A nature inspired molecular Ni-catalyst for efficient photocatalytic CO2 reduction to CO under visible light

• 来源期刊: 中国科学：化学（英文版）
• 年，卷（期）: 2020,（12）
• 所属期刊栏目: COMMUNICATIONS
• 页码范围: 1716-1720
• 页数: 5页
• 语种: 英文

摘要

Development of efficient molecular catalysts for photocatalytic CO2 reduction is desirable but challenging.At present,the majority of reported molecular catalysts consist of the transition metal centers coordinated by N-containing ligands.Inspired by the sulfur-containing active site found in carbon monoxide dehydrogenases,we here report a novel Ni-based molecular catalyst bearing 2,6-bis([(2-pyridinylmethyl)thio]methyl) pyridine) as the pentadentate ligand.The product is assessed for photocatalytic CO2 reduction in acetonitrile/water solution using Ru(bpy)3Cl2 as the photosensitizer and triethanolamine as the electron donor.Under the optimal condition,a total of ca.25 μmol CO is produced after 7 h visible light irradiation with a large turnover number of 63 and high selectivity of 91％.