Engineering and Technology

Electrochemical nitrate reduction in acid enables high-efficiency ammonia synthesis and high-voltage pollutes-based fuel cells

R. Zhang, C. Li, et al.

This innovative research, conducted by Rong Zhang and colleagues, reveals the remarkable ability of TiO₂ nanosheets for rapid nitrate reduction to ammonia in acidic conditions. By hybridizing with iron phthalocyanine, they've developed a highly efficient catalyst, paving the way for advances in energy conversion and environmental recovery through an alkaline-acid hybrid Zn-nitrate battery.

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Abstract

This work demonstrates the potential of TiO₂ nanosheet for selective and rapid nitrate reduction to ammonia under acidic conditions. Hybridized with iron phthalocyanine, the resulting catalyst displays remarkably improved efficiency toward ammonia formation. An alkaline-acid hybrid Zn-nitrate battery was developed with high open-circuit voltage and power density. The environmental sulfur recovery can be powered by this battery, and a hydrazine-nitrate fuel cell can be developed for simultaneous hydrazine/nitrate conversion and electricity generation. This work highlights the potential of acidic nitrate reduction for ammonia electrosynthesis and energy conversion.

Publisher

Nature Communications

Published On

Dec 05, 2023

Authors

Rong Zhang, Chuan Li, Huilin Cui, Yanbo Wang, Shaoce Zhang, Pei Li, Yue Hou, Ying Guo, Guojin Liang, Zhaodong Huang, Chao Peng, Chunyi Zhi

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