American Chemical Society
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Ion Implantation as an Approach for Structural Modifications and Functionalization of Ti3C2Tx MXenes

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journal contribution
posted on 2021-02-15, 15:34 authored by Hanna Pazniak, Mohamed Benchakar, Thomas Bilyk, Andrea Liedl, Yan Busby, Céline Noël, Patrick Chartier, Simon Hurand, Marc Marteau, Laurent Houssiau, Rosanna Larciprete, Paolo Lacovig, Daniel Lizzit, Ezequiel Tosi, Silvano Lizzit, Jérôme Pacaud, Stéphane Célérier, Vincent Mauchamp, Marie-Laure David
MXenes are a young family of two-dimensional transition metal carbides, nitrides, and carbonitrides with highly controllable structure, composition, and surface chemistry to adjust for target applications. Here, we demonstrate the modifications of two-dimensional MXenes by low-energy ion implantation, leading to the incorporation of Mn ions in Ti3C2Tx (where Tx is a surface termination) thin films. Damage and structural defects caused by the implantation process are characterized at different depths by XPS on Ti 2p core-level spectra, by ToF-SIMS, and with electron energy loss spectroscopy analyses. Results show that the ion-induced alteration of the damage tolerant Ti3C2Tx layer is due to defect formation at both Ti and C sites, thereby promoting the functionalization of these sites with oxygen groups. This work contributes to the inspiring approach of tailoring 2D MXene structure and properties through doping and defect formation by low-energy ion implantation to expand their practical applications.