Ethyl-activated carbon nitride for efficient photocatalytic CO2 conversion

Science China Materials, Год журнала: 2024, Номер 67(2), С. 541 - 549

Опубликована: Янв. 24, 2024

Язык: Английский

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Direct Electrochemical Reduction of CO₂ to C₂₊ Chemicals: Catalysts, Microenvironments, and Mechanistic Understanding

ACS Energy Letters, Год журнала: 2025, Номер 10(1), С. 600 - 619

Опубликована: Янв. 2, 2025

The electrochemical reduction reaction of CO2 (eCO2RR) to chemicals presents a viable solution for addressing climate change and sustainable manufacturing. In this Review, we describe the recent advancements in eCO2RR multicarbon (C2+) production from aspects catalyst structure, microenvironments, mechanistic understanding. We draw experimental theoretical comparisons between systems containing bulk highly dispersed metals, alloys, metal compounds recount new results microenvironmental impacts as well catalytic mechanism. From our own studies, offer some viewpoints on electrocatalytic mechanism during complex multistep proton-coupled electron transfers propose several research directions unlocking full potential scalable industrial CO2-to-C2+ conversion.

Язык: Английский

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Promoted CF₄ Decomposition via Enhanced Tricoordinated Al Active Sites

ACS ES&T Engineering, Год журнала: 2024, Номер 4(5), С. 1142 - 1148

Опубликована: Фев. 16, 2024

Tetrafluoromethane (CF4), as a typical perfluorocarbon (PFC), has remarkable global warming potential (GWP) of 7390 and an ultralong lifetime 50 000 years, making its effective treatment crucial for mitigating environmental impact. Catalytic hydrolysis is promising way decomposition, in which Al-based materials have been widely used efficient catalysts. However, the deficiency strong Lewis acidic-tricoordinated Al (AlIII) sites strongly limits their catalytic performance. In this work, CF4 decomposition was achieved via promoting AlIII over ZnAl2O4 through facile acid strategy. Among various treatments, it found that H2SO4 treated could achieve 100% under relatively low temperature 600 °C kept above 70% removal 160 h running. The 27Al magic angle spinning nuclear magnetic resonance (MAS NMR) spectra demonstrated proportion increased from ∼0% pristine one to 7.5% after treatment. Pyridine-infrared (Py-IR) spectroscopy NH3 temperature-programmed desorption (NH3-TPD) CF4-TPD tests indicated amount adsorption capacity were dramatically improved This work proposes new strategy improve decomposition.

Язык: Английский

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d-band center engineering of single Cu atom and atomic Ni clusters for enhancing electrochemical CO2 reduction to CO

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 674, С. 326 - 335

Опубликована: Июнь 24, 2024

Язык: Английский

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Promotion of C─C Coupling in the CO₂ Electrochemical Reduction to Valuable C₂₊ Products: From Micro‐Foundation to Macro‐Application

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 2, 2025

Abstract The electrochemical CO 2 reduction reaction (CO RR) to valuable C 2+ products emerges as a promising strategy for converting intermittent renewable energy into high‐energy‐density fuels and feedstock. Leveraging its substantial commercial potential compatibility with existing infrastructure, the conversion of multicarbon hydrocarbons oxygenates (C ) holds great industrial promise. However, process is hampered by complex multielectron‐proton transfer reactions difficulties in reactant activation, posing significant thermodynamic kinetic barriers commercialization production. Addressing these necessitates comprehensive approach encompassing multiple facets, including effective control C─C coupling electrolyzers using efficient catalysts optimized local environments. This review delves advancements outstanding challenges spanning from microcosmic macroscopic scales, design nanocatalysts, optimization microenvironment, development electrolyzers. By elucidating influence electrolyte environment, exploring flow cells, guidelines are provided future research aimed at promoting coupling, thereby bridging microscopic insights applications field electroreduction.

Язык: Английский

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Advances and strategies in the electrocatalytic conversion of carbon dioxide to valuable chemicals and fuels

Fuel, Год журнала: 2024, Номер 377, С. 132539 - 132539

Опубликована: Авг. 14, 2024

Язык: Английский

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Advances in Cu-based Catalysts for Electroreduction of CO2 to C2H4 in Flow Cells

Green Energy & Environment, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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Singlet oxygen species induced by colloidal crystalline carbon nitride induced for efficient H2O2 synthesis with in situ antibacterial effect

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 77, С. 1176 - 1184

Опубликована: Июнь 22, 2024

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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Amino‐Induced CO₂ Spillover to Boost the Electrochemical Reduction Activity of CdS for CO Production

Small, Год журнала: 2024, Номер unknown

Опубликована: Июнь 8, 2024

Abstract A considerable challenge in CO 2 reduction reaction (CO RR) to produce high‐value‐added chemicals comes from the adsorption and activation of form intermediates. Herein, an amino‐induced spillover strategy aimed at significantly enhancing capabilities CdS supported on N‐doped mesoporous hollow carbon sphere (NH −CdS/NMHCS) for highly efficient RR is presented. The prepared NH −CdS/NMHCS exhibits a high Faradaic efficiency (FE ) exceeding 90% −0.8 −1.1 V versus reversible hydrogen electrode (RHE) with highest FE 95% −0.9 RHE H cell. Additional experimental theoretical investigations demonstrate that alkaline −NH group functions as potent trapping site, effectively adsorbing acidic , subsequently triggering CdS. amino modification‐induced spillover, combined electron redistribution between NMHCS, not only readily achieves spontaneous * COOH but also greatly reduces energy required conversion intermediate, thus endowing improved kinetics reduced overpotential ‐to‐CO conversion. It believed this research can provide valuable insights into development electrocatalysts superior application.

Язык: Английский

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