Bimetallic Tandem Strategy for Effective Modulation of CO2 Electrocatalytic Selectivity on Relatively Inert Cu Interfaces DOI Creative Commons
Yong Yan, Huan Zhou,

Tongxian Li

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

Abstract The development of effective strategies to enhance the activity and selectivity Cu‐based catalysts for CO 2 reduction reaction (CO RR) remains a critical challenge, particularly on relatively inert Cu facets that are highly active in competitive hydrogen evolution (HER). In this study, series Cu‐M (M = Au, Ag, Pd) bimetallic tandem interfaces fabricated nanocolumn arrays (Cu NCAs) with predominantly exposed (200) facets. These excited significant number + species modulated adsorption behavior intermediates RR, resulting improved RR substantial HER. Notably, Cu‐Au, Cu‐Ag, Cu‐Pd NCAs displayed excellent C H 4 , CO, HCOOH products, optimized faradaic efficiency (FE) ≈43.2, ≈48.0, ≈50.7%, respectively. According situ spectroscopic analysis, each interface exhibited distinct catalytic pathways: Cu‐Au favored *COOH *CO followed by C‐C coupling production, Cu‐Ag promoted desorption generation, facilitated *OCHO formation production. This study provides strategy design high‐performance more practical electrodes directly modifying various commercial substrates.

Language: Английский

Advances in rare metal catalysis for common CO2 reduction reactions DOI

Shijie Liu,

Tingting Hu,

Hsien‐Kun Chu

et al.

Rare Metals, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Language: Английский

Citations

0

Design of Ultra-Stable Solid Amine Adsorbents and Mechanisms of Hydroxyl Group-Dependent Deactivation for Reversible CO2 Capture from Flue Gas DOI Creative Commons

Meng Zhao,

Liang Huang, Yanshan Gao

et al.

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: Feb. 28, 2025

Abstract Although supported solid amine adsorbents have attracted great attention for CO 2 capture, critical chemical deactivation problems including oxidative degradation and urea formation severely restricted their practical applications flue gas capture. In this work, we reveal that the nature of surface hydroxyl groups (metal Al–OH nonmetal Si–OH) plays a key role in mechanisms. The polyethyleneimine (PEI) on Al–OH-containing substrates suffers from severe during capture step due to breakage amine-support hydrogen bonding networks, but exhibits an excellent anti-urea feature by preventing dehydration carbamate products under pure regeneration atmosphere. contrast, PEI Si–OH-containing anti-oxidative stability simulated conditions forming robust protective network with Si–OH, obvious step. We also problem PEI-SBA-15 can be avoided incorporation OH-containing PEG additive. Based intrinsic understanding mechanisms, successfully synthesized adsorbent 40PEI-20PEG-SBA-15 demonstrates outstanding retention high capacity 2.45 mmol g −1 over 1000 adsorption–desorption cycles, together negligible loss aging (10% + 5% O 3% H O) one month at 60–70 °C. believe work makes contribution advancement field ultra-stable amine-based materials.

Language: Английский

Citations

0

The Role of Electrocatalysts in the Electrochemical Conversion of CO2 into Multi-Carbon Products (C2+): A Review DOI Open Access
Khalid Alkhuzai, Shaikh Hasibul Majid, Ebraheem Abdu Musad Saleh

et al.

Catalysts, Journal Year: 2025, Volume and Issue: 15(3), P. 237 - 237

Published: March 1, 2025

In recent years, the electrochemical conversion of CO2 gasses into renewable fuels (e.g., ethylene, ethanol, and propanol) has attracted much attention. this process, electrocatalysts play a crucial role in accelerating reduction reaction (CO2RR) process. review, synthesis C2+ products from was investigated. To end, various classifications such as metals, metal oxides, alloys, covalent organic frameworks (COFs), carbon-based electrocatalysts, metal–organic (MOFs) their utilization chemicals were fully Also, impact factors catalyst stability, temperature, membrane type, pressure, current density, pH, type electrolyte on CO2RR process to generate valuable Moreover, mechanism for producing Furthermore, limitations future perspective surveyed. Finally, industrial application value-added Based our investigation, Cu Cu2O-based are suitable catalysts products, particularly ethylene ethanol.

Language: Английский

Citations

0

Electrocatalytic CO2 Reduction to C2 Products via Enhanced C─C Coupling Over Cu‐based Catalysts: Dynamic Reaction and Regulation Mechanism DOI
Meidan Que, Bin Wang, Yawei Yang

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Abstract Benefiting from the optimal interaction strength between Cu and reactants, Cu‐based catalysts exhibit a unique capability of facilitating formation various multi‐carbon products in electricity‐driven CO 2 reduction reactions (CO ERR). Nonetheless, ERR process on these is characterized by intricate polyproton‐electron transfer mechanisms that are frequently hindered high energy barriers, sluggish reaction kinetics, low C─C coupling efficiency. This review employs advanced characterization techniques, such as sum frequency generation technology, to provide comprehensive analysis mechanism surface, examining it both spatial temporal dimensions proposing spatial‐temporal mechanism. To improve efficiency, series regulatory strategies focused surface microenvironment, catalyst structure, internal electronic thereby offering novel insights for upcoming design enhancement electrocatalysts.

Language: Английский

Citations

0

Bimetallic Tandem Strategy for Effective Modulation of CO2 Electrocatalytic Selectivity on Relatively Inert Cu Interfaces DOI Creative Commons
Yong Yan, Huan Zhou,

Tongxian Li

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

Abstract The development of effective strategies to enhance the activity and selectivity Cu‐based catalysts for CO 2 reduction reaction (CO RR) remains a critical challenge, particularly on relatively inert Cu facets that are highly active in competitive hydrogen evolution (HER). In this study, series Cu‐M (M = Au, Ag, Pd) bimetallic tandem interfaces fabricated nanocolumn arrays (Cu NCAs) with predominantly exposed (200) facets. These excited significant number + species modulated adsorption behavior intermediates RR, resulting improved RR substantial HER. Notably, Cu‐Au, Cu‐Ag, Cu‐Pd NCAs displayed excellent C H 4 , CO, HCOOH products, optimized faradaic efficiency (FE) ≈43.2, ≈48.0, ≈50.7%, respectively. According situ spectroscopic analysis, each interface exhibited distinct catalytic pathways: Cu‐Au favored *COOH *CO followed by C‐C coupling production, Cu‐Ag promoted desorption generation, facilitated *OCHO formation production. This study provides strategy design high‐performance more practical electrodes directly modifying various commercial substrates.

Language: Английский

Citations

0