Marino Xanthos Lecture Series

Marino Xanthos Memorial Lecture 2024

Wednesday, October 09, 2024

2:30 pm 

Eastern Standard Time (US & Canada)

Central King Building

Room L-70 (Agile Strategy Lab)

2D Carbides and Nitrides (MXenes) Are Ready to Roll

Abstract

MXenes are a family of two-dimensional (2D) early transition metal carbides, nitrides, oxycarbides, carbonitrides, and related structures with a general formula of Mn+1XnTx, where M is a transition metal, X is carbon or nitrogen (oxygen substitution is possible), T represents the surface terminations (O, OH, halogen, chalcogen, etc.), and n = 1—4 [1]. More than 50 MXene compositions have already been reported, but the number of possible compositions is infinite if one considers solid solutions and combinations of surface terminations. MXenes open an era of computationally driven atomistic design of 2D materials. MXenes possess electronic, optical, mechanical, and electrochemical properties that differentiate them from other materials. Chemically tunable superconductivity has been demonstrated in Nb- and Mo-based MXenes. Highly nonlinear optical properties of MXenes are being explored. Several MXenes have been predicted to act as topological insulators. Many MXenes are metals but with a tunable density of states at the Fermi level, like semiconductors. Moreover, their properties are tunable by design. T hey can be modulated using an ionotronic approach [2], leading to breakthroughs in the fields ranging from optoelectronics, electromagnetic interference shielding, and communication to energy storage, catalysis, sensing, and healthcare.  In several applications, such as electromagnetic interference shielding, MXenes have already outperformed all other materials. In this talk, I’ll discuss the synthesis and structure of MXenes, their optoelectronic properties, and the coupling between electrochemical redox processes in MXenes and their optical properties, which can be monitored in situ using spectroelectrochemistry techniques.

1]  A. VahidMohammadi, J. Rosen, Y. Gogotsi, The World of Two-Dimensional Carbides and Nitrides (MXenes), Science, 372, eabf1581 (2021)

[2]  M. Han, D. Zhang, C. E. Shuck, B. McBride, T. Zhang, R. (John) Wang, K. Shevchuk, Y. Gogotsi, Electrochemically Modulated Interaction of MXenes with Microwaves, Nature Nanotechnology, 18, 373–379 (2023)

[3]   D. Zhang, R. (John) Wang, X. Wang, Y. Gogotsi, In situ monitoring redox processes in energy storage using UV-Vis spectroscopy, Nature Energy, 8, 567–576 (2023)

Yury Gogotsi 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. He is the founding director of the A.J. Drexel Nanomaterials Institute. Together with his students and colleagues, he made principal contributions to the development of materials for electrochemical energy storage, 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 and discovered polygonal nanotubes (graphite polyhedral crystals). He 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 Materials Research Society (MRS) Medal, the American Chemical Society (ACS) Award in the Chemistry of Materials, etc. He has been elected  a Fellow of the National Academy of Inventors, the World Academy of Ceramics, the European  Academy of Sciences, and many professional societies. He holds honorary doctorates from several European universities.

Marino Xanthos, Ph.D. was a professor of Chemical, Biological and Pharmaceutical Engineering. Associate Provost for Graduate Studies, and Senior Technical Advisor to the Polymer Processing Institute (PPI) at NJIT Petroleum Institute.  During the period of 1987 to 1995, he was the research director of the PPI and Stevens Research Professor.  He was appointed professor of chemical engineering at NJIT in 1995, where he served until his passing as Director of the Polymer Engineering Center, Director of the Center of Processing of Plastics Packaging, Chairperson of the Executive Committee of the Materials Research Council, Senior Technical Adviser to the PPI at NJIT, and finally Associate Provost for Graduate Studies.

Dr. Xanthos was internationally recognized for his polymer blends, polymer composites and polymer foams expertise, and his studies on polymer modification through the use of functional particulate additives and reactive extrusion processes. He applied those to the processing of pharmaceutical oral dosage forms. He advised Ph.D. and master-level students and was also involved with PPI technical staff and industrial colleagues nationally and internationally.

Dr. Xanthos became a Fellow of the Society of Plastics Engineers (SPE) in 2003 and received the NJIT Board of Overseers Harlan J. Perlis Award that same year in recognition of his exemplary scholarship and outstanding research in the field of polymers. He served as the U.S. representative to the Board of the Polymer Processing Society since 2005. In 2010, he received the Heinz List Award in recognition of his outstanding achievements in reactive processing and devolatilization.

Dr. Xanthos deeply cared for and was a renowned mentor and advisor to his graduate and undergraduate students.  For many years, he was the advisor and life force of the NJIT student chapter of the Society of Plastics Engineers (SPE).

This lecture series was established by his family, friends and colleagues to memorialize his accomplishments and love of his chosen field.
 

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Morton M. Denn, Ph.D.
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