MXene-Regulated Indium-Based Metal–Organic Framework Material for Electrochemical Reduction of CO₂ into Pure Formic Acid Aqueous Solution

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 12, 2025

Electrochemical CO2 reduction reaction provides a mild avenue for resource utilization of CO2. Metal-organic framework (MOF) materials are considered among the promising catalysts due to unique structural advantages. However, catalytic performance MOFs is hindered by poor conductivity, making it crucial enhance charge transfer improved efficiency. Herein, hybrid catalyst was constructed based on In-based porphyrin (In-TCPP) and conducting MXene nanosheets efficient conversion. As expected, as conductive support significantly improves material, achieving Faraday efficiency HCOO- 94.0% with 2.2-fold increase in practical current density. Furthermore, pure formic acid solution concentration ca. 0.22 M prepared via execution solid-state electrolyte-mediated MEA (MEA-SSE) device. Theoretical calculations situ ATR-FTIR spectra reveal that introduction not only endows material metallic properties facilitate but also modulates electronic structure optimize adsorption key intermediate *OCHO. This work enlightens rational design MOF-based electrocatalysts regulation demonstrates promise MEA-SSE device applications.

Language: Английский

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Efficient capture, catalytic reduction, and energy utilization of CO2 via Mg0.50Mn1.75Fe0.75O4 nanoparticles

Journal of CO2 Utilization, Journal Year: 2025, Volume and Issue: 95, P. 103089 - 103089

Published: April 18, 2025

Language: Английский

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Constructing a Localized Buffer Interlayer to Elevate High-Rate CO₂-to-C₂₊ Electrosynthesis

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: May 13, 2025

Catalytic surface and interface engineering for the electrosynthesis of multicarbon chemicals from CO2 are widely investigated, while selective regulation mass transport reactant intermediate CO remains rarely explored, which is a critical challenge limiting C2+ production rate. Here, we strategically construct buffer interlayer with soluble ionic liquid (IL) additives between aqueous electrolyte catalytic surface, not only regulates microenvironment at different reaction stages but also stabilizes sites. The residence time extended in ascribed to attractive interactions via dipole-dipole hydrogen bonding. its enhanced by reactions within flow-through compact cell. Meanwhile, utilization ILs active sites (Cu2O-derived Cu) facilitating regeneration Cu2O through applied potentials. Consequently, products synthesized high rate partial current density 1.30 A/cm2 over 200 h. This concept further scaled 100 cm2 flow cell, exhibiting carbon loss below 6%. Such systematic investigation establishes general construction strategy electrolysis.

Language: Английский

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Challenges in Product Selectivity for Electrocatalytic Reduction of Amine-Captured CO₂: Implications for Reactive Carbon Capture

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: May 19, 2025

Language: Английский

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