报告题目：Uncovering Active Sites in Heterogeneous Catalysis by Probe-Molecule Spectroscopy on Oxides: The Role of Steps and a Caveat on Single-Atom Catalysis (SAC)

报告人：Christof Wöll

时 间：2026年10月27日（周二），9:00 – 10:00

地 点：化工学院210会议室

报告摘要：

Chemical energy storage and conversion are central challenges in the transition toward a sustainable carbon-neutral economy. Progress in this area requires heterogeneous catalysts capable of activating small molecules such as CO, CO₂, O₂, and H₂ under technologically relevant conditions. In this talk, we will discuss how probe-molecule spectroscopy, in particular polarization-resolved infrared spectroscopy using carbon monoxide (CO), can provide direct information on the geometric and electronic structure of oxide surfaces and supported metal atoms. Examples will be presented for well-defined oxide model systems including CeO₂, ZrO₂, and MgO, investigated under ultrahigh-vacuum as well as operando conditions. We will show how terrace sites, defects and low-coordinated surface atoms govern the activation of small molecules, and how the combination of probe-molecule spectroscopy, electronic-structure theory, AI-assisted analysis, and operando methodologies provides a powerful framework for uncovering the nature of active sites in heterogeneous catalysis.

报告人简介：

Christof Wöll，德国卡尔斯鲁厄理工学院（KIT）功能界面研究所所长、教授，德国科学院院士，鄂尔多斯实验室首席科学家。长期从事表面物理和表面化学研究，并在金属和金属氧化物表面科学、新型表面分析技术、自组装单层膜（SAMs）和表面配位金属-有机框架薄膜（SURMOFs）等领域取得了一系列创新成果。发表学术论文超650篇，引用超5.7万次，H因子124。曾荣获众多荣誉和奖项，包括马普学会Otto Hahn奖章、德国Bunsen物理化学会的van’t Hoff奖，南丹麦大学的荣誉博士学位（2019）等，并担任德国物理学会（DPG）表面物理分会发言人。