首页|Ambient electrocatalytic synthesis of urea by co-reduction of NO3-and CO2 over graphene-supported In2O3
Ambient electrocatalytic synthesis of urea by co-reduction of NO3-and CO2 over graphene-supported In2O3
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Urea plays a vital role in the sustainable development of mankind as it is one of the most important nitrogen fertilizers.Conventional synthesis of urea is accompanied by a high level of energy consumption while electrocatalytic methods suffer from low yields and poor selectivity.Our work achieves efficient synthesis of urea by designing the graphene-In2O3 electrocatalysts for the co-activated reduction of ni-trate and carbon dioxide,where the formation rate of urea,Faraday efficiency(FE)and carbon selectivity at-0.35 V vs.RHE can reach 357.47 μg mg-1 h-1,10.46％and～100％,respectively.Herein,the key interme-diates in the C-N coupling reaction are demonstrated to be*NH2 and*CO2,which is of novelty compared to previous reports.This work may provide inspiration for subsequent studies on the reaction mechanism of the electrochemical synthesis of urea,as well as theoretical guidance for the sustainable synthesis of some other important chemical substances.
Yini Mao、Yong Jiang、Hao Liu、Yimin Jiang、Ming Li、Wei Su、Rongxing He
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Key Laboratory of Luminescence Analysis and Molecular Sensing(Southwest University),Ministry of Education,College of Chemistry and Chemical Engineering,Southwest University,Chongqing 400715,China
Key Laboratory of Beibu Gulf Environment Change and Resources Utilization(Nanning Normal University),Ministry of Education,College of Chemistry and Life Science,Nanning Normal University,Nanning 530000,China
国家自然科学基金Chongqing Municipal Natural Science Foundation重庆市高等学校创新团队建设计划
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