Under the pressure of a fossil fuels shortage and global climate change, solar ammonia synthesis and the need to develop N2fixation under mild conditions is becoming more urgent need;however, their intrinsic mechanisms still remain unclear. Herein, we demonstrate that the kinetic inertia of N2can be overcome using oxygen vacancies (OVs) of BiOCl as the catalytic centers to create lower energy molecular steps, which are amendable for the solar light driven N-N triple bond cleavage via a proton-assisted electron transfer pathway. Moreover, the distinct structures of OVs on different BiOCl facets...
