报 告 人：刘彬 教授
报告题目：Electrochemical CO2 Reduction Chemistry over Model Single-Atom Catalyst
报告时间：2022年11月15日（星期二） 14: 30
腾讯会议号：113 194 435
Bin Liu received his B.Eng. (1st Class Honors) and M.Eng. degrees in Chemical Engineering from the National University of Singapore in 2002 and 2004, and obtained his Ph.D. degree in Chemical Engineering from University of Minnesota in 2011. Thereafter, he moved to University of California, Berkeley and worked as a postdoctoral researcher in the Department of Chemistry during 2011 – 2012 before joining School of Chemical and Biomedical Engineering at Nanyang Technological University (NTU) as an Assistant Professor in 2012. He is now an Associate Professor at NTU. He was listed among the “Highly Cited Researchers” in Cross-Field in 2019 and Chemistry in 2020 and 2021 by Clarivate. His main research interests include electrocatalysis, in situ/operando characterization, photovoltaics and photoelectrochemistry. More information can be found at http://www.ntu.edu.sg/home/liubin/home.html.
Noble-metal and transition-metal based materials have been demonstrated as promising catalysts for selective electrochemical CO2 reduction reaction (CO2RR), however, neither the detailed structures of catalytic intermediates nor the key surface species have been unambiguously identified. In this work, a series of single transition-metal atom catalysts with well-defined structures were developed as model systems to explore the electrochemical CO2RR chemistry. Employing a combination of operando X-ray absorption spectroscopy, attenuated total reflectance surface enhanced infrared absorption spectroscopy, Raman spectroscopy and Mössbauer spectroscopy, we successfully captured the dynamic evolution of the catalytic centers during the CO2RR process.