Urea electrooxidation often produces harmful cyanates and nitrites instead of N2, limiting its use in wastewater denitrification. Here, the authors develop an asymmetric Ni–O–Ti catalytic sites on Ti foam that reduce these byproducts, achieve 99% N2 selectivity, and boost H2 evolution.
- Guangming Zhan
- Lufa Hu
- Lizhi Zhang