From: Bioproduction of cerium-bearing magnetite and application to improve carbon-black supported platinum catalysts
sample name
d6 Fe(II) Oh
d5 Fe(III) Td
d5 Fe(III) Oh
total
Td/Oh
Fe(II)/Fe(III)
0% Ce ferrihydrite
1.05
0.91
3.01
0.54
0.2Â mol% Ce
0.81
0.73
2.59
0.46
0.68
0.5Â mol% Ce
0.80
0.62
2.47
0.48
0.74