题目：Diamond Chemistry

报告人：Nianjun Yang

Department of Chemistry & IMO-IMOMEC, Hasselt University

报告时间：2025年4月9日（周三）上午10:00

报告地点：超硬实验综合楼5楼A514会议室

Abstract: Diamond, a sp³-carbon hybrid material, belongs to a wide bandgap semiconductor. Stemming from its excellent physical and chemical properties, it has been known to be perfect for various mechanical, optical, thermal, and electronic applications. In addition to traditional high temperature/high pressure method, the realization of the low-pressure chemical vapor deposition (CVD) of diamond triggered novel aspects of diamond research in laboratories and in industries all over the world. Particularly, the CVD-grown diamond films can become electrically conductive when they are heavily doped with boron. For example, boron-doped diamond films possess wide potential windows, low background currents, and long stability. They are therefore recognized as one of the perfect electrodes in the fields of electroanalysis, electrochemical energy storage and conversion, pollution degradation, electrosynthesis, electrochemical biosensing, to name just a few. In this presentation, the progress and achievements of conductive diamond films and their composites obtained in our group will be shared. Focusing on chemistry of diamond, this talk will start from the CVD growth of diamond materials (plasma chemistry), followed by the demonstration of unique chemical features of diamond materials (surface chemistry). Electrochemistry of diamond materials will be highlighted, mainly covering their applications in the field of biosensing (e.g., protein, DNA), electrochemical energy storage (e.g., supercapacitors, batteries), and recent electrochemical energy conversion (e.g., electrocatalysis) will be shown. The future research directions of diamond chemistry will be outlined and discussed.

Biography: Dr. Nianjun Yang has been a Professor of Electrochemistry and Catalysis at the Department of Chemistry and Institute of Materials Research (IMO-IMOEC) of Hasselt University (Belgium) since March 2023. His research interest covers design, synthesis, and electrochemical applications of various functional materials.