Enhanced electroreduction of CO2 to C2+ products on heterostructured Cu/oxide electrodes

Chem, Год журнала: 2022, Номер 8(8), С. 2148 - 2162

Опубликована: Апрель 29, 2022

Язык: Английский

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Electrocatalytic CO₂ Reduction to C₂₊ Products in Flow Cells

Advanced Materials, Год журнала: 2023, Номер 36(5)

Опубликована: Авг. 31, 2023

Abstract Electrocatalytic CO 2 reduction into value‐added fuels and chemicals by renewable electric energy is one of the important strategies to address global shortage carbon emission. Though classical H‐type electrolytic cell can quickly screen high‐efficiency catalysts, low current density limited mass transfer process essentially impede its industrial applications. The cells based on electrolyte flow system (flow cells) have shown great potential for devices, due higher density, improved local concentration, better efficiency. design optimization are significance further accelerate industrialization electrocatalytic reaction (CO RR). In this review, progress RR C 2+ products concerned. Firstly, main events in development outlined. Second, principles products, architectures, types summarized. Third, optimizing generate reviewed detail, including cathode, anode, ion exchange membrane, electrolyte. Finally, preliminary attempts, challenges, research prospects toward discussed.

Язык: Английский

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Challenges and strategies towards copper-based catalysts for enhanced electrochemical CO2 reduction to multi-carbon products

Fuel, Год журнала: 2022, Номер 332, С. 126114 - 126114

Опубликована: Окт. 2, 2022

Язык: Английский

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Increasing CO Binding Energy and Defects by Preserving Cu Oxidation State via O₂-Plasma-Assisted N Doping on CuO Enables High C₂₊ Selectivity and Long-Term Stability in Electrochemical CO₂ Reduction

ACS Catalysis, Год журнала: 2023, Номер 13(13), С. 9222 - 9233

Опубликована: Июнь 26, 2023

Cu is considered as the most promising catalyst for electrochemical carbon dioxide reduction reaction (CO2RR) to produce C2+ hydrocarbons, but achieving high product selectivity and efficiency with long-term stability remains one of great challenges. Herein, we report a strategy realize CO2RR allowing stable catalytic properties by utilizing benefits oxygen-plasma-assisted nitrogen doping on CuO. It exhibited that defects such oxygen vacancies grain boundaries suitable are generated N2 plasma radicals Also, oxidation state maintained without O2 plasma. Indeed, ON–CuO synthesized through demonstrated enable 77% (including C2H4 56%) current density −34.6 mA/cm2 at −1.1 V vs RHE, well 22 h performance degradation. High performances ascribed increased CO binding energy sites in N-doped Furthermore, an situ X-ray absorption near-edge structure analysis reveals favorable C–C coupling leading products.

Язык: Английский

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How to select heterogeneous CO ₂ reduction electrocatalyst

Deleted Journal, Год журнала: 2023, Номер 3, С. e9120096 - e9120096

Опубликована: Сен. 1, 2023

As an important part of carbon neutralization, dioxide electroreduction reaction (CO₂RR) can convert CO₂ into high value-added chemicals and fuels to realize the recycling resources solve problem environmental pollution. Therefore, exploring element species surface structure catalyst plays a central role in improving performance catalyst, enhancing conversion efficiency forming C₁ C₂₊ products. Here, we summarize recent progress selective regulation CO₂RR products by different elements. In particular, emphasize structure-property relationship microenvironment metal center substrate, heteroatom doping, hydrogen bond network metal-free polymer, construction heterogeneous catalytic system. At same time, advances for identification active sites mechanistic studies on process reducing are reviewed, as well comprehensive review final Finally, outline inevitable challenges faced present our own recommendations aimed at contributing resource utilization.

