Entropy‐Driven Stabilization of Noble Metal Single Atoms: Advancing Ammonia Synthesis and Energy Output in Zinc‐Nitrate Batteries DOI
Hele Guo, Zhongyuan Guo,

Guohao Xue

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 6, 2025

Noble metal single atoms (NMSA) offer exceptional atom utilization and catalytic activity but face challenges like limited stability, low atomic loading, complex synthesis. This study presents an innovative entropy-driven strategy to stabilize Ru (SA) on a (CePrYZrHf)Ox high-entropy oxide substrate (Ruα%-HEO). Due their defect-rich structure significant lattice distortion, HEO substrates can accommodate more SA than traditional low-entropy oxides (LEO) CeO2. is also effective for achieving high loadings of other NMSAs, such as Pd Pt. Ru3%-HEO, electrocatalyst nitrate reduction, achieves ammonia yield (5.79 mg h-1 mgcat. -1) Faradaic efficiency (FE) 91.3%. Density functional theory (DFT) calculations reveal that Ru3%-HEO exhibits favorable thermodynamics with lower energy barrier the rate-determining step first hydrogenation (*NO + H+ e⁻ → *NOH) stronger intermediates adsorption compared RuO2, enhancing its efficiency. As cathode material in zinc-nitrate battery, demonstrates NH3 rate (1.11 cm-2) FE value (93.4%). provides efficient produce stable high-loading using materials, showcasing broad applicability advanced electrocatalysis.

Язык: Английский

Construction of ternary alloy Cu-Ni-Co catalysts with highly active sites to enhance the initial adsorption process of nitrate reduction to ammonia DOI
Kun Zhang, Gangya Wei,

Zunjie Zhang

и другие.

Electrochimica Acta, Год журнала: 2024, Номер 486, С. 144124 - 144124

Опубликована: Март 15, 2024

Язык: Английский

Процитировано

6

Electrochemical production of ammonia: nitrate reduction over novel Cu-Ni-Al metallic glass nanoparticles used as highly active and durable catalyst DOI
Yang Liu, S. Niu,

Yu Zou

и другие.

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер unknown, С. 124729 - 124729

Опубликована: Окт. 1, 2024

Язык: Английский

Процитировано

6

Conductivity-mediated in situ electrochemical reconstruction of CuOx for nitrate reduction to ammonia DOI
Hao Liang, Yinqiao Zhang, Xiaona Zhang

и другие.

Nanoscale, Год журнала: 2024, Номер 16(29), С. 13895 - 13904

Опубликована: Янв. 1, 2024

CP/CuO x with suitable copper valence states obtained by fine-tuning the conductivity of electrochemical reconstruction may provide a competitive cathode catalyst for achieving excellent activity and selectivity NO 3 − -to-NH conversion.

Язык: Английский

Процитировано

4

Single-, Double-, and Triple-atom Catalysts on PC6 for Nitrate Reduction to Ammonia: A Computational Screening DOI
Jinrui Huang, Shixiang Hu, Mengran Liu

и другие.

Electrochimica Acta, Год журнала: 2024, Номер 504, С. 144915 - 144915

Опубликована: Авг. 15, 2024

Язык: Английский

Процитировано

4

High-entropy FeCoNiCuRu solid solutions triggered cocktail effect to achieve fine-tuning adsorption energy for boosting nitrate electroreduction to ammonia DOI

Tianfang Yang,

Jinrui Huang, Shixiang Hu

и другие.

Chemical Engineering Journal, Год журнала: 2024, Номер 500, С. 157426 - 157426

Опубликована: Ноя. 1, 2024

Язык: Английский

Процитировано

4

A Cascade Jet Plasma Oxidation─electroreduction System Using Pd‐Ni Dual‐Site Catalyst for Sustainable Ammonia Production from Air DOI

Jun Ding,

Wenyi Li, Heng Zhang

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Авг. 2, 2024

Abstract Electrocatalytic N 2 reduction reaction (eNRR) has been deemed as an alternative approach to the Haber‐Bosch (H‐B) process for ammonia (NH 3 ) production, but it remains a huge challenge. Here jet plasma oxidation of is reported in air into NO x and subsequently − coupling with electrochemical (pN ─eNO RR) over PdNi alloying nanoparticles on N‐doped carbon nanotubes (PdNi/N‐CNTs) NH synthesis. The results demonstrate that reactor possesses excellent gas reforming capacity achieve largest yield rate 30.46 mmol h −1 low energy consumption 2.66 kWh mol . For subsequent eNO RR, PdNi/N‐CNTs can afford 34.96 mg cat. faradaic efficiency (FE) 98.21% at −0.38 0.02 V (vs RHE), respectively. In situ spectroscopic characterizations combined theoretical calculations unveil provide Pd Ni dual active sites, enabling activation site H * provision facilitate RR. A cascade pN ‐eNO RR system constructed sustainable achieving stable 25.56 , average FE >85%, well conversion 44.62% constant ampere‐level current finally collection gram‐level 4 SO product.

