in peracetic acid activation for organics oxidation and mechanism

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160954 - 160954

Published: Feb. 1, 2025

Language: Английский

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Single‐Atom Co Meets Remote Fe for a Synergistic Boost in Oxygen Electrocatalysis

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 16, 2025

Abstract The oxygen electrocatalytic activity of transition metal catalysts can be tuned by tailoring their microstructure to optimize electronic configuration. Here, a one‐step Coordination‐Selective Synthesis strategy is developed integrate Co single‐atom sites and Fe‐based nanoparticles within the same matrix, enabling long‐range interactions that enhance Co‐N 4 reactivity improve reduction reaction performance. X‐ray absorption spectroscopy confirmed remote modulate electron distribution at sites. Structural characterizations reveal optimal catalyst, 50% Fe ‐NC, contains metallic Fe, 3 O , N species. Electrochemical measurements show it achieves onset half‐wave potentials 0.984 0.927 V versus RHE, surpassing 100% ‐NC with only Additionally, demonstrates efficient evolution performance, achieving an overpotential 298 mV 20 mA cm −2 comparable RuO 2 . Density functional theory calculations optimizes O‐containing intermediate adsorption/desorption, lowering theoretical overpotential. Zn‐air batteries assembled exhibited superior performance Pt/C, highlighting its potential for bifunctional electrocatalysis. This study provides approach designing high‐performance utilizing synergistic between atomic nanoscale

Language: Английский

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Enhanced PFOA degradation via non-radical PMS pathway through synergistic Fe single-atoms and Fe nanoparticles in Fe–N–C catalysts

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162424 - 162424

Published: April 1, 2025

Language: Английский

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Selective Introduction of Pentagon Defects into Co‐N₄ Sites for Boosting Fenton‐Like Activity

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 14, 2025

Abstract Carbon‐supported single‐atom catalysts (CS‐SACs) have attracted tremendous attention in environmental remediation fields, however, the role of ubiquitously existing carbon defects on support regulating electronic structure active metal sites has long been overlooked. Herein, a selective pyridinic N etching strategy is proposed to controllably fabricate specific pentagon supports anchored with Co‐N 4 sites. Theoretical and experimental results reveal that can induce upward shifting Co d‐band center increase electron density dxz dz 2 orbitals, indicating its indispensable center. As result, efficient transfer realized between atom peroxymonsulfate (PMS). Moreover, energy barriers for crucial oxygen intermediate are reduced, which facilitates generation singlet ( 1 O ). Consequently, catalyst (C5‐Co‐N ) achieved remarkable TOF value (9.37 min −1 Fenton‐like reaction, surpassing state‐of‐the‐art reported so far. This work not only provides CS‐SACs but also deepens fundamental understanding how regulate catalytic performance metal‐N

Language: Английский

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Near-infrared photothermal catalysis for biomass upgrading

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137539 - 137539

Published: April 1, 2025

Language: Английский

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Optimized the e Occupancy of Co Active Site through 4f–2p–3d Gradient Orbital Coupling for Efficient Fenton-like Catalysis

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125420 - 125420

Published: April 1, 2025

Language: Английский

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Coordination engineering of iron single atoms with oxygen substitution steers nonradical pathway transition for sustainable water decontamination

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 163216 - 163216

Published: April 1, 2025

Language: Английский

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Sustainable Water Decontamination: Advanced High‐Valent Iron Active Species‐Driven Peroxymonosulfate Activation for Global Challenges

CleanMat., Journal Year: 2025, Volume and Issue: unknown

Published: May 4, 2025

ABSTRACT High‐valent iron active species (HVIAS)‐driven peroxymonosulfate (PMS) activation has emerged as a transformative approach in environmental remediation. This review systematically deciphers the mechanistic evolution and characterization advances of HVIAS generation: non‐radical‐dominated electron transfer pathways have been rigorously elucidated through situ X‐ray absorption spectroscopy (XAS) Mössbauer spectroscopy. In contaminant elimination, HVIAS‐PMS system achieves 1‐2 orders magnitude higher degradation kinetics than conventional radical‐based routes via targeted oxidation electron‐rich moieties antibiotics. To address real‐world wastewater complexity, 3D‐structured 3D‐printed catalytic materials enhance generation efficiency stability confinement effects mass transport optimization. Nevertheless, critical challenges—including C‐F bond cleavage PFAS, co‐existing matrix interference, byproduct toxicity—demand urgent re‐evaluation for practical implementation. Future endeavors should prioritize smart‐responsive catalyst design, multi‐omics‐driven toxicity profiling, global database establishment, cross‐scale integration with renewable energy technologies. perspective presents cutting‐edge advancements systems, provides multidimensional framework bridging fundamental research applications sustainable water decontamination, discusses limitations well prospects.

Language: Английский

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Single-atom materials boosting wearable orthogonal uric acid detection

Med-X, Journal Year: 2024, Volume and Issue: 2(1)

Published: Sept. 20, 2024

Language: Английский

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Achieving cycling catalysis of electro-Fenton treatment

Nature Water, Journal Year: 2024, Volume and Issue: 2(8), P. 702 - 703

Published: Aug. 16, 2024

Language: Английский

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