Preferential Formation of Ethylene via Electrocatalytic CO₂ Reduction on Mesoporous Cu₂O Nanoparticles: Synergistic Effects of Pore Structure Confinement and Surface Amine

Chinese Journal of Chemistry, Год журнала: 2024, Номер 42(16), С. 1846 - 1852

Опубликована: Апрель 17, 2024

Comprehensive Summary We present a facile synthetic strategy to create mesoporous Cu 2 O nanocrystals with tunable pore structures and surface functional groups of amine derivatives for efficient preferable electrochemical conversion CO into ethylene. The structural characteristics these can be manipulated using set derivatives, such as pyridine, 4,4'‐bipyridine, hexamethylenetetramine, during the oxidative etching process by bubbling gaseous oxygen in N , ‐dimethylformamide solution. These not only serve but also significantly affect resulting structures. synergistic effect structure confinement functionalization leads superb Faradaic efficiency (FE) 51.9% C H 4 respectively, together partial current density –209.4 mA·cm −2 at –0.8 V vs. reversible hydrogen electrode (RHE). relatively high selectivity towards was investigated DFT simulations, where 4,4'‐bipyridine functionalized seemed favor formation low free energy intermediates. This study provides feasible manipulate regulating process, which sheds light on rational preparation high‐performance RR electrocatalysts.

Язык: Английский

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Understanding oxidation state of Cu-based catalysts for electrocatalytic CO2 reduction

Journal of Material Science and Technology, Год журнала: 2024, Номер unknown

Опубликована: Сен. 1, 2024

Язык: Английский

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Acidic Electrocatalytic Semihydrogenation of Alkynols to Alkenols on Copper Phosphide at Industrial‐Level Current Density

Chinese Journal of Chemistry, Год журнала: 2023, Номер 41(24), С. 3618 - 3624

Опубликована: Сен. 8, 2023

Comprehensive Summary Alkenols are important intermediates for the industrial manufacture of various commodities and fine chemicals. At present, alkenols produced via thermocatalytic semihydrogenation corresponding alkynols using precious metal Pd‐based catalysts in pressurized hydrogen atmosphere. In this work, we highlight an efficient electrocatalytic strategy selectively reducing to under ambient conditions. Using 2‐methyl‐3‐butyn‐2‐ol as a model alkynol, Cu 3 P nanoarrays anchored on foam remarkably deliver industrial‐level partial current density 0.79 A·cm –2 specific selectivity 98% 2‐methyl‐3‐buten‐2‐ol acidic solution. Over 40‐runs stability test, maintain 90% alkynol conversion alkenol selectivity. Even large two‐electrode flow electrolyser, single‐pass exceed 90%. Moreover, selective hydrogenation approach is broadly feasible production water‐soluble alkenols. Electrochemical analyses, theoretical simulation electrochemical in‐situ infrared investigations together reveal that exothermic hydrogenation, facile desorption formation active H surfaces account excellent performance.

Язык: Английский

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Recent advances in copper chalcogenides for CO₂ electroreduction

Physical Chemistry Chemical Physics, Год журнала: 2023, Номер 25(45), С. 30785 - 30799

Опубликована: Янв. 1, 2023

The latest advances in the synthesis and performance of copper chalcogenide materials for CO 2 electroreduction are reviewed, with focus on advanced characterization techniques rational design strategies.

Язык: Английский

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Selective CO2 electroreduction to formate over Cu-based catalyst in S^2-- containing electrolyte

Chemical Communications, Год журнала: 2024, Номер 60(59), С. 7602 - 7605

Опубликована: Янв. 1, 2024

A Cu-based electrocatalyst selectively and durably electroreduces CO 2 to formate with a maximum faradaic efficiency of up 74% in S 2− -containing electrolyte.

Язык: Английский

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Selective N‐Methylation of N‐Methylaniline with CO₂ and H₂ over Cu/In₂O₃ Catalyst^†

Chinese Journal of Chemistry, Год журнала: 2023, Номер 42(3), С. 276 - 282

Опубликована: Сен. 26, 2023

Comprehensive Summary N ‐Methylation of amines with CO 2 and H is a potential approach for utilization because ‐methylated can be used as solvents organic intermediates. In O 3 ‐supported Cu (Cu/In ) acts an effective heterogeneous catalyst ‐methylation reaction ‐methylaniline (MA) , showing higher N,N ‐dimethylaniline (DMA) selectivity than other supported catalysts. On one hand, the dispersion improved by defective support. support active in dissociative adsorption through C—O bond breaking. addition, dissociation ability also enhanced Cu. The combination activation intermediate ‐methylformanilide (MFA), hydrogenation MFA to DMA prohibition C—N cleavage side reactions, thereby enhancing rate MA conversion DMA.

Язык: Английский

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Synthesis of N-Arylpyrrolidines Using CO2 as C1 Source

Chinese Journal of Organic Chemistry, Год журнала: 2024, Номер 44(10), С. 3185 - 3185

Опубликована: Янв. 1, 2024

Язык: Английский

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