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. 2023 Mar 27;14:1711. doi: 10.1038/s41467-023-37404-0

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© The Author(s) 2023

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. 2 — a High-resolution Pt 4 f XPS spectra of PtC₆₀ and Pt NCs. b, c All-in-vacuum XPS and UPS spectra of Pt/C₆₀ film within the same vacuum chamber. d Binding energy of Pt 4f_7/2 and work function depending on the amount of Pt deposited on C₆₀ film corresponding to (b and c). e Normalized XANES spectra at Pt L₃-edge of PtC₆₀, Pt NCs, Pt foil, and PtO₂. f EXAFS spectra of PtC₆₀, Pt NCs, Pt foil and PtO₂. g Average oxidation states, and d-band hole counts fitted via XANES spectra in (e). h, i Wavelet transform for the k³-weighted EXAFS spectra for PtC₆₀ and Pt NCs, respectively.