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A critical analysis of the X-ray photoelectron spectra of Ti3C2Tz MXenes

Open access
Natu, Varun, Benchakar, Mohamed, Canaff, Christine, Habrioux, Aurélien, Célérier, Stéphane, Barsoum, Michel W.·2021·Matter

Abstract

Since their discovery in 2011, MXenes have garnered worldwide interest. Given their 2D structure, surface, or termination, chemistries play a vital role in most applications. X-ray photoelectron spectroscopy (XPS) is one of the most common characterization tools for quantifying surface terminations and overall chemistry. Herein, we critically review the XPS fitting models proposed for Ti 3 C 2 T z MXene in the literature and make the case that they are at best incomplete and at worst contradictory. We propose a new fitting algorithm based on all the data obtained from previously published studies and propose a new method for quantifying the surface terminations in Ti 3 C 2 T z . In our approach, we assign the Ti 2p peak at 455.1 eV to the C–Ti–O\O\O, and the peaks at 456.0, 457.0, 457.9, and 459.6 eV are assigned to C–Ti–O\O\F, C–Ti–O\F\F, C–Ti–F\F\F, and TiO 2-x F 2x , respectively. The first four represent possible Ti atom terminations; the last is an oxyfluoride. The C 1s peak at 282 eV, ascribed to C atoms surrounded by 6 Ti atoms, is so universal that it can almost be used as a reference.

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Metadata

Authors
Natu, V., Benchakar, M., Canaff, C., Habrioux, A., Célérier, S., & Barsoum, M. W.
Venue
Matter
Publisher
Elsevier BV
Published
2021-04
Volume
4
Issue
4
Pages
1224-1251
ISSN
2590-2385 (ISSN-L)
OpenAlex
W3132236801
Cited by
717
References
42
FWCI
22.20
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: A critical analysis of the X-ray photoelectron spectra of Ti3C2Tz MXenes. https://app.cochat.ai/papers/10.1016/j.matt.2021.01.015
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Natu, V., Benchakar, M., Canaff, C., Habrioux, A., Célérier, S., & Barsoum, M. W. (2021). A critical analysis of the X-ray photoelectron spectra of Ti3C2Tz MXenes. Matter. https://doi.org/10.1016/j.matt.2021.01.015

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