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Berlin 2024 – scientific programme

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O: Fachverband Oberflächenphysik

O 76: Focus Session: 2D Transition Metal Carbides, Nitrides and Carbonitrides II (joint session DS/MM/O)

O 76.4: Talk

Thursday, March 21, 2024, 10:30–10:45, A 053

Chemical characterization of defects in Ti3C2Tx MXenes by soft X-ray spectroscopy — •Arsène Chemin1, Zoé Dessoliers1, Robert W. Lord2, Yury Gogotsi2, and Tristan Petit11Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Berlin, Germany — 2A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, Pennsylvania, USA

MXenes offer a wide spectrum of properties with numerous fields of application. Yet, these properties can be strongly affected by defects, and a detailed understanding of their nature and structure is essential. Despite many observations of such defects, grasping their chemical natures is challenging. In this work, high-resolution X-ray Photoelectron Spectroscopy (HR-XPS) and, at the Ti L- and C,O K-edges, soft X-ray Absorption Spectroscopy (XAS), performed at the BESSY II synchrotron in Berlin, are used to investigate the chemical nature of defects in Ti3C2Tx MXenes.

Keywords: MXene; 2D materials; Ti3C2Tx; defects; XAS

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