Prof. Yuri Gogtsi , A.J. Drexel Nanomaterials Institute, and Department of Materials Science and Engineering, Drexel University, USA
2D Carbides, Nitrides, Oxycarbides, and Carbonitrides (MXenes) Expand the Nanomaterials World
, 13:00 - 14:00
Online: Access details below
Discovery of new materials provides moments of inspiration and shifts in understanding, shaping the dynamic field of materials science. Closed-shell dichalcogenide structures discovered and explored by Reshef Tenne increased the variety and complexity of the nanomaterials family. Folloing the discovery of 2D Ti3C2 in 2011, 2D carbides, oxycarbides, carbonitrdes and nitrides of transition metals known as MXenes  have further expanded the nanomaterials family. More than 30 different stoichiometric carbide and nitride MXenes have been reported, and the structure and properties of numerous other MXenes have been predicted. Moreover, the availability of solid solutions on M and X sites, multi-element high-entropy MXenes, control of surface terminations, and the discovery of out-of-plane ordered double-M o-MXenes (e.g., Mo2TiC2), as well as in-plane ordered i-MXenes offer a potential for producing dozens of new distinct structures. This presentation will describe the state of the art in the manufacturing of MXenes, their delamination into single-layer 2D flakes and assembly into films, fibers and 3D structures. Synthesis-structure-properties relations of MXenes will be addressed on the example of Ti3C2. The versatile chemistry of the MXene family renders their properties tunable for a large variety of applications.
1. R. Tenne, L. Margulis, M. Genut. G. Hodes, Polyhedral and Cylindrical Structures of Tungsten Disulfide, Nature, 360, 444-446 (1992)
2. A. VahidMohammadi, J. Rosen, Y. Gogotsi, The World of Two-Dimensional Carbides and Nitrides (MXenes), Science, 372, eabf1581 (2021)
Yury Gogotsi is Distinguished University Professor and Charles T. and Ruth M. Bach Professor of Materials Science and Engineering at Drexel University. He also serves as Director of the A.J. Drexel Nanomaterials Institute. For his research on development of carbide-derived carbons with tunable porosity, discovery of new carbon nanostructures, visualization of liquids in carbon nanotubes, discovery of MXenes and development of materials for electrochemical capacitors, he is recognized as Highly Cited Researcher in Materials Science and Chemistry, and Citations Laureate in Physics by Clarivate Analytics. He has received numerous awards for his research including the MRS Medal, ACS Award in the Chemistry of Materials, Gamow Prize, European Carbon Association Award, and S. Somiya Award from IUMRS. He has been elected a Fellow of the World Academy of Ceramics, the European Academy of Sciences, American Association for Advancement of Science, Materials Research Society, American Ceramic Society, the Electrochemical Society, Royal Society of Chemistry, and the International Society of Electrochemistry. He holds honorary doctorates from Universities in France and Ukraine.
ZOOM Link: https://tinyurl.com/nanoSeminar-GA