Enhanced Nitrate Reduction Performance of Cu-Doped Nanoporous Co<sub>2</sub>P Electrocatalyst

Enhanced Nitrate Reduction Performance of Cu-Doped Nanoporous Co<sub>2</sub>P Electrocatalyst

Electrocatalytic nitrate reduction to ammonia (NO<sub>3</sub>RR) is a promising approach to recycle nitrogen from nitrate pollutants, yet it remains challenged by low Faradaic efficiency and insufficient NH<sub>3</sub> production. Herein, Cu-doped nanoporous Co<sub>2<...

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Bibliographic Details
Main Authors: Yunduo Huang, Xiechen Zhang, Yanqin Liang, Hui Jiang, Shuilin Wu, Zhaoyang Li, Zhenduo Cui, Shengli Zhu, Zhonghui Gao, Wence Xu
Format: Article
Language:English
Published: MDPI AG 2025-05-01
Series:Nanomaterials
Subjects:
dealloying
nanoporous materials
electrocatalysis
nitrate reduction reaction
Online Access:https://www.mdpi.com/2079-4991/15/10/753
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Summary:Electrocatalytic nitrate reduction to ammonia (NO<sub>3</sub>RR) is a promising approach to recycle nitrogen from nitrate pollutants, yet it remains challenged by low Faradaic efficiency and insufficient NH<sub>3</sub> production. Herein, Cu-doped nanoporous Co<sub>2</sub>P (np-Co<sub>2−x</sub>Cu<sub>x</sub>P) is reported as electrocatalyst for NO<sub>3</sub>RR, achieving an ammonia yield rate of 30.6 mg h<sup>−1</sup> cm<sup>−2</sup> with a Faradaic efficiency of 93.4% at −0.3 V vs. RHE. In-situ spectroscopic analyses indicate that Cu incorporation modifies the surface electronic structure, resulting in the promotion of *H adsorption and *NO<sub>2</sub><sup>−</sup> hydrogenation, thereby facilitating efficient ammonia generation.
ISSN:2079-4991

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