Photocatalytic nitrogen fixation, the new generation of ammonia synthesis technology for clean energy-storage, has been widely studied. Low utilization rate of visible light and easy recombination of photogenerated carriers are the key problems in photocatalytic nitrogen fixation reaction. Supported Ru active sites can significantly improve the nitrogen fixation activity. Hollow spherical H-C₃N₄ also shows good nitrogen fixation activity potential. In this paper, we try to construct Ru@MOFs@H-C₃N₄ heterojunction and obtain photocatalyst with good photocatalytic activity. By comparing the activities with different catalysts, it was found that Ru@SH-MOF@H-C₃N₄ containing sulfhydryl MOF had better nitrogen fixation activity than Ru@OH-MOF@H-C₃N₄ containing hydroxyl MOF, and the structure–activity relationship for this phenomenon was elucidated.

光催化固氮作为新一代清洁能源合成氨技术已被广泛研究。可见光利用率低和光生载流子易复合是光催化固氮反应的关键问题。负载的Ru活性位点可以显着提高固氮活性。空心球形HC ₃ N ₄还表现出良好的固氮活性潜力。本文尝试构建Ru@MOFs@HC ₃ N ₄异质结并获得具有良好光催化活性的光催化剂。通过比较不同催化剂的活性，发现含巯基MOF的Ru@SH-MOF@HC ₃ N ₄比含羟基MOF的Ru@OH-MOF@HC ₃ N ₄具有更好的固氮活性，且结构-活性阐明了这一现象的关系。