Promoting Electroreduction of CO 2 and NO 3 − to Urea via Tandem Catalysis of Zn Single Atoms and In 2 O 3‐x
Lanzhou Jiaotong University · University of Science and Technology Beijing · +1 more institution
Abstract
Abstract Urea electrosynthesis from co‐electrolysis of CO 2 and NO 3 − (UECN) offers an innovative route for converting waste CO 2 /NO 3 − into valuable urea. Herein, Zn single atoms anchored on oxygen vacancy (OV)‐rich In 2 O 3‐x (Zn 1 /In 2 O 3‐x ) are developed as a highly active and selective UECN catalyst, delivering the highest urea yield rate of 41.6 mmol h −1 g −1 and urea‐Faradaic efficiency of 55.8% at −0.7 V in flow cell, superior to most previously reported UECN catalysts. In situ spectroscopic measurements and theoretical calculations unveil the synergy of In/Zn 1 sites and OVs in promoting the UECN process via a tandem catalysis mechanism, where Zn 1 ‐OV site activates NO 3 − to form * NH 2 while…
Citation impact
- FWCI
- 11.54
- Percentile
- 100%
- References
- 46
Authors
7Topics & keywords
- Materials science
- Catalysis
- Tandem
- Urea
- Inorganic chemistry
- Physical chemistry
- Chemistry
- Organic chemistry