Cited by XANES-EXAFS spectroscopy for discerning and retrieval of atomic and coordination states of a diverse single-metal-atomic structures

Nanoflower‐Like CuPd/CuO Heterostructure for an Energy‐Output Electrocatalytic System Coupling Ammonia Electrosynthesis and Zinc‐Nitrate Battery DOI

Jingsha Li,

Lvfei Liu,

Shunyuan Huang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

Abstract Electrochemical nitrate reduction reaction (NO 3 RR) can effectively alleviate pollution and simultaneously realize ammonia electrosynthesis at room temperature. However, it remains a significant challenge for NO RR to achieve high Faradic efficiency in full concentration range. Herein, nanoflower‐like copper‐palladium alloy/CuO heterostructure (CuPd/CuO@NF) is successfully fabricated by the hydrothermal synthesis of CuO nanoflowers subsequent formation CuPd alloy. The as‐obtained CuPd/CuO@NF exhibits remarkable electrochemical performance − ‐N range from 20 1400 ppm, especially with conversion rate 97.8% NH selectivity 99.3% 94.2% yield 1.37 mmol h −1 cm −2 ppm. In‐situ Fourier transform infrared spectroscopy Raman spectra reveal that first catalyzes 2 , which rapidly reduced forming *NH, *NH OH intermediates. Density functional theory calculations suggest NHO route thermodynamically favorable. When applied zinc‐nitrate battery, demonstrates maximum power density 53.7 mW 99.9% 94.4%. This work offers valuable insights into design novel electrocatalysts batteries.

Language: Английский

Citations

FeIr Alloy Optimizes the Trade‐Off Between Nitrate Reduction and Active Hydrogen Generation for Efficient Electro‐Synthesis of Ammonia in Neutral Media DOI

Jie Xiong,

Likun Jiang,

Botao Zhu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 10, 2025

Abstract Electrochemically promoted nitrate reduction reaction (NITRR) holds great potential for the “green” synthesis of ammonia (NH 3 ). However, NITRR in neutral media, though close to practical scenario, is often limited by an insufficient supply active hydrogen (*H) due sluggish water cleavage. In this work, it demonstrated that a bimetallic alloy FeIr can optimize trade‐off between and *H formation media. As result, exhibits excellent catalytic performance toward with Faradaic efficiency NH up 97.3% high yield rate 11.67 mg h −1 cm −2 at low working −0.6 V (versus reversible electrode (RHE)), surpassing monometallic catalysts as well majority Fe‐based state‐of‐the‐art. It also found displays remarkable electron rearrangement hetero‐atoms their significant orbital hybridization, which benefits not only but process. Moreover, coupling FeIr‐based methanol oxidation (MOR) results sustainable productions formate combined FE nearly 200% cell‐voltage 2 V. This work thus demonstrates promising strategy designing efficient NITRR.

Language: Английский

Citations

Defect‐Enriched Cobalt‐Based Coordination Polymers for Selective and Efficient Nitrate Electroreduction to Ammonia DOI

Yidan Ding,

S. Zhang, Yunxia Liu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract Electrocatalytic nitrate reduction to ammonia (NRA) offers an arousing route for converting widespread pollutant under mild conditions. Among other NRA catalysts, single‐atom catalyst (SAC) has emerged as a promising candidate due its numerous advantages such maximum metal‐atom‐utilization efficiency, homogeneous and tailorable active sites, which still encounters formidable challenge accelerate the kinetics simultaneously suppress competitive hydrogen evolution reaction, especially when operated in electrolytes with low concentration nitrate. Herein, general strategy is reported prepare defect‐enriched coordination polymer catalysts featuring well‐defined unsaturated metal can exhibit exceptional performance even at surpass SACs toward catalysis. Taking cobalt (Co) example, Co‐based polymers (d‐CoCP) counterpart CoCP without defects are investigated proof‐of‐concept study. Both experimental theoretical results elucidate that elaborately‐engineered d‐CoCP markedly decrease thermodynamic barrier reducing *NO *HNO rate‐limiting step along pathway, thus accelerating adsorption of promoting kinetics.

Language: Английский

Citations

Self-reducing Cu2O/Cu nanosheet interface for efficient electrocatalytic production of ammonium from nitrate DOI

Xiaoning Liu, Yicong Wang,

Z. Hu

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125254 - 125254

Published: March 1, 2025

Language: Английский

Citations

XANES-EXAFS spectroscopy for discerning and retrieval of atomic and coordination states of a diverse single-metal-atomic structures DOI

Anubha Yadav, Tapan Dey, Toyanath Joshi

et al.

Materials Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown, P. 130837 - 130837

Published: April 1, 2025

Language: Английский

Citations