Self-sacrificed BiOBr template-assisted synthesis of α-BiO/BiOBr heterojunctions with oxygen vacancies for enhanced photocatalytic nitrogen fixation.

The catalytic conversion of nitrogen to ammonia is one of the most significant processes in nature and the chemical industry. However, the traditional Haber-Bosch process of ammonia synthesis consumes substantial energy and emits a large amount of carbon dioxide. The efficiency of photocatalytic N activation is severely limited by the lack of N adsorption sites and poor carrier utilization.