CO2 Electroreduction to Multicarbon Products Over Cu2O@Mesoporous SiO2 Confined Catalyst: Relevance of the Shell Thickness DOI Open Access
Yanan Wang, Wenchuan Lai, Haolan Tao

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 17, 2024

Abstract Despite the advantage of high carbon utilization, CO 2 electroreduction (CO ER) in acid is challenged by competitive hydrogen evolution reaction (HER). Designing confined catalysts a promising strategy to suppress HER and boost ER, yet relationship between structure catalytic performance remains unclear, limiting rational design. Herein, using Cu O@mesoporous SiO core‐shell as well‐defined platform, volcano‐shaped found thickness mesoporous layer productivity multicarbon (C 2+ ) products electroreduction. The optimal shell 15 nm identified, with situ spectroscopies theoretical simulations attributing this trade‐off local alkalinity concentration, arising from nanoconfinement effect. At thickness, O@ catalyst achieves C Faradaic efficiency 83.1% ± 2.5% partial current density 687.8 mA cm −2 acidic electrolytes, exceeding most reported catalysts. This work provides valuable insights for design electrocatalysis.

Language: Английский

CuMgAlOx-catalyzed conversion of waste cotton textiles to low-carbon alcohols for sustainable energy DOI
Jiayi Wang, Li Li,

Xiaowei Bai

et al.

Fuel, Journal Year: 2025, Volume and Issue: 396, P. 135357 - 135357

Published: April 14, 2025

Language: Английский

Citations

0
Microenvironment Regulation, Promoting CO2 Conversion to Mono- and Multicarbon Products over Cu-Based Catalysts DOI
Ying‐Ya Liu, Zhichao Sun, Chong Peng

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 16, 2024

This Review summarizes recent advancements in regulating microenvironments for enhancing CO2 conversion, particularly focusing on copper-based catalysts, which are crucial transforming to valuable chemicals and fuels. We discuss strategies microenvironment regulation, including single-atom catalyst design, particle size/facets/morphology control, confinement effects, interfacial engineering. These approaches influence the efficiency selectivity of conversion by optimizing active site density, controlling reactant/intermediate concentrations, promoting charge-transfer processes. highlight importance mass transfer, electrolyte properties, modifying electrode structures improving conversion. Despite significant progress, challenges remain electrocatalytically achieving high current densities multicarbon products, developing effective quantify contribution catalytic performance. Future research will focus advanced characterization techniques, exploring novel materials synthesis methods, utilizing machine learning theoretical modeling design optimization.

Language: Английский

Citations

1
CO2 Electroreduction to Multicarbon Products Over Cu2O@Mesoporous SiO2 Confined Catalyst: Relevance of the Shell Thickness DOI Open Access
Yanan Wang, Wenchuan Lai, Haolan Tao

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 17, 2024

Abstract Despite the advantage of high carbon utilization, CO 2 electroreduction (CO ER) in acid is challenged by competitive hydrogen evolution reaction (HER). Designing confined catalysts a promising strategy to suppress HER and boost ER, yet relationship between structure catalytic performance remains unclear, limiting rational design. Herein, using Cu O@mesoporous SiO core‐shell as well‐defined platform, volcano‐shaped found thickness mesoporous layer productivity multicarbon (C 2+ ) products electroreduction. The optimal shell 15 nm identified, with situ spectroscopies theoretical simulations attributing this trade‐off local alkalinity concentration, arising from nanoconfinement effect. At thickness, O@ catalyst achieves C Faradaic efficiency 83.1% ± 2.5% partial current density 687.8 mA cm −2 acidic electrolytes, exceeding most reported catalysts. This work provides valuable insights for design electrocatalysis.

Language: Английский

Citations

1