Язык: Английский

Процитировано

3

Stepwise H*-Mediated and Non-H* Reduction Processes for Highly Selective Transformation of Nitrate to Nitrogen Gas Using a ZVAl-Based Material DOI
Yan Li, Wenjie Liu, Hua Zhu

и другие.

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 6, 2025

Improving the reduction efficiency and N2 selectivity is important for nitrate decontamination. A novel ternary ball-milled Al-Cu-AC material reported to achieve a highly selective of N2. The process, driven by continuous dissolution zero-valent aluminum (ZVAl), demonstrated stepwise scheme. interesting shift in electron-donating pathways was ascribed spontaneous change microenvironmental pH from neutral alkaline. (1:1:5 mass ratio) completely removed 30 mg/L NO3--N over wide range (5-9), achieving 83% TN removal N2-selectivity, without detectable copper leaching. atomic hydrogen (H*)-mediated occurring on Cu component proven be crucial fast transformation NO3- NO2-, while non-H* process dominated electrochemical NO2- AC cathode Al || microgalvanic cells formed material. primary route identified as *NOH pathway, superiority toward verified with actual wastewater. This study revealed how influenced ZVAl provides new approach maximize performance metals.

Язык: Английский

Процитировано

0

A Cu‐Cu2O/Ni2P Heterostructure for Efficient Tandem Catalysis of Electrosynthesis of Ammonia from Nitrate Reduction Reaction in Neutral Medium DOI Open Access
Huilin Zhao, Pengfei Liu,

Xuetao Cheng

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 9, 2025

Abstract Electrochemical nitrate reduction to ammonia (eNO 3 RR) in neutral conditions is an effective and sustainable method for production while treating pollution. Nevertheless, it still faces a great challenge due the complicated multiple proton‐coupled‐electron process eNO RR. Herein, efficient heterostructure electrocatalyst Cu‐Cu 2 O/Ni P has been successfully fabricated electrosynthesis from reduction. exhibits outstanding RR performance with Faradaic efficiency (FE) as high 96.4% yield rate of 14636 µg·h −1 ·cm −2 at −1.0 V (vs RHE) 0.1 m PBS solution, which outperforms most reported electrocatalysts media. More importantly, catalyst demonstrates exceptional stability 30 consecutive electrolysis cycles durability even large current density 440 mA cm flow cell. The tandem catalysis mechanism NO − → NH by synergism two components O Ni verified experimental theoretical calculations. strong adsorption capacity can be reduced into , facilitate water splitting, promotes abundant *H production, thus boosting subsequent hydrogenation during whilst inhibiting competitive hydrogen evolution reaction (HER).

Язык: Английский

Процитировано

0

Electrodeposited P‐Doped CuNi Alloy from Deep Eutectic Solvent for Efficient and Selective Nitrate‐to‐Ammonia Electroreduction DOI Open Access
Shuling Liu, Yangsen Cao, Lin Yang

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 7, 2025

Electrochemical nitrate reduction reaction (NO3RR) offers a promising alternative for ammonia production using electricity generated from renewable energy sources. Active electrocatalysts with high selectivity and yield are required to selectively catalyze NO3RR ammonia. Here, P-doped Cu0.51Ni0.49 alloy thin films electrodeposited deep eutectic solvent of choline chloride-ethylene glycol (ChCl/EG). The P-Cu0.51Ni0.49 produces 1616.94 µg h-1 cm-2 at -0.55 VRHE (V versus reversible hydrogen electrode), Faradaic efficiency 98.38% 97.84% -0.25 VRHE, much better than the P-Ni P-Cu prepared under similar condition. rate, originated number electrochemically active sites more facile kinetics. Mechanistic study density functional theory calculation proves that exhibits higher conductivity NO3 - adsorption compared P-Cu, induced by electron interaction. Characterizations after cycling show crystallinity decreases, content divalent metal ions increases surface. is an stable material electrocatalyze in neutral aqueous solutions.

Язык: Английский

Процитировано

0

Electrocatalytic reduction of nitrate into ammonia by bimetallic copper‑nickel catalysts DOI
Qiliang Wang, Yi Shen

Journal of Electroanalytical Chemistry, Год журнала: 2025, Номер unknown, С. 119110 - 119110

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0