2D Transition Metal Carbides and Nitrides (MXenes) for Biomedical Applications
Wednesday, January 22, 2025
2:30 PM-4:00 PM
BIOMED Seminar
Title:
2D Transition Metal Carbides and Nitrides (MXenes) for Biomedical Applications
Speaker:
Yury Gogotsi, PhD, DSc
Distinguished University and Charles T. and Ruth M. Bach Professor
Director, A.J. Drexel Nanomaterials Institute
Departments of Materials Science & Engineering (MSE) and Mechanical Engineering & Mechanics (MEM)
College of Engineering
Drexel University
Details:
More than 40 stoichiometric MXene compositions and dozens of solid solutions and structures with various terminations have been reported since the first report on Ti3C2Tx in 2011 [1]. The number of possible MXene compositions is infinite if one considers solid solutions (more than 50 have been made in our lab) and combinations of surface terminations. New subfamilies of in- and out-of-plane ordered MXenes, oxycarbides, 2D borides, and silicides further expand the family of non-oxide 2D materials based on transition metals.
MXenes have also opened an era of computationally driven atomistic design of 2D materials. Many MXenes studied to date are biocompatible, particularly Ti, Nb, Ta carbides, etc. They possess electronic, optical, mechanical, and electrochemical properties that differentiate them from other materials. In particular, Ti3C2 has high metallic and ionic conductivity, and its conductivity greatly exceeds that of carbon nanomaterials. Moreover, MXene properties are tunable by design and can be modulated using light or applied potential.
This presentation will discuss the structure, synthesis methods, biocompatibility, and biomedical application of several MXene variants. I’ll explain the synthesis effect on composition and properties and outline prospects for biomedical applications of MXenes ranging from photothermal therapy to tissue engineering, biosensing, and implantable and epidermal electrodes [2-4]. This analysis is expected to pave the way for more MXene compositions to be explored in the biomedical and healthcare fields.
Biosketch:
Yury Gogotsi, PhD, DSc, is a Distinguished University Professor and Charles T. and Ruth M. Bach Endowed Chair in the Department of Materials Science and Engineering at Drexel University (Philadelphia, USA). He is the founding Director of the A.J. Drexel Nanomaterials Institute. He received his MS (1984) and PhD (1986) from Kyiv Polytechnic and a DSc degree from the National Academy of Sciences of Ukraine in 1995. Together with his students and colleagues, he made principal contributions to the development of materials for electrochemical capacitors and other energy storage devices, discovered MXenes, demonstrated the tuning of structure and porosity of carbide-derived carbons, and developed new processes for the synthesis, surface modification, and purification of nanotubes and nanodiamonds. He also published the first microscopic observation of water inside carbon nanotubes, discovered polygonal nanotubes (graphite polyhedral crystals), and shaped the field of high-pressure surface science.
Dr. Gogotsi is recognized as a Highly Cited Researcher in Materials Science and Chemistry and a Citations Laureate in Physics by Clarivate Analytics (Web of Science). He has received numerous awards for his research, including the Ceramic Prize from the World Academy of Ceramics, the MRS Medal, the Jan Czochralski Award from the European MRS, the European Carbon Association Award, the American Chemical Society (ACS) Award in the Chemistry of Materials, etc. He has been elected a Fellow of MRS, the National Academy of Inventors, World Academy of Ceramics, European Academy of Sciences, Academia Europaea, and other professional societies. He holds honorary doctorates from several European Universities.
Contact Information
Carolyn Riley
cr63@drexel.edu