MXene Reactivity and Its Role in Development of Applications

A large family of two-dimensional transition metal carbides and nitrides (MXenes) raises interest for many applications due to their high electrical conductivity, mechanical properties [1], potentially tunable electronic structure [2], nonlinear optical properties [3], and the ability to be manufactured in the thin film state [4]. However, their chemistry that is key to development of these applications, still remains poorly understood [5,6]. In this presentation we will discuss recent progress in understanding fundamental MXene chemistry and harnessing it for suppressing unwanted reactions and prolonging stability of these materials.
For example, suppressing oxidation and hydrolysis at high pH was demonstrated as an effective way to prolong shelf-life and stability of MXene aqueous colloids [7]. Use of polyphosphate also has been shown to improve chemical stability of MXene aqueous colloids [8].
Other selected examples illustrating connections between understanding MXene chemistry and development of their applications will also be considered.



References
Y. Li, S. Huang, C. Wei, C. Wu, V. N. Mochalin, Nature Communications, 10, 3014 (2019)
M. Naguib, V. N. Mochalin, M. W. Barsoum, Y. Gogotsi, Advanced Materials, 26(7), 992-1005 (2014)
J. Yi, L. Du, J. Li, L. Yang, L. Hu, S. Huang, Y. Dong, L. Miao, S. Wen, V. N. Mochalin, et al., 2D Materials, 6, 045038 (2019)
Y. Dong, S. Chertopalov, K. Maleski, B. Anasori, L. Hu, S. Bhattacharya, A. M. Rao, Y. Gogotsi, V. N. Mochalin, R. Podila, Advanced Materials, 30(10), 1705714 (2018)
S. Huang, V. N. Mochalin, Inorganic Chemistry, 58(3), 1958 (2019)
S. Huang, V. N. Mochalin, ACS Nano 14(8), 10251-10257 (2020)
S. Huang, V. N. Mochalin, Inorganic Chemistry, 61(26), 9877 (2022)
S. Huang, V. Natu, J. Tao, Y. Xia, M. W. Barsoum, V. N. Mochalin, Journal of Materials Chemistry A 10 (41), 22016 (2022)