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Updated: Apr 10, 2026

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
Construction of stable Cu-O-Fe bridging structure for highly efficient electrocatalytic nitrate reduction to ammonia
Zhengguo Qu1,2, Shengbo Zhang1,3, Jiheng Zhu3
1Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China. sbzhang@issp.ac.cn.
Abstract:
Electrocatalytic conversion of nitrate to high-value ammonia (NH3) using renewable energy holds great significance for industrial applications. Herein, we report a high-activity Cu-Fe dual-site nanoflower-like catalyst (CuFe-CF) fabricated via one-step electrodeposition on copper foam (CF), which exhibits outstanding performance for the nitrate reduction reaction (NtrRR). X-ray absorption spectroscopy (XAS) characterizations confirm that CuFe-CF possesses a stable Cu-O-Fe bridged electronic structure. Benefiting from this unique structure, CuFe-CF achieves a remarkable faradaic efficiency (FE) of 95.8 ± 1.0% for NH3 production at -0.6 V (vs. RHE), and an exceptional NH3 yield rate of 102.3 ± 0.3 mg h-1 cm-2 at -1.2 V (vs. RHE). This work provides new insights for designing high-performance catalysts for nitrate reduction to ammonia.

