Title：Polymeric Heterogeneous Water Oxidation Catalysts with Molecular Cobalt Sites

Speaker：Hao Yang，Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm 10044, Sweden.

Time：10:00-11:30, Friday, Jan 6th, 2023

Host:Prof. Licheng Sun, Director of the CAP for Solar Fuels

Address：Meeting room 244, Building E5, Yungu Campus

Online: Tencent Meeting ID  217-379-830

Hao Yang

Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm 10044, Sweden.

Biography：

Hao Yang is a PhD candidate in the department of Chemistry, KTH Royal Institute of Technology. He received a bachelor's degree from China University of Petroleum (East China) in 2016, and a master’s degree from Dalian University of Technology in 2019.

Abstract：

Solar energy could be transformed into electricity via solar photovoltaics or stored in the form of chemical bonds via artificial photosynthesis. Inspired by nature, solar fuel production by splitting water into hydrogen and oxygen is a promising strategy to store solar energy into chemical bonds. The water oxidation reaction is hampered by the complex removal of four electrons from two water molecules, the breaking of OH bonds, and the energy-intensive O-O bond formation. An in-depth understanding of the water oxidation mechanism and the structure-function relationship of the catalyst is indispensable for developing advanced catalytic systems. Therefore, looking for a catalytic system that can provide definite coordination environments for the formation of structurally defined transition metal active sites is crucial for the reliable mechanistic studies of heterogeneous water oxidation.This seminar will focus on the design of novel heterogeneous water oxidation catalysts with defined structures. The molecular cobalt sites grafted polymeric organic ligand/framework show promising water oxidation activities in neutral/alkaline electrolytes. Applying multiple reaction kinetic research methods allows us to understand the electrochemical behavior of cobalt sites and discover the reaction mechanisms underlying their high activity. Our results provide prospective insights into the design and mechanism of high-performance catalysts for water oxidation catalysis under neutral and basic conditions.

Contact:

Linli Xiang，Email：xianglinli@westlake.edu.cn