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Updated: Jun 5, 2025

Author Spotlight: A Rapid, Microwave-Assisted Hydrothermal Synthesis Of Nickel Hydroxide Nanosheets
Published on: August 18, 2023
Selective urea electrosynthesis via nitrate and CO2 reduction on uncoordinated Zn nanosheets
Xiaomiao Wang1, Fengyu Zhang1, Haixin Zhang2
1College of Science, Hebei North University, Zhangjiakou 075000, Hebei, China. wxm2528371110@163.com.
Abstract:
Electroreduction of NO3- and CO2 to urea (ENCU) represents a fascinating strategy to enable waste NO3-/CO2 removal and sustainable urea production. Herein, uncoordinated Zn nanosheets (U-Zn) are developed as a highly selective ENCU catalyst, exhibiting the highest urea-faradaic efficiency of 31.8% with the corresponding urea yield rate of 39.3 mmol h-1 g-1 in a flow cell. Theoretical calculations and electrochemical spectroscopic measurements reveal that the high ENCU performance of U-Zn arises from the critical role of uncoordinated Zn sites that can promote both key steps of *NO2/CO2 coupling and *CO2NH2 protonation to *COOHNH2, while retarding the competitive side reactions.
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