Carbon dioxide and nitrate co-electroreduction to urea on CuOxZnOy

被引：27

作者：

Anastasiadou, Dimitra ^{[1
]}

Ligt, Bianca ^{[1
]}

He, Yunyang ^{[1
]}

van de Poll, Rim C. J. ^{[1
]}

Simons, Jerome F. M. ^{[1
]}

Figueiredo, Marta Costa ^{[1
,2
]}

机构：

[1] Eindhoven Univ Technol, Dept Chem Engn & Chem, POB 513, NL-5600 MB Eindhoven, Netherlands

[2] Eindhoven Univ Technol, Eindhoven Inst Renewable Energy Syst EIRES, POB 513, NL-5600 MB Eindhoven, Netherlands

来源：

COMMUNICATIONS CHEMISTRY | 2023年 / 6卷 / 01期

基金：

荷兰研究理事会;

关键词：

ELECTROCHEMICAL SYNTHESIS; SIMULTANEOUS REDUCTION; COPPER OXIDATION; INITIAL-STAGE; NITRITE IONS; OXIDES; ZNO; CUO;

D O I：

10.1038/s42004-023-01001-5

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Urea is a commonly used nitrogen fertiliser synthesised from ammonia and carbon dioxide using thermal catalysis. This process results in high carbon dioxide emissions associated with the required amounts of ammonia. Electrocatalysis provides an alternative method to urea production with reduced carbon emissions while utilising waste products like nitrate. This manuscript reports on urea synthesis from the electroreduction of nitrate and carbon dioxide using CuOxZnOy electrodes under mild conditions. Catalysts with different ratios of CuO and ZnO, synthesised via flame spray pyrolysis, were explored for the reaction. The results revealed that all the CuOxZnOy electrocatalyst compositions produce urea, but the efficiency strongly depends on the metal ratio composition of the catalysts. The CuO50ZnO50 composition had the best performance in terms of selectivity (41% at -0.8 V vs RHE) and activity (0.27 mA/cm(2) at -0.8 V vs RHE) towards urea production. Thus, this material is one of the most efficient electrocatalysts for urea production reported so far. This study systematically evaluates bimetallic catalysts with varying compositions for urea synthesis from carbon dioxide and nitrate.

引用

页数：8

共 41 条

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