. 2023 Jul 3;57(46):18080–18090. doi: 10.1021/acs.est.3c00293

Table 5. XPS Characterization^a.

catalyst	Mn⁴⁺/(Mn⁴⁺ + Mn³⁺) (%)	Fe³⁺/(Fe²⁺ + Fe³⁺) (%)	Ni³⁺/(Ni²⁺ + Ni³⁺) (%)	O_β/(O_β + O_α + O_γ) (%)
Fe_0.4Mn_0.15Ni_0.45	36.53	46.36	40.96	26.81
Fe_0.2Mn_0.2Ni_0.6	33.84	51.38	43.09	18.17
Fe_0.2Mn_0.6Ni_0.2	14.67	46.04	41.93	13.62
Fe_0.319Mn_0.206Ni_0.475	34.28	44.89	42.17	22.32

Note that catalyst Fe_0.319Mn_0.206Ni_0.475 was identified from the second round of iteration (Figure S4 of the Supporting Information), and other three catalysts were identified from the first round of iteration.

Table 5. XPS Characterizationa.

Table 5. XPS Characterization^a.