Abstract A bridged binuclear complex consisting of two ruthenium units (Ru–Ru) connected through a bridging ligand was synthesized, in which one unit serves as a photosensitizer, while another unit works as a catalyst. The synthesized Ru–Ru photocatalyst was tested for photoreduction of CO2 to give CO and HCOOH under visible light irradiation in the presence of triethanolamine as a sacrificial donor. The yield of CO and HCOOH was found to be 54 ppm and 28 ppm respectively after 12 h of irradiation. Due to the binding of photosensitizer and catalyst units in a single molecule via bridging ligand provides faster and efficient electron transfer from sensitizer to catalyst unit which resulted in the higher activity and better product yields.

中文翻译：

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用于在可见光照射下光还原 CO 2 的桥接钌二聚体 (Ru-Ru)

摘要 合成了由两个钌单元（Ru-Ru）通过桥接配体连接而成的桥接双核配合物，其中一个单元作为光敏剂，另一个单元作为催化剂。在三乙醇胺作为牺牲供体的情况下，在可见光照射下测试合成的 Ru-Ru 光催化剂对 CO2 的光还原以产生 CO 和 HCOOH。在照射 12 小时后发现 CO 和 HCOOH 的产率分别为 54 ppm 和 28 ppm。由于光敏剂和催化剂单元通过桥连配体在单个分子中结合，提供了从敏化剂到催化剂单元的更快和有效的电子转移，从而导致更高的活性和更好的产品产率。