Issue 18, 2023

Recent developments and prospects for engineering first-row transition metal-based catalysts for electrocatalytic NOx reduction to ammonia

Abstract

Immense interest in the electrocatalytic reduction of nitrate (NO3)/nitrite (NO2) to ammonia has been driven by promising prospects as an eco-friendly and energy-efficient approach for wastewater treatment and ammonia synthesis. Currently, a variety of transition metal-based catalysts have been developed, but these still suffer from inferior selectivity and low energy conversion efficiency. Among diverse transition metal-based catalysts, first-row transition metal-based catalysts exhibit the advantages of suitable adsorption energies for NOx species and high abundance. As a consequence, this review firstly discusses the reaction mechanisms and hurdles for reaching high-efficiency NH3 production and analyses the principles for constructing superior NOx reduction catalysts. Then, the focus of this review is placed on recent advances in first-row transition metal-based electrocatalysts, including Cu, Fe, Co, Ni, Ti-based electrocatalysts, for electrochemical NO3/NO2 reduction. Finally, the challenges and opportunities are highlighted for future studies and applications. This review provides novel perspectives and ideas for developing first-row transition metal-based NOx reduction electrocatalysts.

Graphical abstract: Recent developments and prospects for engineering first-row transition metal-based catalysts for electrocatalytic NOx− reduction to ammonia

Article information

Article type
Review Article
Submitted
13 jun 2023
Accepted
14 jul 2023
First published
19 jul 2023

Inorg. Chem. Front., 2023,10, 5225-5243

Recent developments and prospects for engineering first-row transition metal-based catalysts for electrocatalytic NOx reduction to ammonia

Y. Feng, L. Chen and Z. Yuan, Inorg. Chem. Front., 2023, 10, 5225 DOI: 10.1039/D3QI01113E

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