Surface engineering on bulk Cu2O for efficient electrosynthesis of urea

被引：5

作者：

Dai, Zechuan ^{[1
]}

Chen, Yanxu ^{[1
]}

Zhang, Huaikun ^{[1
]}

Cheng, Mingyu ^{[1
]}

Zhang, Bocheng ^{[1
]}

Feng, Pingyi ^{[1
]}

Feng, Yafei ^{[1
]}

Zhang, Genqiang ^{[1
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Res Ctr Phys Sci Microscale, CAS Key Lab Mat Energy Convers, Dept Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China

来源：

NATURE COMMUNICATIONS | 2025年 / 16卷 / 01期

基金：

中国国家自然科学基金;

关键词：

WATER;

D O I：

10.1038/s41467-025-57708-7

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Electrochemical urea synthesis has recently emerged as a fascinating energy-efficient alternative route, while it remains challenging to achieve simultaneously high production rate and Faradaic efficiency. Herein, we realize an energy-favorable electrochemical C-N coupling path through CO2 and NO3- co-reduction at the heterointerfaces of Cu/Cu2O microparticles, generated by in-situ electrochemical engineering on bulk Cu2O. We achieve urea production rate of 632.1 mu g h-1mgcat.-1 with a corresponding Faradaic efficiency of 42.3% at -0.3 V (versus RHE) under ambient conditions. Operando synchrotron radiation-Fourier transform infrared spectroscopy, along with theoretical calculations, reveals the coupling of intermediates NOH* and CO* at the heterointerfaces, benefiting from the modified electronic structure. This work provides a practical route for catalyst design and insights into urea electrosynthesis systems.

引用

页数：13

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