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Updated: May 7, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
All-solid-state mechanochemical synthesis of Cu2+-doped MIL-53(Fe) for high-efficient nitrate electroreduction to
Wang Zhang1, Tianci Feng1, Shiqi Li1,2
1College of Materials Science and Engineering, College of Environment, Zhejiang Key Laboratory of Low-carbon Control Technology for Industrial Pollution, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China.
Abstract:
Electrocatalytic nitrate reduction has emerged as a promising strategy for sustainable ammonia synthesis, providing the dual advantage of mitigating nitrate pollution and producing value-added green ammonia. However, enhancing intrinsic catalytic activity and catalytic site accessibility remains a challenge for further improving the performance of nitrate electroreduction to ammonia. Herein, a series of gradient Cu2+-doped MIL-53(Fe) electrocatalysts were synthesized via an all-solid-state mechanochemical synthesis method for electrocatalytic nitrate-to-ammonia conversion. MIL-53(Fe)-CuB exhibits a large NH3production rate of 2391 ± 327μg h-1mgcat-1at -0.6 V vs RHE and a high Faradaic efficiency of 82.1% ± 1.2% at -0.3 V vs RHE in 1 M KOH with 100 ppm NO3-, demonstrating an excellent electrocatalytic performance for nitrate reduction. This work reveals that Cu2+-doping in mechanochemically synthesized Fe-metal-organic frameworks (MOFs) boosts nitrate reduction efficiency and selectivity, while broadening research on foreign metal ion anchoring in MOF electrocatalysis.
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