Table 8.

Binding energy and full width at half maximum (FWHM) of XPS peaks used for deconvolution.

Constituents	654SMO		C276
	Binding Energy (eV)	FWHM (eV)	Binding Energy (eV)	FWHM (eV)
Fe	706.7	1.05	706.9	1.5
FeO	707.9	1.86	-	-
Fe2O3	709.7	1.86	-	-
FeOOH	711.9	2.25	712.1	3.06
Cr	573.8	1.41	573.9	1.77
Cr2O3	576.1	2.28	576.3	2.09
Cr(OH)3	577.3	2.61	577.5	2.13
Ni	852.6	1	852.7	1.07
NiO	853.6	1.34	853.6	0.85
Mo 3d5/2	227.3	0.63	227.6	0.75
Mo4+ 3d5/2	228.5	1.96	228.4	1.3
Mo 3d3/2	230.6	1.75	230.7	1.03
Mo6+ 3d5/2	232.1	1.76	232.2	1.84
Mo4+ 3d3/2	233.3	1.58	233.8	1.31
Mo6+ 3d3/2	235.1	1.92	235.2	2.09
O2−	530.1	0.58	530.3	1.39
OH−	531.5	1	531.6	1.68
H2O	532.9	0.37	532.8	1.82
Mo6+ 3p3/2	400.0	1.58
Mo4+ 3p3/2	397.7	0.92
Nitride	398.4	0.78	-	-
${\mathrm{NH}}_4^{+}$	399.0	0.93	-	-