Catalyst Design and Engineering for CO₂‐to‐Formic Acid Electrosynthesis for a Low‐Carbon Economy

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 12, 2024

Abstract Formic acid (FA) has emerged as a promising candidate for hydrogen energy storage due to its favorable properties such low toxicity, flammability, and high volumetric capacity under ambient conditions. Recent analyses have suggested that FA produced by electrochemical carbon dioxide (CO 2 ) reduction reaction (eCO RR) using low‐carbon electricity exhibits lower fugitive (H emissions global warming potential (GWP) during the H carrier production, transportation processes compared those of other alternatives like methanol, methylcyclohexane, ammonia. eCO RR can enable industrially relevant current densities without need pressures, temperatures, or auxiliary sources. However, widespread implementation is hindered requirement highly stable selective catalysts. Herein, aim explore evaluate catalyst engineering in designing nanostructured catalysts facilitate economically viable production FA.

Язык: Английский

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Single-Pass Electrooxidation of Glycerol on Bismuth-Modified Platinum Electrodes as an Anodic Process Coupled to the Continuous CO₂ Electroreduction toward Formate

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(9), С. 3671 - 3679

Опубликована: Фев. 21, 2024

CO2 electroreduction has emerged as a promising strategy for reducing emissions while simultaneously generating valuable products, particularly formic acid/formate. To further enhance the sustainability of this process, traditional oxygen evolution reaction at anode can be replaced by more interesting like glycerol oxidation to high value-added in covalorization approach. In study, effect presence bismuth (Bi) atom supplier (Bi2O3 particles) anolyte solution during electrooxidation process on platinum (Pt) electrodes coupled with formate is investigated first time, operating continuous mode single pass through reactor. The results reveal that cathode, significant HCOO– production, Faradaic efficiencies reaching 93%, and modest energy consumption 208 kW h·kmol–1 were obtained using Bi gas diffusion electrodes. On other hand, anode, Bi2O3 particles leads alteration distribution high-value-added products obtained. For instance, demonstrates remarkable dihydroxyacetone (DHA) production 283 μmol·m–2·s–1, surpassing nonmodified Pt performance system offers pathway simultaneous coproduction from both glycerol.

Язык: Английский

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CuO (111) Microcrystalline Evoked Indium–Organic Framework for Efficient Electroreduction of CO₂ to Formate

Small, Год журнала: 2024, Номер 20(34)

Опубликована: Апрель 9, 2024

Abstract Electrochemical reduction of carbon dioxide (CO 2 RR) to formate is economically beneficial but suffers from poor selectivity and high overpotential. Herein, enriched microcrystalline copper oxide introduced on the surface indium‐based metal–organic frameworks. Benefiting CuO (111) shell formed catalytic active In–Cu interfaces, obtained MIL‐68(In)/CuO heterostructure display excellent CO RR with a Faradaic efficiency (FE) as 89.7% at low potential only −0.7 V vs. RHE in flow cell. Significantly, membrane electrode assembly (MEA) cell based exhibit remarkable current density 640.3 mA cm −2 3.1 can be stably operated for 180 h 2.7 200 . The ex/in situ electrochemical investigations reveal that introduction increases formation rate intermediate * HCOO − inhibits competitive hydrogen evolution reaction. This work not provides an in‐depth study mechanism pathways In/Cu composite catalyst also offers effective strategy interface design electrocatalytic

Язык: Английский

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Progress and perspectives for electrochemical CO2 reduction to formate

Materials Today Energy, Год журнала: 2023, Номер 38, С. 101433 - 101433

Опубликована: Окт. 6, 2023

Язык: Английский

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Perspectives of Magnetically Enhanced Electroconversion of CO₂ to Formic Acid and Formate

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(9), С. 3390 - 3401

Опубликована: Фев. 21, 2024

The persistent accumulation of carbon dioxide (CO2) in the atmosphere represents a major environmental threat facing world today. electrochemical reduction CO2 (ERCO2) offers an appealing opportunity to convert waste valuable products. Nevertheless, this technology has been associated with several shortcomings that could compromise its applicability at large scale. use membrane electrode assembly (MEA) configuration for cathode, composed gas diffusion (GDE) and ion-exchange membrane, stands out results obtained. This promising alternative still needs solve difficulty operating high current densities due humidified input streams. Coupling magnetic fields ERCO2 another interesting strategy boosting electrocatalytic performance. Herein, comparative analysis on actual impact MEA-based electrolyzers is provided. To gain in-depth understanding extent enhancement ERCO2, overview focused widely researched conversion formic acid/formate via above-mentioned strategies. Collectively, perspective evidences advantages bottlenecks highlights potential overcoming some challenges systems.

