Effective Method for the Determination of the Unit Cell Parameters of New MXenes

oleh: Alexander Syuy, Dmitry Shtarev, Alexey Lembikov, Mikhail Gurin, Ruslan Kevorkyants, Gleb Tselikov, Aleksey Arsenin, Valentyn Volkov

Format: Article
Diterbitkan: MDPI AG 2022-12-01

Deskripsi

MXenes are of great practical interest. While the physical properties of such a well-known MAX phase as Ti<sub>3</sub>AlC<sub>2</sub> and the Ti<sub>3</sub>C<sub>2</sub> MXene that is based on it have been widely studied, it is extremely important to study the properties of new four-component MAX-phases and the MXenes based on them. To do this, first, it is necessary to characterize the obtained materials. In this work, the Ti<sub>3−x</sub>Nb<sub>x</sub>C<sub>2</sub> MXene was characterized. Since the material is fairly new, there are no crystallographic data for such systems in the international databases. We proposed a method for the determination of the main unit cell parameters of the new Ti<sub>3−x</sub>Nb<sub>x</sub>C<sub>2</sub> MXene, which was based on a combination of the DFT method, TEM studies, and an X-ray diffraction analysis.