Table III.
Quantification of Mn in different chemical state from XPS.
| Center | Height | FWHM | Area | Proportiona | Proportionb | |
|---|---|---|---|---|---|---|
| Mn2+ | ||||||
| Peak #1 | 640.179 | 300 | 0.9030155 | 288.3691 | 0.060191 | 0.413234 |
| Peak #3 | 641.2 | 278.5569 | 1.6 | 474.4229 | 0.099026 | |
| Peak #6 | 642 | 236.5623 | 2 | 503.6249 | 0.105122 | |
| Peak #8 | 642.9 | 209.9633 | 0.9824735 | 219.5819 | 0.045833 | |
| Peak #14 | 645 | 93.44832 | 2.75 | 273.5482 | 0.057098 | |
| Peak #16 | 647.5 | 104.6154 | 1.979269 | 220.2088 | 0.045964 | |
| Mn3+ | ||||||
| Peak #2 | 640.7 | 673.178 | 0.806196 | 644.5823 | 0.134544 | 0.380165276 |
| Peak #4 | 641.4 | 388.5492 | 1 | 460.7613 | 0.096175 | |
| Peak #7 | 642.2 | 335.8108 | 0.7656146 | 307.357 | 0.064155 | |
| Peak #10 | 643.2 | 146.7075 | 1.65 | 284.4088 | 0.059365 | |
| Peak #12 | 644.6 | 31.37408 | 3.5 | 124.2172 | 0.025928 | |
| Mn4+ | ||||||
| Peak #5 | 641.9 | 185.4045 | 1.5 | 326.5487 | 0.06816 | 0.2066 |
| Peak #9 | 642.9 | 135.1923 | 1.1 | 176.6936 | 0.036881 | |
| Peak #11 | 643.8 | 117.0724 | 1.2 | 166.7105 | 0.034797 | |
| Peak #13 | 644.8 | 75 | 1.497097 | 132.3673 | 0.027629 | |
| Peak #15 | 645.8 | 69.9997 | 2.319403 | 187.478 | 0.039132 | |
a
Proportion of each peak in that state of Mn.
b
Proportion of that state of Mn of the total Mn in the sample.