时间: 2025年9月4日（周四）下午16:00-17:30

Time: 16:00-17:30, Thursday, September 4th, 2025

主持人: 西湖大学理学院/人工光合作用与太阳能燃料中心PI 王涛博士

Host: Dr. Tao Wang, Pl of CAP for Solar Fuels and School of Science,Westlake University

地址：西湖大学云谷校区E10-201

Venue: Lecture Hall, E10-201, Yungu Campus, Westlake University

讲座语言：中文

Lecture Language: Chinese

Prof. Kai Wu (吴凯)

Peking University

主讲人/Speaker：

Dr. Kai Wu, Boya distinguished professor/Changjiang Distinguished Professor at Peking University (PKU), China, has been working in surface physical chemistry. He earned his B.S. degree in chemistry from Zhejiang University in 1987 and his PhD degree in physical chemistry in 1991 from Dalian Institute of Chemical Physics, CAS. Dr. Wu moved to Fritz-Haber-Institut der MPG, Germany, in 1995, to study electrochemistry, and to Pacific Northwest National Laboratory, USA, in 1998, to investigate ion chemistry. In 2000, Dr. Wu became a full professor at College of Chemistry and Molecular Engineering (CCME), PKU. During 2003-2015, he served as Director of Institute of Physical Chemistry, Vice Dean and Dean of CCME, PKU. Dr. Wu is the founding Editor-in-Chief of Advanced Scientific Instruments and has been serving on editorial/advisory boards of several prestigious journals. He is also the leading PI/expert of several major research projects, NSFC, China. Up to date, Dr. Wu has published more than 200 papers and delivered over 100 plenary/keynote/invited talks worldwide.

讲座摘要/Abstract:

Practical heterogeneous catalytic systems are so complex that people have long employed model catalytic systems to explore the catalytic principles from the perspectives of catalyst surface and reactive molecules, which could help develop practical catalytic systems. To this goal, one has to design and prepare a model catalyst with a controllable structure, and then scrutinize the elementary processes of surface catalytic reactions at the atomic and molecular levels. Since the specific surface free energy of a bulk oxide is much lower than that of metal atoms or clusters, one can play the game by reducing the thickness of the oxide film, even down to one atomic monolayer, which is grown on a bulk metal substrate. As such, the chemical potential of the oxide thin film can be tweaked by the underlying bulk metal substrate. Once the chemical potential of the ultrathin oxide support becomes comparable with those of the metal atoms, can one then stabilize these metal atoms or clusters without additional measures. Such an approach may be termed as surface chemical potential strategy to prepare uncoordinated metal atoms or clusters at surfaces. In this presentation, several model catalytic systems including transition metal atoms or clusters supported on monolayered metallic oxides and ultrathin films like few-layered carbides grown on bulk metal substrates and even bulk metal single crystals are exploited for CO oxidation, CO₂ dissociation, ethylene polymerization and selective cleavage of α‑olefins as well. Hopefully these studies could help advance our understanding of practical catalytic systems.

讲座联系人/Contact:

CAP for Solar Fuels and School of Science, Lu Liu, Email: liulu@westlake.edu.cn