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. 2020 Apr 29;11:2077. doi: 10.1038/s41467-020-15991-6

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — a Schematic model of MXene-GO platelets showing the formation of Ti–O-C covalent bonding. b Atomic force microscope (AFM) of MXene nanosheet-functionalized GO platelets. Scale bar, 5 μm. c An illustration of the Mxene-functionalized GO platelets of b. d, A photograph of a folded MrGO-AD sheet. Scale bar, 1 cm. e A high-resolution transmission electron microscopy (HR-TEM) image of the cross-section of the MrGO-AD sheet. Scale bar, 10 nm. f X-ray diffraction (XRD) patterns. g Comparisons of Fourier-transform infrared spectroscopy (FTIR) spectra and h Raman spectroscopy spectra of obtained sheets. i Ti 2p spectra of MXene and MGO sheets. A new peak at a binding energy of 456.5 eV indicates the formation of Ti–O–C covalent bonding between MXene and GO nanosheets. j Comparison of C 1s spectra. k UV-vis absorption spectra of MXene, GO, and MGO sheets.