 Insoluble CW11PHA at delta by 203 with a core shell structure and Z-scheme heterojunction is constructed under solvothermal conditions to improve nitrogen fixation which is regarded as a sustainable strategy for generating low concentration NH3 slash NH4+. The RU-BPY-3, 2 plus counter ion in the composite acts as a photosensitizer leading to improved light harvesting. The performance of nitrogen reduction depends mainly on its volume ratio in mixture feedstock and reducing the latter one appropriately favors nitrogen reduction when using air as feedstock. This article was authored by Ping Yang, Ruixiu Zhao, Jichun Lu and others.