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Updated: Aug 2, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Efficient electrocatalytic reduction of nitrate to ammonia over fibrous SmCoO3 under ambient conditions
Peiji Hu1, Songjie Hu1, Hongting Du1
1School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan, China. litingshuai@uestc.edu.cn.
Abstract:
We report SmCoO3 nanofibers as an efficient catalyst for nitrate reduction to ammonia. This catalyst achieves a large NH3 yield of 14.4 mg h-1 mgcat.-1 and a high faradaic efficiency of 81.3% at -1.0 V vs. RHE in 0.1 M PBS with 0.1 M NaNO3, and it also displays excellent electrochemical durability and structural stability. Theoretical calculations indicate that Sm-O and Co-O bonds have an incredibly low adsorption energy of -0.1 eV, which can significantly reduce the applied potential and hence enhance the catalytic activity.
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