A Bio‐Inspired Dendritic MoO_x Electrocatalyst for Efficient Electrochemical Nitrate Reduction to Ammonia

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

Published: July 24, 2024

Abstract Drawing inspiration from the nitrate reductase enzymes, which catalyze to nitrite in nature, here a bio‐inspired, reduced molybdenum oxide (MoO x ) shell is introduced that grown on top of dendritic nickel foam core (Ni NF ). The resulting MoO /Ni material prepared via facile, two‐step electrodeposition strategy using commercially available, low‐cost precursors. This catalytic displays remarkable faradaic efficiency (FE) 99% at −0.5 V versus RHE and high ammonia (NH 3 yield rate up 4.29 mmol h −1 cm −2 −1.0 neutral media. Most importantly, exhibits exceptional stability for reduction reaction (NO RR), maintaining operation over 3100 current density −650 mA , with 2.6 stable average NH FE ≈83%. Through combined XPS situ Raman spectroscopy it shown pronounced affinity associated substantial presence oxygen vacancies within material.

Language: Английский

Advances in Electrocatalytic Nitrate Reduction: Insights into Mechanisms and Reaction Optimization

Advanced Sustainable Systems, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 20, 2025

Abstract Electrocatalytic nitrate reduction (NO 3 RR) offers a promising approach to address pollution by converting harmful nitrates into environment‐benign or valuable products like nitrogen gas (N 2 ) ammonia (NH ). This review explores the mechanisms, challenges, and catalysts involved in NO RR, highlighting role of catalyst selectivity, stability, external reaction conditions. The discussion also covers environmental economic benefits RR for water treatment, alongside potential future directions scaling‐up, system integration, expanding research tackling related nitrogen‐based pollutants as well real world applications.

Language: Английский

Rational design on Cu-based electrochemical catalyst for efficient green ammonia production from nitrate: A review

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 117055 - 117055

Published: May 1, 2025

Language: Английский