Catalyzing oxygen reduction by morphologically engineered ZIF-derived carbon composite catalysts in dual-chamber microbial fuel cells

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(2), P. 112242 - 112242

Published: Feb. 17, 2024

Language: Английский

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Continuous peroxymonosufate activation for antibiotics degradation via fluorine-free-Ti3C2Tx-CoFe2O4 hydrogel beads: performance, mechanism and application

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 358, P. 124441 - 124441

Published: July 25, 2024

Language: Английский

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Doping and defects in carbon nitride cause efficient in situ H2O2 synthesis to allow efficient photocatalytic sterilization

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 926, P. 172109 - 172109

Published: March 30, 2024

Language: Английский

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Insight into synergy for oxygen reduction electrocatalysis of iron-nitrogen-carbon

Chem, Journal Year: 2024, Volume and Issue: 10(7), P. 1994 - 2030

Published: July 1, 2024

Language: Английский

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Selective oxidation of emerging organic contaminants in heterogeneous Fenton-like systems

Nano Research, Journal Year: 2024, Volume and Issue: 17(11), P. 9300 - 9325

Published: Aug. 5, 2024

Language: Английский

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Defective-Engineered ZnO Encapsulated in N-Doped Carbon for Sustainable 2e^– ORR: Interfacial Zn–N Bond Regulated Oxygen Reduction Pathways

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(17), P. 12917 - 12927

Published: Aug. 13, 2024

Zinc oxide (ZnO), although known for its stability and safety, has shown limited catalytic activity in the two-electron oxygen reduction reaction (2e– ORR). In this context, we synthesized a robust defective-engineered ZnO/N-doped graphene heterojunction (ZnO-NG) featuring abundant Zn–N bonds at interface. The engineered composite exhibited remarkable H2O2 yield of 13.1 mg h–1 cm–2 25 mA with selectivity 85.0%, surpassing NG ZnO counterparts. Furthermore, exceptional long-term ZnO-NG was validated through chronoamperometric measurements 10 successive runs, highlighting great potential large-scale synthesis. Density functional theory calculations X-ray absorption near-edge structure analysis revealed that interfacial bridging N regulated local electron distribution, transferring unpaired electrons from Zn sites to adjacent N/C atoms. configuration facilitated hydrogenation step O2-to-OOH* more importantly inhibited O*-to–OH* conversion, thereby improving 2e– ORR toward water remediation.

Language: Английский

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Challenges and Prospects of Catalyst Design and Environmental Applications for On‐Site Hydrogen Peroxide Production via Diverse (Photo)Electrochemical Reaction Pathways

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

Published: Feb. 9, 2025

Hydrogen peroxide (H2O2) is an environmentally friendly and efficient oxidant with diverse applications in the chemical industry, medicine, energy, environmental protection. While anthraquinone oxidation process has traditionally dominated industrial H2O2 production, its complexity high pollution levels present significant challenges. In response, alternative methods such as electrochemical, photochemical, photoelectrochemical pathways have emerged, providing greener more sustainable solutions. These innovative approaches leverage only water, oxygen, solar or electrical positioning them viable substitutes for energy-intensive process. This review delves into latest advancements production through twoelectron oxygen reduction reaction (2e-ORR), water (2e-WOR), synergistic two-channel pathway (2e-ORR + 2e-WOR) (photo)electrochemical systems, focusing on pathways. It discusses underlying mechanisms, evaluation parameters, design of high-performance catalysts on-site applications. Recent developments advanced (photo)electrocatalysts over past five years are highlighted, including key strategies that enhance catalytic performance. The also addresses future challenges prospects catalyst practical systems serving a valuable reference researchers field.

Language: Английский

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Efficient degradation of tetracycline contaminants by a flow-through Electro-Fenton system: Carbon nanotube-encapsulated α-Fe2O3 under nanoconfinement

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160449 - 160449

Published: Feb. 1, 2025

Language: Английский

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Highly active ZIF-8@CNT composite catalysts as cathode materials for anion exchange membrane fuel cells

Industrial Chemistry and Materials, Journal Year: 2023, Volume and Issue: 1(4), P. 526 - 541

Published: Jan. 1, 2023

This study investigates the oxygen reduction reaction activity of transition-metal-doped ZIF-8 and carbon-nanotube-based composite catalysts in alkaline media their performance anion-exchange membrane fuel cells using an Aemion+® 15 μm AEM.

Language: Английский

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Rational Design of Oxygen Species Adsorption on Nonnoble Metal Catalysts for Two‐Electron Oxygen Reduction

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 14(1)

Published: Nov. 15, 2023

Abstract Molecular oxygen can be electrochemically reduced to water via the 4e − transfer pathway or hydrogen peroxide a 2e pathway, which holds significant relevance within energy conversion and chemical synthesis. The specific reduction reaction (ORR) pathways intricately hinge upon adsorption configuration state of species. Precisely steering species at active sites serves as crucial guiding principle for design preparation ORR catalysts. This review succinctly summarizes strategies employed regulate on nonnoble metal catalyst surfaces, encompassing insights into mechanism regulation intermediates, with particular focus produce H 2 O . Moreover, persistent challenges that remain in realm non‐noble catalysts are pointed out prospects their future development meticulously evaluated.

Language: Английский

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