Review on strategies for improving the added value and expanding the scope of CO₂ electroreduction products

Chemical Society Reviews, Год журнала: 2024, Номер 53(10), С. 5149 - 5189

Опубликована: Янв. 1, 2024

This review summarizes promising strategies including the design of catalysts and construction coupled electrocatalytic reaction systems, aimed at achieving selective production various products from CO 2 electroreduction.

Язык: Английский

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Silica Confinement for Stable and Magnetic Co−Cu Alloy Nanoparticles in Nitrogen‐Doped Carbon for Enhanced Hydrogen Evolution

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(24)

Опубликована: Апрель 10, 2024

Ammonia borane (AB) with 19.6 wt % H

Язык: Английский

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Hydrophobic SiO₂ Armor: Stabilizing Cu^δ+ to Enhance CO₂ Electroreduction toward C₂₊ Products in Strong Acidic Environments

ACS Nano, Год журнала: 2024, Номер 18(23), С. 15303 - 15311

Опубликована: Май 28, 2024

Electroreduction of CO2 in highly acidic environments holds promise for enhancing utilization efficiency. Due to the HER interference and structural instability, however, challenges improving selectivity stability toward multicarbon (C2+) products remain. In this study, we proposed an "armor protection" strategy involving deposition ultrathin, hydrophobic SiO2 onto Cu surface (Cu/SiO2) through a simple one-step hydrolysis. Our results confirmed effective inhibition by layer, leading high Faradaic efficiency (FE) up 76.9% C2+ at current density 900 mA cm–2 under strongly condition with pH 1. The observed performance surpassed reported most previously studied Cu-based catalysts CO2RR systems. Furthermore, ultrathin shell was demonstrated effectively prevent reconstruction preserve oxidation state Cuδ+ active sites during CO2RR. Additionally, it hindered accumulation K+ ions on catalyst diffusion situ generated OH– away from electrode, thereby favoring product generation. Raman analyses coupled DFT simulations further elucidated that proficiently modulated *CO adsorption behavior Cu/SiO2 reducing energy, facilitating C–C coupling. This work offers compelling rationally designing exploiting stable environments.

Язык: Английский

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In‐situ Reconstruction of Catalyst in Electrocatalysis

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 22, 2024

Abstract Reconstruction of catalysts is now well recognized as a common phenomenon in electrocatalysis. As the reconstructed structure may promote or hamper electrochemical performance, how to achieve designed active surface for highly enhanced catalytic activity through reconstruction needs be carefully investigated. In this review, genesis and effects various processes, such hydrogen evolution reaction (HER), oxygen (OER), carbon dioxide reduction (CO 2 RR), nitrate (NO 3 RR) are first described. Then, strategies optimizing reconstruction, valence states control, phase retention, engineering, poisoning prevention comprehensively discussed. Finally, general rules optimization summarized give perspectives future study. It believed that review shall provide deep insights into electrocatalytic mechanisms guide design pre‐catalysts with improved activity.

Язык: Английский

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Unveiling the role of heteroatom doping and strain in Core-Shell catalysts for CO2RR

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160155 - 160155

Опубликована: Фев. 1, 2025

Язык: Английский

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Synergistic Effects in the Electrochemical Carbon Dioxide Reduction Reaction for Multi‐Carbon Product Formation

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Abstract The synergistic effects in electrocatalysis can significantly enhance catalyst performance by improving catalytic activity, selectivity, and stability, optimizing reaction mechanisms electron transfer processes. This review summarizes recent advancements the of electrochemical reduction CO 2 (eCO RR) to multi‐carbon (C 2+ ) products. Starting with fundamental principles eCO RR for C product formation, paper outlines producing , 3 4 5 A comprehensive discussion is provided on critical impact structure–performance relationship production Subsequently, observed are classified various electrocatalysts different properties, including single/dual‐atom catalysts, multi‐centric single‐atom alloys, metal‐organic frameworks, heterojunction catalysts. Finally, challenges achieving selective formation through discussed, along corresponding strategies overcome obstacles.

Язык: Английский

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Recent Advances and Challenges in Efficient Selective Photocatalytic CO₂ Methanation

Small, Год журнала: 2024, Номер 20(32)

Опубликована: Март 15, 2024

Abstract Solar‐driven carbon dioxide (CO 2 ) methanation holds significant research value in the context of emission reduction and energy crisis. However, this eight‐electron catalytic reaction presents substantial challenges activity selectivity. In regard, researchers have conducted extensive exploration achieved developments. This review provides an overview recent advances efficient selective photocatalytic CO methanation. It begins by discussing fundamental principles detail, analyzing strategies for improving efficiency conversion to CH 4 comprehensively. Subsequently, it outlines applications advanced characterization methods Finally, highlights prospects opportunities area, aiming inspire into high‐value shed light on mechanisms.

Язык: Английский

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Enhancing CO₂ Electroreduction Performance through Si-Doped CuO: Stabilization of Cu⁺/Cu⁰ Sites and Improved C₂ Product Selectivity

ACS Catalysis, Год журнала: 2024, Номер 14(13), С. 10324 - 10333

Опубликована: Июнь 25, 2024

Язык: Английский

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Activating *CO by Strengthening Fe–CO π‐Backbonding to Enhance Two‐Carbon Products Formation toward CO₂ Electroreduction on Fe–N₄ Sites

Advanced Functional Materials, Год журнала: 2024, Номер 34(38)

Опубликована: Апрель 10, 2024

Abstract Many non‐precious metal‐nitrogen (M–N x )‐containing catalysts are highly efficient for electrochemical reduction of CO 2 to and yet encounter challenges in further converting more valuable two‐carbon products (C2), such as ethanol acetic acid. The ambiguous structure‐activity relationship the M–N moieties toward reaction (CO RR) results difficulties regulating RR product selectivity on ‐containing catalysts. Herein, by using fluorinated iron phthalocyanines with axial‐coordinated ligands (L–FePc–F) an 4 ‐based model electrocatalyst RR, a correlation between electronic structure C2 Fe–N is revealed comprehensive descriptor based Fe–CO π‐backbonding proposed guiding regulation higher selectivity. Based principle, Br‐axial‐coordinated FePc–F (Br–FePc–F) remarkably increases Faradic efficiency (FE) from 0% (i.e., FE FePc–F) 34% due strengthened stemming elevated 3 d xz / yz orbital energy enhanced electron‐donating ability Fe centers . This work provides strategy mechanism insights moieties, which may be inspiring precise construction specific products.

Язык: Английский

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Enhanced Local CO Coverage on Cu Quantum Dots for Boosting Electrocatalytic CO₂ Reduction to Ethylene

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 29, 2024

Abstract Ethylene (C 2 H 4 ) electrosynthesis from the electrocatalytic CO reduction process holds enormous potential applications in industrial production. However, sluggish kinetics of C─C coupling often result low yield and poor selectivity for C Herein, performance Cu catalysts varying sizes is investigated, prepared via a cryo‐mediated liquid phase exfoliation technique, electrochemical to . The activity gradually increase as size decreases tens nanometers few nanometers. Impressively, 5 nm quantum dots (Cu‐5) achieve maximum Faradaic efficiency (FE) 81.5% half‐cell cathodic energy (CEE) 42.2% with large partial current density 1.1 A cm −2 at −0.93 V versus reversible hydrogen electrode. Structural characterization situ spectroscopic analysis reveal that Cu‐5 dots, dominated by (100) facet, provide an abundance active sites enhance adsorption activation, promoting formation *CO intermediates. accumulation intermediates on facilitates CO‐CHO reaction, thus enhancing production rate.

Язык: Английский

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