演讲人Speaker：段乐乐 （DuanLele）

题目Title: 过渡金属配合物催化水氧化和二氧化碳还原 (Transition metal complexes for water oxidation and carbon dioxide reduction)

时间Date：2019年3月21日Time： 10：00

地点Venue：T4栋402室

内容摘要Abstract：Artificial photosynthesis is one of the techniques that may lead to a sustainable energy system for our society. The oxidation of water (H2O ® 1/2 O2 + 2 H+ + 2 e-) generates protons and electrons which are essential starting maters for many reduction reactions, such as CO2 reduction (e.g. CO2 + 6 H+ + 6 e– ® CH3OH + H2O). These reactions are very much energy demanding and difficult to catalyze due to the involvement of the multiple proton-electron transfer and several bond cleavage/formation steps. In this talk, I will show a family of highly active [Ru(bda)L2] (H2bda = 2,2¢-bipyridine-6,6¢-dicarboxylic acid, L = pyridine-based ligands) water oxidation catalysts with turnover frequencies up to 300 per second, and a Mn-NHC carbene complex for CO2 reduction to CO.Detailed mechanistic studies, involving the use of stopped-flow UV-vis, electrochemistry, IR and the X-ray crystallography, will be discussed. 

个人简介(About the speaker):LeleDuanreceived his Ph.D. degree under the supervision of professor Licheng Sun at KTH Royal Institute of Technology in 2011 and then started his postdoctoral career in the same group. Later in 2013, he joined in the Etsuko Fujita group at Brookhaven National Laboratory. He became associate professor of Inorganic Chemistry at the SUSTech in 2017. His main research interests focus on the development of artificial photosynthetic systems for fuel production, including the synthesis of transition metal complexes for small molecule activation and electrocatalysis as well as the development of 2D materials for energy conversion and storage. He has published more than 40 peer reviewed scientific papers in international journals like Nature Chemsitry, JACS, PNAS etc. His work has been well cited with an H-index 28.