Copper-Based Electrocatalysts for Nitrate Reduction to Ammonia

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Abstract

Ammonia (NH3) is a highly important industrial chemical used as fuel and fertilizer. The industrial synthesis of NH3 relies heavily on the Haber–Bosch route, which accounts for roughly 1.2% of global annual CO2 emissions. As an alternative route, the electrosynthesis of NH3 from nitrate anion (NO3−) reduction (NO3−RR) has drawn increasing attention, since NO3−RR from wastewater to produce NH3 can not only recycle waste into treasure but also alleviate the adverse effects of excessive NO3− contamination in the environment. This review presents contemporary views on the state of the art in electrocatalytic NO3− reduction over Cu-based nanostructured materials, discusses the merits of electrocatalytic performance, and summarizes current advances in the exploration of this technology using different strategies for nanostructured-material modification. The electrocatalytic mechanism of nitrate reduction is also reviewed here, especially with regard to copper-based catalysts.

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Fang, J. Y., Fan, J. L., Liu, S. B., Sun, S. P., & Lou, Y. Y. (2023, June 1). Copper-Based Electrocatalysts for Nitrate Reduction to Ammonia. Materials. MDPI. https://doi.org/10.3390/ma16114000

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