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. 2020 Jan 10;10(4):2191–2197. doi: 10.1039/c9ra08904g

Amount (at%) of Co with different valence states in Co3O4 samples.

Sample Co Co(iii) Co(ii) Co(ii) (satellite) Co(iii) (satellite)
T300-Co3O4 25.74 9.42 10.94 3.53 1.85
T350-Co3O4 28.6 9.68 12.51 4.21 2.20
T400-Co3O4 29.43 10.32 11.66 4.94 2.50
T450-Co3O4 27.07 9.64 10.18 5.26 1.99
T500-Co3O4 26.71 10.63 9.91 4.01 2.15