Fe-Doped BiOCl Nanosheets with Light-Switchable Oxygen Vacancies for Photocatalytic Nitrogen Fixation

Since photocatalytic N 2 to NH 3 is a kinetically complex and multielectron reaction, designing efficient materials to fix N 2 is highly essential. Herein, we reported that simultaneously introducing oxygen vacancy and doping Fe into BiOCl nanosheets (NSs) can greatly boost the photocatalytic N 2 fixation. BiOCl NSs-Fe-5% exhibit the maximum NH 3 generation rate of 1.022 mmol g –1 h –1 and durable stability after successive cycling, being one of the best photocatalysts for N 2 fixation. This work demonstrates a promising strategy to design efficient photocatalysts for N 2 fixation, holding great significance for extensions to other material systems.