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Table 1 XPS spectral fittings of Au/PDDA-G, PtAu/PDDA-G, and PDDA-G electrocatalysts

From: Characterization of Au and Bimetallic PtAu Nanoparticles on PDDA-Graphene Sheets as Electrocatalysts for Formic Acid Oxidation

XPS PtAu/PDDA-G
C_1s	285.7 eV (%)		284.6 eV (%)
C_1s	33.81		66.19
O_1s	533.8 eV (%)	532.1 eV (%)	531.1 eV (%)	530.2 eV (%)
O_1s	37.95	30.70	21.62	9.63
N_1s	401.1 eV (%)		399.6 eV (%)
N_1s	58.98		41.02
Pt_4f	76.2 eV (%)	74.3 eV (%)	71.4 eV (%)	70.8 eV (%)
Pt_4f	19.26	80.74	50.85	49.15
Au/PDDA-G
C_1s	285.5 eV (%)		284.6 eV (%)
C_1s	36.51		63.49
O_1s	533.4 eV (%)	532.2 eV (%)	531.3 eV (%)	530.5 eV (%)
O_1s	30.80	34.48	21.13	13.59
N_1s	401.5 eV (%)		399.7 eV (%)
N_1s	41.24		58.72
PDDA-G
C_1s	287.5 eV (%)	285.7 eV (%)	284.6 eV (%)	284.1 eV (%)
C_1s	1.96	42.69	18.44	36.91
O_1s	534.2 eV (%)	532.4 eV (%)	531.8 eV (%)	530.7 eV (%)
O_1s	16.31	35.52	23.66	24.51
N_1s	402.0 eV (%)		401.6 eV (%)
N_1s	54.19		45.81

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