Язык: Английский

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Unlocking the Potential for Methanol Synthesis via Electrochemical CO₂ Reduction Using CoPc-Based Molecular Catalysts

ACS Nano, Год журнала: 2024, Номер 18(33), С. 21623 - 21632

Опубликована: Авг. 8, 2024

The electrochemical CO2 reduction reaction (CO2RR) to produce methanol (CH3OH) is an attractive yet challenging approach due a lack of selective electrocatalysts. An immobilized cobalt phthalocyanine (CoPc) molecular catalyst has emerged as promising electrocatalyst for CH3OH synthesis, demonstrating decent activity and selectivity through CO2–CO–CH3OH cascade reaction. However, CoPc's performance limited by its weak binding strength toward the CO intermediate. Recent advancements in modification aimed at enhancing intermediate have shown great promise improving CO2-to-CH3OH performance. In this Perspective, we discuss competitive mechanism between that hinders formation summarize effective strategies can enhance both conversion activity. Finally, offer future perspectives on optimization inspire further research efforts fully unlock potential synthesis via CO2RR using catalysts.

Язык: Английский

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Rational Designing Microenvironment of Gas‐Diffusion Electrodes via Microgel‐Augmented CO₂ Availability for High‐Rate and Selective CO₂ Electroreduction to Ethylene

Advanced Science, Год журнала: 2024, Номер 11(40)

Опубликована: Авг. 29, 2024

Abstract Efficient electrochemical CO 2 reduction reaction (CO RR) requires advanced gas‐diffusion electrodes (GDEs) with tunned microenvironment to overcome low availability in the vicinity of catalyst layer. Herein, for first time, pyridine‐containing microgels‐augmented is presented Cu O‐based GDE high‐rate ethylene, owing presence ‐phil microgels amine moieties. Microgels as three‐dimensional polymer networks act micro‐reservoirs engineer and boost local availability. The superior ethylene production performance modified by 4‐vinyl pyridine microgels, compared diethylaminoethyl methacrylate indicates bifunctional effect pyridine‐based enhance availability, electrocatalytic reduction. While Faradaic efficiency (FE) without was capped at 43% 300 mA cm −2 , showed 56% FE 700 . A similar trend observed zero‐gap design, GDEs 58% −4.0 cell voltage (>350 current density), resulting over 2‐fold improvement production. This study showcases use a higher rate RR‐to‐C 2+ opening an avenue several other more selective efficient electrolysis.

Язык: Английский

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Unraveling the role of NiSnPH@OOH/CC perovskite hydroxide for efficient electrocatalytic oxidation of methanol to formate

Nano Research, Год журнала: 2023, Номер 17(4), С. 2388 - 2399

Опубликована: Сен. 18, 2023

Язык: Английский

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Advances and Challenges of Carbon‐Free Gas‐Diffusion Electrodes (GDEs) for Electrochemical CO₂ Reduction

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 26, 2024

Abstract Electrochemical CO 2 reduction reaction (CO RR) coupled with renewable electricity holds promises for efficient mitigation of carbon emission impacts on the environment and turning into valuable chemicals. One important task in RR development is design fabrication electrodes stable operation long term. Gas‐diffusion (GDEs) have been employed to continuously feed electrolyzers. Despite significant advances GDE tailoring properties, present GDEs often suffer from critical issue flooding due electrowetting carbon‐based substrates, which hinders transition industrial application. To address flooding, intrinsically hydrophobic polymeric substrates recently fabricated shown promising performances. Herein, challenges associated carbon‐free are reviewed RR. This review first briefly outlines electrolyzers basics. Through discussion around shortcomings conventional GDEs, most recent efforts resolve summarized. Subsequently, advances, advantages, elaborated. Finally, priorities future studies suggested, aim support advancement scale‐up extend them other electrochemical systems where gas electrolyte contact.

Язык: Английский

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Advanced systems for enhanced CO₂ electroreduction

Chemical Society Reviews, Год журнала: 2024, Номер unknown

Опубликована: Дек. 4, 2024

This review explores the latest developments in CO 2 electroreduction based systems, including coupling reaction co-reduction cascade and integrated capture conversion systems.

Язык: Английский

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