| XRD | Broad diffraction feature from the carbon support; weak reflections at approximately 40.246°, 46.814°, and 68.361°, indexed to fcc Pt (111), (200), and (220), respectively |
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| N 1s XPS | Components near 397.7, 399.5, 400.1, and 403.1 eV, assigned to pyridinic N, Pt–N-related coordination, graphitic N, and oxidized N, respectively |
Shihui Chen. “Electrocatalytic formic acid oxidation behavior of Pt–N/C.” ChemRxiv (). https://doi.org/10.26434/chemrxiv.15007772/v1
Values presented only in cyclic-voltammetry plots or images were not transcribed. No separate supporting information file was found among the files available from the ChemRxiv record
| Background cyclic voltammetry | Commercial Pt/C showed the characteristic hydrogen adsorption/desorption region at low potentials and surface-oxide-related features; Pt–N/C showed much less pronounced hydrogen adsorption/desorption features and a smoother voltammetric profile over the same potential range |
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