Insights into Operating Conditions on Electrocatalytic CO₂ Reduction

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

Published: Feb. 5, 2025

Abstract Electrocatalytic CO 2 reduction (CO RR) is rapidly emerging as a promising sustainable strategy for transforming into valuable fuels and chemical feedstocks, crucial step toward carbon‐neutral society. The efficiency, selectivity, stability of RR are heavily influenced by the chosen catalyst operating conditions used. Despite substantial advances in development catalysts, there scarcity comprehensive reviews focusing on influence different environments performance. This review offers detailed examination internal external environmental control strategies designed to enhance efficiency. fundamental reaction mechanisms through situ operational techniques, paired with theoretical analyses, discussed while also identifying key challenges future research directions technology. By delivering overview current state field, this highlights critical role control, mechanistic insights, practical considerations needed successful commercialization

Language: Английский

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Molecular Nanojunction Catalyst for Oxygen Evolution Reaction

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

Published: Jan. 26, 2025

Abstract Achieving close integration and strong electronic communication between molecular catalysts conductive substrates is crucial for developing the stability catalytic activity of nanomaterials. However, constructing heterostructure catalyst usually need complex demanding synthesis processes. Herein, a facile universal “molecular nanojunction” strategy developed to prepare with high by improving coplanarity nanojunction facilitating efficient electron transfer. The density function theory (DFT) calculations in situ characterization indicate that reduces excessive * OH adsorption accelerates deprotonation process, thereby promoting oxygen generation. shows better evolution reaction (OER) performance than most reported catalysts. What's more, are applied alkaline anion exchange membrane (AEM) electrolysis cells, exhibiting excellent performance.

Language: Английский

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Mechanistic insights into the impact of bromide ion adsorption and surface bromination on Cu2O for enhanced selectivity and activity in electrochemical CO2 reduction

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137492 - 137492

Published: March 1, 2025

Language: Английский

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Self-supporting nickel single atom catalyst derived from nickel metal organic framework for efficient electrocatalysis of CO2

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 178780 - 178780

Published: Jan. 1, 2025

Language: Английский

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Axial coordination engineering of cobalt phthalocyanine enables efficient CO2 electrolysis to CO

Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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Phase Transformation and Electrocatalytic CO₂ Reduction in Ternary Au–Ag–Cu System

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

Published: April 16, 2025

Abstract This study presents a two‐step wet‐chemistry method for synthesizing AuAgCu x nanoparticles (NPs) using AuAg NP seeds. In‐depth research investigates how composition and temperature interact to drive phase transformations, linking composition, structure, catalytic function. These findings reveal that the alloying process exhibits unique composition‐dependent behavior under heat treatment, resulting in transformation sequence progresses from ternary alloy binary alloy, ultimately an ordered structure as varies. In this process, silver tends migrate away stable diffusing outward surface, while copper diffuses inward, forming AuCu alloy. CO 2 reduction experiments demonstrate Faradaic efficiency of (FE ) can be finely tuned throughout entire system. Additionally, these results highlight crucial roles density grain boundaries (GB) enhancing overall activity. work not only sheds light on complex interactions within systems but also provides valuable insights designing more efficient electrochemical catalysts reduction.

Language: Английский

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Heterogeneous Electrocatalytic CO₂ Reduction by Supported Molecular Catalysts Well Dispersed on Electrode Surface

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

Published: April 22, 2025

Electrochemical CO 2 reduction (CO R) to value‐added products using renewable electricity offers a promising approach toward achieving carbon neutrality. Among various electrocatalysts, molecular catalysts, particularly transition metal complexes, stand out due the high selectivity for single specific and desirable tunability, enabling rational optimization of catalytic performance. However, their practical application is hindered by low operating current densities challenges in catalyst recycling. To address these limitations, immobilizing catalysts on electrode surfaces has emerged as an effective strategy integrating selective into heterogeneous catalysis. This mini review focuses distinct category heterogenized catalysts—those molecularly dispersed supported substrates or surfaces‐which exhibit remarkable activity at single‐molecule level ability drive deep (beyond two electrons) under certain conditions. Recent progress this field comprehensively discussed, emphasizing critical impacts molecule‐level dispersion catalyst‐support interactions electronic properties, multi‐electron transfer kinetics, overall Moreover, overview potential applications beyond electrochemical R provided end. aims offer valuable insights future design efficient scalable electrocatalysts sustainable conversion.

Language: Английский

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Electronic tuning of defect-rich ultrathin nitrogen-doped porous carbon nanosheets supported metal phthalocyanine catalysts for CO2 electroreduction

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137881 - 137881

Published: May 1, 2025

Language: Английский

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Promoting the Cobalt Phthalocyanine-Catalyzed Electrochemical Reduction of Carbon Dioxide with the Coadsorption of Melamine

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 28, 2025

Electrochemical reduction of carbon dioxide (CO2RR) is a promising strategy for mitigating global warming and producing value-added products simultaneously. Molecular catalysts, such as cobalt phthalocyanine (CoPc), are known to be effective in converting (CO2) monoxide (CO). However, it still challenging improve the reaction rate selectivity this conversion. Herein, we report simple coadsorption promote CoPc-catalyzed CO2RR CO by coadsorbing melamine molecules together with CoPc onto surface nanotubes (CNTs). The led an increase output current density 2.6-fold at overpotential -1.23 V vs Ag|AgCl. Moreover, Faraday efficiency (FE) toward increased 92% H-type cell, contrast FE 85% absence coadsorption. further improved 99% flow cell system. It was revealed that could modulate adsorption *CO intermediates decrease energy barrier CO2 CO. More importantly, only solution-based process employed whole procedure no organic synthesis involved, making our method highly simple, convenient, environment friendly. This work paves way modulating activity molecular catalysts CO2RR.

Language: Английский

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High-throughput Screening of Mechanically Interlocked Catenane Metal Complexes for Enhanced Electrocatalytic Activity

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(48), P. 33948 - 33957

Published: Jan. 1, 2024

Metal complexes have been thoroughly studied for various electrochemical reactions.

Language: Английский

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