*H Species Regulation of Heterostructured Cu2O/NiO Nanoflowers Boosting Tandem Nitrite Reduction for High‐Efficiency Ammonia Production DOI Open Access
Yi Feng, Xian‐Wei Lv, Haoyu Wang

et al.

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

Published: March 18, 2025

Abstract Ambient electrocatalytic reduction of NO 2 − to NH 3 (NO RR) provides a reliable route for migrating pollutants and simultaneously generating valuable 3. However, the RR involves multistep electron transfer complex intermediates, rendering achievement high selectivity major challenge. In this contribution, heterostructured Cu O/NiO nanoflowers are explored incorporating advantages dual active sites as highly selective catalyst. Combined theoretical calculations in situ FTIR/EPR spectroscopy analysis, it is revealed synergistic effect O NiO promote energetics heterostructure electrocatalyst through tandem catalysis pathway, where activates initial absorption deoxygenation boosting * formation, while generated on then transferred substrate with abundant hydrogen conversion. Moreover, formation enhances H retention capacity, promoting consumed inhibiting inter‐ species binding. As result, equipped flow cell displays superior yield rate 128.2 mg h −1 cm −2 Faradaic efficiency 97.1% at current density −1.25 A . Further, designed system proven be adaptable other electrochemical production reactions including reduction.

Language: Английский

Recent Progress in Cobalt‐Based Electrocatalysts for Efficient Electrochemical Nitrate Reduction Reaction DOI Open Access

Xiangfei Meng,

Xinyi Tan,

Yan Ma

et al.

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

Published: Dec. 9, 2024

Abstract Electrochemical nitrate reduction reaction (NO 3 − RR) provides a sustainable and efficient way to producing ammonia at ambient condition denitrifying wastewater. However, NO RR is still confronted with some barriers present, because of the sluggish kinetics competitive hydrogen evolution (HER). Particularly, it requires highly robust selective electrocatalysts, which steers complex multistep reactions toward process. Among various Co‐based electrocatalysts demonstrate rapid kinetics, steady catalytic performance, suppressive impact on HER for RR, attracting more attention. In this review, focused Cobalt‐based design corresponding strategies are summarized. detail, these can be concisely classified into five categories, including oxides hydroxides, alloys, metal, heteroatom‐doped materials, metal organic frameworks derivatives. Each category extensively discussed, its concepts ideas clearly conveyed through appropriate illustrations figures. Finally, scientific technological challenges as well promising constructing system in future discussed. It expected that review provide valuable insights guidance rational ultimately advancing their applications industrial scenario high current density, stability, energy efficiency.

Language: Английский

Citations

7
Recent Breakthroughs in Electrocatalytic Reduction of Nitrogen-Oxyanions for Environmentally Benign Ammonia Synthesis DOI
Minghang Jiang, Xiaochuan Huang, Dan Luo

et al.

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110683 - 110683

Published: Jan. 1, 2025

Language: Английский

Citations

1
The charge redistribution induced by Cu-Co bimetallic synergies efficiently promotes electrochemical reduction to ammonia DOI
Yi Li, Shiyin Ji, Yong Fan

et al.

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 162950 - 162950

Published: March 1, 2025

Language: Английский

Citations

1
Revealing the Tandem Behavior of Iron‐Group/Copper Binary Catalysts in the Electroreduction of Nitrate to Ammonia DOI Open Access

Qiuyu Yan,

Rundong Zhao, Chen Huang

et al.

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

Published: March 16, 2025

Abstract As a green strategy for both ammonia (NH 3 ) production and wastewater purification, electrochemical reduction of nitrate (NO RR) faces challenges due to the nitrite 2 − accumulation competitive hydrogen evolution reaction (HER). Tandem catalysis NO NH offers great potential enhancing selectivity. Herein, iron‐group (Fe, Co, or Ni) nanosheets are introduced onto Cu nanowires construct Cu‐Fe, Cu‐Co, Cu‐Ni tandem systems respectively. Specifically, sites facilitate conversion . Fe sites, similar Cu, reduce , exacerbating rather than converting it their inability precisely capture Co exhibiting excellent moderate HER activity, can seamlessly operate with realize well‐ordered relay catalysis, which achieves superior yield rate 48.44 mg h −1 cm −2 Ni demonstrate removal capability at low overpotentials, leading Faraday efficiency 99.47%. However, its remarkable HER‐active property demonstrated via in situ polarization imaging makes challenge ampere‐level current densities. This work identifies behavior coupled providing reference design further optimization system.

