Modifying Microenvironment in Van der Waals Gap by Cu/N Co-Doping Strategy for Highly Efficient Nitrite Reduction to Ammonia.

Electroreduction of nitrite to ammonia has significant promise for economical NH electrosynthesis and wastewater treatment. Herein, sulfur vacancies rich Cu─N co-doped SnS nanosheet is designed as a highly active and durable NORR catalyst. Benefiting from the Cu─N co-doped strategy, Cu/N-SnS achieves the highest NH yield rate of 18.