Direct cathodic polarization preparation of ambient CO2-derived oxygen-functionalized carbons for electro-production of H2O2

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125109 - 125109

Published: Jan. 1, 2025

Language: Английский

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A review of two electrons oxygen reduction reaction fundamentals to produce hydrogen peroxide over various cobalt-based electrocatalysts

Materials Research Innovations, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 13

Published: Feb. 26, 2025

Language: Английский

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Formation of Flower-Like Self-Assemble Structure by Reaction between Graphene Quantum Dots and Melamine Molecule: Efficient for Electrocatalytic Properties

Russian Journal of General Chemistry, Journal Year: 2025, Volume and Issue: 95(1), P. 133 - 140

Published: Jan. 1, 2025

Language: Английский

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Metal Nitride Catalysts for Photoelectrochemical and Electrochemical Catalysis

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

Published: March 2, 2025

ABSTRACT Metal nitrides have emerged as promising materials for photoelectrochemical and electrochemical catalysis due to their unique electronic properties structural versatility, offering high electrical conductivity abundant active sites catalytic reactions. Herein, we comprehensively explore the characteristics, synthesis, application of diverse metal nitride catalysts. Fundamental features advantages are presented in terms structure surface chemistry. We deal with synthetic principles parameters catalysts nitrogen source, introducing synthesis strategies various morphologies phases. Recent progress (photo)electrochemical reactions, such hydrogen evolution, oxygen reduction, carbon dioxide biomass valorization is discussed tailored roles. By providing future direction remaining challenges, this review aims guide design from a point view, contributing expanding into energy environmental technologies.

Language: Английский

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Self-supported cathode based microbial electro-Fenton for water disinfection: The synergistic inactivation mechanism of biological and electrochemical oxidation

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132544 - 132544

Published: March 1, 2025

Language: Английский

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Pt-based electrocatalysts design for oxygen reduction toward hydrogen peroxide

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1005, P. 176091 - 176091

Published: Aug. 22, 2024

Language: Английский

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Janus structural TaO/TaN heterojunction as efficient oxygen reduction electrocatalyst for H2O2 production

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(99), P. 14786 - 14789

Published: Jan. 1, 2024

A novel electrocatalyst composed of a Janus structured TaO/TaN heterojunction with graphene exhibits superior 2e − ORR activity, selectivity and durability in alkaline electrolytes, surpassing the comparative TaON@Gr.

Language: Английский

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Competitive Strain Modulation of Oxygen Reduction Reaction in Monolayer Binary Alloy Surfaces

Published: Aug. 28, 2024

Binary alloys of transition metals are promising catalytic materials for the cathodic oxygen-reduction reaction (ORR) polymer-electrolyte-membrane fuel cells (PEMFCs). However, a lack understanding factors that affect ORR's performance hampers applications binary alloys. To obtain further knowledge efficient ORR, we investigate activity monolayer AuxPt1-x alloy surfaces supported on Pt(111), considering from random distribution until phase-segregated surface atoms. Using *OH adsorption energy as descriptor, found depends atoms within with segregated Pt and Au domains showing higher activity. The increases fraction n near site decreases p outside heptamer. increase due to is related tensile strain, while decrease long-range strain effect Pt-Pt Pt-Au bonds, improving available sites. Due weak sites, an overall percentage considerably above starts reduce because reduction number very active

Language: Английский

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The steric hindrance effect of Co porphyrins promoting two-electron oxygen reduction reaction selectivity

Chemical Communications, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 19, 2024

A new Co porphyrin with eight ester groups in ortho and ′ positions of phenyl was designed, which displayed improved 2e oxygen reduction reaction (ORR) selectivity compared a without large steric groups.

Language: Английский

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Phase Reconstruction‐Directed Synthesis of Oxalate‐Functionalized Nickel Hydroxide Electrocatalyst for High‐Yield H₂O₂ Generation at Industrial Currents

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 22, 2024

Abstract The electrochemical oxygen reduction reaction (2e − ORR) offers a promising approach for H 2 O production, yet developing highly active, selective, and stable electrocatalysts remains challenge. In this work, phase reconstruction strategy is presented to synthesize an oxalate‐adsorbed nickel hydroxide electrocatalyst (Ni(OH) ‐C 4 ) through the self‐dissociation of oxalate in alkaline medium, leading notable enhancement yield at elevated current densities. Remarkably, Ni(OH) exhibits 2e selectivity exceeding 93% across broad voltage range (0.0 0.5 V vs RHE) 0.1 M KOH, outperforming pristine . When deployed as gas diffusion electrode flow cell, catalyst demonstrates operation 50 h 200 mA cm −2 , with Faradaic efficiency surpassing 90% peak 6.2 mol g −1 cat Comprehensive advanced characterizations, including situ Raman spectroscopy, transient photovoltage spectra, potential scanning coupled post‐ORR analyses, reveal that surface‐adsorbed groups on enhance interfacial kinetics between active Ni sites reactants by inducing charge trapping effect forming hydrogen‐bonded network, facilitating robust high‐yield production.

Language: Английский

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