Language: Английский

Citations

1
Electrocatalytic nitrite reduction to ammonia on isolated bismuth alloyed ruthenium DOI

Shiyao Shang,

Fuzhou Wang,

Zeyi Sun

et al.

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

Language: Английский

Citations

6
Tailoring the d‑Band Center of High‐Entropy Perovskite Oxide Nanotubes for Enhanced Nitrate Electroreduction DOI
Cun Chen, Xu Zhen, Guangtong Hai

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 6, 2024

Abstract High‐entropy perovskite oxides exhibit promising application prospects in the field of electrocatalysis, owing to their flexible elemental composition, plentiful active sites, and superior structural stability. Herein, high‐entropy oxide nanotubes are prepared with La, Nd, Pr, Er, Eu at A‐site by electrospinning as efficient electrocatalysts for nitrate reduction reaction (NO 3 RR). Electrochemical tests demonstrate that LaNd 0.25 Pr Er CuO 4 (LNPEEC NTs) display outstanding NO RR performance, achieving a NH Faraday efficiency (FE NH3 ) 100% −0.7 V versus reversible hydrogen electrode (RHE) yield rate 1378 µg h −1 mg cat. −1.0 RHE , outperforming Nd 2 (NC NTs). Furthermore, LNPEEC NTs also excellent stability even after 10 cycles . X‐ray absorption spectroscopy confirms multi‐component regulation optimizes coordination environment Cu B‐site, increasing unsaturated sites thus providing more sites. Additionally, density functional theory calculations reveal doping rare‐earth elements modulates d‐band center B‐site reduces energy barrier rate‐determining step, enhancing adsorption − promoting performance.

Language: Английский

Citations

5
I3‐‐Mediated Oxygen Evolution Activities to Boost Rechargeable Zinc‐Air Battery Performance with Low Charging Voltage and Long Cycling Life DOI Open Access

Xiaohong Zou,

Qian Lü,

Lizhen Wu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 4, 2024

An effective strategy to facilitate oxygen redox chemistry in metal-air batteries is introduce a mediator into the liquid electrolyte. The rational utilization of mediators accelerate charging kinetics while ensuring long lifetime alkaline Zn-air challenging. Here, we apply commercial acetylene black catalysts achieve an I

Language: Английский

Citations

4
A Cu/Fe3O4@CN tandem catalyst for efficient ammonia electrosynthesis from nitrate reduction DOI

Xuetao Cheng,

Huilin Zhao, Pengfei Liu

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 682, P. 703 - 714

Published: Nov. 29, 2024

Language: Английский

Citations

4
Tuned Targeted Catalytic Engineering Enables High-Selective Electrochemical Low-Concentration Nitrate-to-Ammonia DOI
Tong Zhao, Ke Wang, Shiyu Zhang

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 361, P. 124693 - 124693

Published: Oct. 10, 2024

Language: Английский

Citations

3
Gelatin‐Induced Synthesis of Strain‐Engineered Spherical Cu2O Nanoparticles for Efficient Nitrate Reduction to Ammonia DOI Open Access
Ji Li,

Kai Wu,

Jing Heng

et al.

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

Published: Jan. 29, 2025

The electrochemical reduction of nitrate to ammonia offers an environmentally sustainable pathway for nitrogen fixation. However, achieving both efficiency and selectivity in presents a formidable challenge, due the involvement sluggish multielectron transfer processes. Herein, successful synthesis spherical Cu₂O nanoparticles (s-Cu₂O) exhibiting significant compressive strain effects, achieved through one-pot method using gelatin as structural modifier, is reported. s-Cu₂O catalyst demonstrates exceptional performance reaction (NO3RR), Faradaic (FENH3) 95.07%, 92.03%, conversion rate 97.77%, yield 284.83 µmol h⁻¹ cm⁻2 at -0.8 V versus reversible hydrogen electrode (vs. RHE) production. Structural characterization density functional theory calculations reveal that plays critical role modulating electronic structure catalyst, thereby activating *NO intermediate potential determining step effectively suppressing evolution reaction. Furthermore, it implemented Zn-NO3 - battery, test results indicate battery peak power 3.95 mW cm-2 0.129 (vs Zn/Zn2⁺), illustrating its excellent efficacy. This work introduces novel strategy rational design high-performance electrocatalysts engineering, offering broad implications energy-efficient synthesis, cycling.

Language: Английский

Citations

0