pone.0239034.g005.tif (769.63 kB)

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posted on 18.09.2020 by Celia Martinez de la Torre, Jasmine H. Grossman, Andrey A. Bobko, Margaret F. Bennewitz

XPS spectra of MnO NP samples for each temperature profile showing the a) whole spectral region and b) the Mn3s region. The whole spectral region indicates the presence of manganese, oxygen, and carbon in the NP samples, while the Mn3s region shows peak splitting characteristic of surface oxidation to Mn3O4 (Mn2+/Mn3+ oxidation states).

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