Unveiling Key Descriptors of Ionomer Materials for Enhanced Electrochemical CO₂ Reduction

ACS Energy Letters, Год журнала: 2025, Номер 10(1), С. 620 - 628

Опубликована: Янв. 3, 2025

Polymeric ionomers near the catalyst surface of CO2 reduction reaction (CO2RR) electrodes affect their efficiency; however, multifaceted properties complicate structure–activity relationship elucidation. Here, we synthesized polycarbazole-based anion-exchange (QPC) bearing varying functionalized side chains to explore this relationship. Comprehensive analysis in physicochemical properties, electrochemical activity, and operando ATR-SEIRAS revealed that functional group modification significantly influenced intrinsic ionomer thereby affecting Ag microenvironments interfacial water structures, kinetics protonation step for CO2RR hydrogen evolution (HER). Notably, QPC-trimethyl phosphonium (TMP) induced favorable having a high proportion strong H-bonded with low Stark tuning slopes, which inhibit HER promote CO2RR. A CO Faradaic efficiency (>90%) was maintained using QPC-TMP membrane electrode assembly, even under concentrations (100–15%) elevated temperatures (28–72 °C). These findings suggest catalytic environment can be optimized by fine-tuning structure, contributing advancement high-performance ionomers.

Язык: Английский

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Bypassing gas-liquid mass transfer resistance in a Fenton wet scrubber for boosting the removal of hydrophobic styrene: Construction of a novel gas-solid-liquid triple-phase interface

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160166 - 160166

Опубликована: Фев. 1, 2025

Язык: Английский

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Tuning the wettability of tandem electrodes affects CO2 electro-conversion to multicarbon products

Applied Surface Science Advances, Год журнала: 2025, Номер 27, С. 100727 - 100727

Опубликована: Март 18, 2025

Язык: Английский

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Strategies for Enhancing Stability in Electrochemical CO₂ Reduction

Chemistry - An Asian Journal, Год журнала: 2025, Номер unknown

Опубликована: Апрель 9, 2025

Abstract The electrochemical CO 2 reduction reaction (CO RR) holds significant promise as a sustainable approach to address global energy challenges and reduce carbon emissions. However, achieving long‐term stability in terms of catalytic performance remains critical hurdle for large‐scale commercial deployment. This mini‐review provides comprehensive exploration the key factors influencing RR stability, encompassing catalyst design, electrode architecture, electrolyzer optimization, operational conditions. We examine how degradation occurs through mechanisms such valence changes, elemental dissolution, structural reconfiguration, active site poisoning propose targeted strategies improvement, including doping, alloying, substrate engineering. Additionally, advancements modifications membrane enhancements, are highlighted their role improving stability. Operational parameters temperature, pressure, electrolyte composition also play crucial roles extending lifespan reaction. By addressing these diverse factors, this review aims offer deeper understanding determinants RR, laying groundwork development robust, scalable technologies efficient dioxide conversion.

Язык: Английский

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Enhanced Hydrogen Evolution Performance of Magnesium-Doped Molybdenum Disulfide Nanosheets Under Acidic Conditions

Journal of environmental chemical engineering, Год журнала: 2025, Номер 13(3), С. 116866 - 116866

Опубликована: Апрель 30, 2025

Язык: Английский

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Interfacial Microenvironment Effects at Laser-Made Gold Nanoparticles Steer Carbon Dioxide Reduction Product Generation

ACS Materials Au, Год журнала: 2025, Номер unknown

Опубликована: Апрель 29, 2025

This study emphasizes the critical importance of using surfactant-free gold nanoparticles to gain mechanistic insights and improve energy efficiency carbon monoxide selectivity in aqueous dioxide reduction electrocatalysis. We utilized pulsed laser liquid synthesis prepare with a nonequilibrium cauliflower morphology, which demonstrated superior catalytic performance compared conventionally synthesized citrate-capped nanoparticles. By functionalizing nine n-alkanethiols two nitrogen-containing thiols, we investigated how chemical identity interfacial ligands their corresponding self-assembled monolayers (SAMs) influence activity nanoparticle-catalyzed CO2 reduction. approach enabled detailed understanding SAM characteristics at nanocatalyst interfaces affect key aspects electrocatalysis, including mass transport water behavior. The laser-synthesized exhibited improved across all surface modifications. Our findings highlight significance precise control over material surfaces catalyst microenvironments, is essential for optimizing processes forming foundation sustainable syngas production through tailored nanomaterial design functionalization strategies.

Язык: Английский

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Ultrathin Znohf Nanowires with Oxygen Vacancy-Rich Heterointerfaces for High Selective Co2-to-Co Electrocatalytic Conversion

Опубликована: Янв. 1, 2025

Язык: Английский

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Precipitation and Binder Effectiveness in the Electrochemical Reduction of CO2 at Cu Electrocatalysts in Zero-Gap MEA Cells

Electrochimica Acta, Год журнала: 2025, Номер unknown, С. 146559 - 146559

Опубликована: Май 1, 2025

Язык: Английский

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Comparative Study of Different Polymeric Binders in Electrochemical CO Reduction

Energy & Fuels, Год журнала: 2024, Номер 38(22), С. 22307 - 22314

Опубликована: Ноя. 5, 2024

Electrochemical reduction of carbon monoxide offers a possible route to produce valuable chemicals (such as acetate, ethanol or ethylene) from CO

Язык: Английский

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