Graphene Oxide-Anchored Cu–Co Catalysts for Efficient Electrochemical Nitrate Reduction DOI Open Access

Haosheng Lan,

Yi Zhang,

Le Ding

и другие.

Materials, Год журнала: 2025, Номер 18(11), С. 2495 - 2495

Опубликована: Май 26, 2025

Electrocatalytic nitrate reduction to ammonia (ENRA) presents a promising strategy for simultaneous environmental remediation and sustainable synthesis. In this work, Cu–Co bimetallic catalyst supported on functionalized reduced graphene oxide (RGO) was systematically designed achieve efficient selective production. Surface oxygen functional groups (GO) were optimized through alkaline hydrothermal treatments, enhancing the anchoring capacity metal active sites. Characterization indicated successful formation of uniform heterointerfaces comprising metallic phases, which significantly improved stability performance. Among studied compositions, Cu6Co4/RGO exhibited superior catalytic activity, achieving remarkable selectivity 99.86% Faradaic efficiency 96.54% at −0.6 V (vs. RHE). Long-term electrocatalysis demonstrated excellent durability, with over 90% maintained production after 20 h operation. situ FTIR analysis revealed that introducing Co effectively promoted water dissociation, facilitating hydrogen generation (*H) accelerating transformation intermediates. This work offers valuable mechanistic insights paves way design highly electrocatalysts electrosynthesis.

Язык: Английский

Efficient electrocatalytic nitrate reduction to ammonia at low voltage through copper and graphene oxide co-modified nickel foam DOI
Xiaohan Huang, Zhengyang Liu,

Huayan Yang

и другие.

Journal of Power Sources, Год журнала: 2025, Номер 640, С. 236748 - 236748

Опубликована: Март 13, 2025

Язык: Английский

Процитировано

0
Recent Advances in 3d‐Block Transition Metal‐Based Catalysts for Electrochemical Nitrate Reduction to Ammonia DOI
Chuan Shi, Haoquan Guo, Yue Liang

и другие.

ChemCatChem, Год журнала: 2025, Номер unknown

Опубликована: Май 26, 2025

Abstract Ammonia (NH 3 ) is a crucial chemical in modern industry, serving as key component fertilizers and emerging potential energy carrier. However, traditional NH synthesis via the Haber‐Bosch process highly energy‐intensive contributes significantly to global CO 2 emissions. Electrochemical nitrate reduction reaction (NO RR) has emerged sustainable alternative for production, leveraging renewable electricity reduce −) under ambient conditions. Among various electrocatalysts, 3d‐block transition metal‐based materials have shown remarkable due their low cost, electronic structures, redox flexibility, tunable catalytic properties. This review provides comprehensive analysis of recent advances catalysts NO RR, highlighting catalyst design, performance metrics, mechanistic insights, challenges. Furthermore, strategies such alloying, single‐atom catalysts, high‐entropy alloys are reviewed enhance efficiency selectivity. Finally, we discuss future perspectives on development practical application green aiming bridge gap between fundamental research industrial applications.

Язык: Английский

Процитировано

0
Graphene Oxide-Anchored Cu–Co Catalysts for Efficient Electrochemical Nitrate Reduction DOI Open Access

Haosheng Lan,

Yi Zhang,

Le Ding

и другие.

Materials, Год журнала: 2025, Номер 18(11), С. 2495 - 2495

Опубликована: Май 26, 2025

Electrocatalytic nitrate reduction to ammonia (ENRA) presents a promising strategy for simultaneous environmental remediation and sustainable synthesis. In this work, Cu–Co bimetallic catalyst supported on functionalized reduced graphene oxide (RGO) was systematically designed achieve efficient selective production. Surface oxygen functional groups (GO) were optimized through alkaline hydrothermal treatments, enhancing the anchoring capacity metal active sites. Characterization indicated successful formation of uniform heterointerfaces comprising metallic phases, which significantly improved stability performance. Among studied compositions, Cu6Co4/RGO exhibited superior catalytic activity, achieving remarkable selectivity 99.86% Faradaic efficiency 96.54% at −0.6 V (vs. RHE). Long-term electrocatalysis demonstrated excellent durability, with over 90% maintained production after 20 h operation. situ FTIR analysis revealed that introducing Co effectively promoted water dissociation, facilitating hydrogen generation (*H) accelerating transformation intermediates. This work offers valuable mechanistic insights paves way design highly electrocatalysts electrosynthesis.

Язык: Английский

Процитировано

0