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Updated: Sep 19, 2025

Electrochemically and Bioelectrochemically Induced Ammonium Recovery
Published on: January 22, 2015
A TiO2/Fe heterostructure enables high-efficiency electrochemical ammonia synthesis from nitrate
Yushuang Gong1, Xiaojuan Zhu1, Leyang Song1
1Key Laboratory for Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, Shandong, China. alwang@sdu.edu.cn.
None:
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.
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