The Development, Essence and Perspective of Nitrogen Reduction to Ammonia

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

Published: Nov. 12, 2024

Ammonia plays a pivotal role in agriculture and meanwhile holds promising potential as an energy vector for the hydrogen economy, where nitrogen reduction to ammonia is critical pathway achieving sustainable development. Over past hundred years, synthesis has undergone several breakthrough developments from Haber-Bosch process photo/electro-catalysis Li-mediated strategy, but still faces challenges of low yield rate, selectivity efficiency. Therefore, there pressing demand develop efficient green nitrogen. This review summarizes development ammonia, highlighting six milestones during whole journey. From direction, this work finds extracts essence synthesis, that reaction pathways are affected by barrier intermediates, which can be altered proton sources, auxiliaries catalysts. Then discusses detailed overview significant source, Finally, based on essence, possible opportunities presented, including design new The deep insight will provide guidance synthesis.

Language: Английский

---

Electrochemical Insights into Hydrogen Peroxide Generation on Carbon Electrodes: Influence of Defects, Oxygen Functional Groups, and Alkali Metals in the Electrolyte

ACS Catalysis, Journal Year: 2024, Volume and Issue: unknown, P. 17675 - 17689

Published: Nov. 15, 2024

Hydrogen peroxide (H2O2) is an environmentally friendly oxidant, with production reaching 5.7 million tons by 2028 and a market size of USD 4.04 billion 2029. Understanding the mechanism oxygen reduction to H2O2 structure–activity relations on carbon materials is, therefore, high significance for more synthesis this important chemical. We have used oriented pyrolytic graphite (PG-edge PG-basal) glassy (GC) as model electrodes investigate influence defects, oxygen-containing functional groups, presence alkali metals activity selectivity toward under acidic conditions. Electrochemical measurements, such rotating ring disk electrode electrochemical impedance spectroscopy, well in situ Raman spectroelectrochemistry indicated that PG-basal GC preferentially form product through two-electron pathway via inner outer sphere mechanisms, respectively. The significantly affected potential maximal entropy, which determines position species solution within or Helmholtz plane. cations (Li+, Na+, K+, Cs+) reaction these was investigated. Large cations, e.g., K+ Cs+, showed intermediates thus electrodes' selectivity. present study provides insights contributions fundamental aspects hydrogen conditions further advancements development metal-free carbon-based catalysts.

Language: Английский

---

MAX-derived B-doped Mo_1.33C MXene for ambient electrocatalytic conversion of nitrate to ammonia

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(29), P. 18082 - 18088

Published: Jan. 1, 2024

We propose a defect-rich Mo 1.33 C 0.9 B 0.1 MXene electrocatalyst, where the synergistic effect between high-valence sites and empty-orbital-rich dopant boosts nitrate adsorption, accelerating multiple-electron transfer dynamics.

Language: Английский

---

Inorganic crystal-supported precious metal single-atom catalysts for photo/electrocatalysis

Nano Energy, Journal Year: 2024, Volume and Issue: 128, P. 109869 - 109869

Published: June 7, 2024

Language: Английский

---

Metal nitrides as electrocatalysts in green ammonia synthesis

Applied Physics A, Journal Year: 2024, Volume and Issue: 130(10)

Published: Oct. 1, 2024

Language: Английский

---