Issue 24, 2024

Photocatalytic NOx removal and recovery: progress, challenges and future perspectives

Abstract

The excessive production of nitrogen oxides (NOx) from energy production, agricultural activities, transportation, and other human activities remains a pressing issue in atmospheric environment management. NOx serves both as a significant pollutant and a potential feedstock for energy carriers. Photocatalytic technology for NOx removal and recovery has received widespread attention and has experienced rapid development in recent years owing to its environmental friendliness, mild reaction conditions, and high efficiency. This review systematically summarizes the recent advances in photocatalytic removal, encompassing NOx oxidation removal (including single and synergistic removal and NO3 decomposition), NOx reduction to N2, and the emergent NOx upcycling into green ammonia. Special focus is given to the molecular understanding of the interfacial nitrogen-associated reaction mechanisms and their regulation pathways. Finally, the status and the challenges of photocatalytic NOx removal and recovery are critically discussed and future outlooks are proposed for their potential practical application.

Graphical abstract: Photocatalytic NOx removal and recovery: progress, challenges and future perspectives

Article information

Article type
Review Article
Submitted
21 Mar 2024
Accepted
18 May 2024
First published
20 May 2024
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2024,15, 9026-9046

Photocatalytic NOx removal and recovery: progress, challenges and future perspectives

T. Xue, J. Li, L. Chen, K. Li, Y. Hua, Y. Yang and F. Dong, Chem. Sci., 2024, 15, 9026 DOI: 10.1039/D4SC01891E

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