A TiO2/Fe heterostructure enables high-efficiency electrochemical ammonia synthesis from nitrate

Yushuang Gong; Xiaojuan Zhu; Leyang Song; Zehua Wang; Jing Wang; Xiang Liu; Shiling Yuan; An-Liang Wang

doi:10.1039/D5CC01835H

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A TiO₂/Fe heterostructure enables high-efficiency electrochemical ammonia synthesis from nitrate†

Yushuang Gong,^a Xiaojuan Zhu,^a Leyang Song,^a Zehua Wang,^a Jing Wang,^a Xiang Liu,^a Shiling Yuan^a and An-Liang Wang

*^a

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* Corresponding authors

^a Key Laboratory for Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong, China
E-mail: alwang@sdu.edu.cn

Abstract

The rational design of heterostructures offers a powerful strategy to enhance the performance towards nitrate (NO₃⁻) reduction to ammonia (NRA). In this work, we successfully constructed a TiO₂/Fe heterostructure by anchoring Fe nanoparticles onto TiO₂ nanorod arrays, which achieves an impressive Faradaic efficiency of 93.3% and a high NH₃ yield rate of 11.96 mg h⁻¹ cm⁻². Mechanistic studies reveal that the TiO₂/Fe heterostructure effectively enhances NO₃⁻ adsorption, facilitates the dissociation of H₂O for generating more active hydrogen, and lowers the energy barrier. This work provides valuable insights into the design of advanced heterostructure catalysts for NRA.

This article is part of the themed collection: Chemistry at the Forefront of the Sustainable Energy Transition

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Article information

DOI: https://doi.org/10.1039/D5CC01835H
Article type: Communication
Submitted: 01 apr 2025
Accepted: 04 jun 2025
First published: 05 jun 2025

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Chem. Commun., 2025, Advance Article

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A TiO₂/Fe heterostructure enables high-efficiency electrochemical ammonia synthesis from nitrate

Y. Gong, X. Zhu, L. Song, Z. Wang, J. Wang, X. Liu, S. Yuan and A. Wang, Chem. Commun., 2025, Advance Article , DOI: 10.1039/D5CC01835H

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