Язык: Английский

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Strategies to Modulate the Copper Oxidation State Toward Selective C₂₊ Production in the Electrochemical CO₂ Reduction Reaction

Advanced Materials, Год журнала: 2024, Номер 36(21)

Опубликована: Фев. 12, 2024

Abstract The electrochemical reduction of CO 2 to form value‐added chemicals receives considerable attention in recent years. Copper (Cu) is recognized as the only element capable electro‐reducing into hydrocarbons with two or more carbon atoms (C 2+ ), but low product selectivity Cu‐based catalyst remains a major technological challenge overcome. Therefore, identification structural features catalysts great importance for highly selective production C products (ethylene, ethanol, n‐propanol, etc.), and oxidation state Cu species found critical performance. This review introduces efforts fine‐tune increase capture produce specific compounds, intention greatly expediting advance designs. It also points remaining challenges fruitful research directions development that can shape practical technology.

Язык: Английский

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Atomic/molecular layer deposition strategies for enhanced CO₂ capture, utilisation and storage materials

Chemical Society Reviews, Год журнала: 2024, Номер 53(11), С. 5428 - 5488

Опубликована: Янв. 1, 2024

This review focuses on the use of atomic and molecular layer deposition techniques (ALD/MLD) to design materials their applications in CO 2 utilization, capture separation as well sensing.

Язык: Английский

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Probing Cation Effects on *CO Intermediates from Electroreduction of CO₂ through Operando Raman Spectroscopy

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(42), С. 23068 - 23075

Опубликована: Окт. 9, 2023

Cations in an electrolyte modulate microenvironments near the catalyst surface and affect product distribution from electrochemical CO2 reduction reaction, thus, their interaction with intermediate states has been tried to be probed. Herein, we directly observed cation effect on *CO intermediates Cu(OH)2-derived real time through operando surface-enhanced Raman spectroscopy at high overpotentials (-1.0 VRHE). Atop peaks are composed of low-frequency binding (*COLFB) high-frequency (*COHFB) because adsorption sites. These two found have different sensitivities cation-induced field, each is proposed suitably stabilized for efficient C-C coupling. The proportions between *COHFB *COLFB dependent type alkali cations, increases ratio a correlation selective C2H4 production under K+ Cs+, indicating that dominant fast active species. In addition, as hydrated size decreases, more sensitively red-shifted than *COHFB, which promotes coupling suppresses C1 products. Through time-resolved measurements, dynamic changes species observed, showing rapid initial subsequently reaching steady *COHFB.

Язык: Английский

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Cu-based catalyst designs in CO₂ electroreduction: precise modulation of reaction intermediates for high-value chemical generation

Chemical Science, Год журнала: 2023, Номер 14(47), С. 13629 - 13660

Опубликована: Янв. 1, 2023

The massive emission of excess greenhouse gases (mainly CO

Язык: Английский

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Opening Direct Electrochemical Fischer–Tropsch Synthesis Path by Interfacial Engineering of Cu Electrode with P-Block Elements

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(3), С. 3368 - 3387

Опубликована: Янв. 12, 2024

The electrochemical synthesis of syngas (CO and H2) has garnered considerable attention in the context Fischer–Tropsch (FT) employing thermal catalysts. Nonetheless, need for a novel, cost-effective technique persists. In this investigation, we introduce direct (dEC) approach FT that functions under ambient conditions by utilizing p-block element (Sn In) overlaid Cu electrode. Surface *CO H* species were obtained an electrolytic medium through CO2 + H+ e– → HOOCad (or CO adsorption) reactions, respectively. We have observed C2–7 long-chain hydrocarbons with CnH2n+2/CnH2n ratio 1–3, observation can be explained process C–C coupling chain growth conventional synthesis, based on linearity Anderson-Schulz–Flory equation plots. Thick Sn overlayers resulted dominant production formate, while C2H4 found to proportional inversely correlated H2, C2H6, C3–7 hydrocarbon production. EC CO2/CO reduction used dEC offers valuable insights into mechanism C2+ holds promise as eco-friendly producing energy environmental purposes.

Язык: Английский

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