Table 3 Contributions from different reactive surface sites and the MOPS buffer to the overall H2O2 decomposition rate constant (ktot) for the blank-altered fiber treatment. The fitted constants (k (Exp.x)) for the treatments reported in Table 2 were used and linear additivity was assumed
Decomposition mode | Experiment Nr. | Determination of the contribution to ktot of blank- altered fibers | k-value [h−1] |
|---|---|---|---|
1.) MOPS buffer | 8 | k (Exp.8) = k1 | k1 = 1.2*10− 3 |
2.) Remnant H2O2 decomposition | 3 | k (Exp.3) – k1 = k2 | k2 = 1.3*10− 3 |
3.) Secondary Fe precipitates | 11, 9 | k (Exp.11) – k (Exp.9) = k3 | k3 = 0.7*10− 3 |
4.) Tetrahedral Fe | 2 | k1 + k2 + k3 + k4 = k (Exp.2) = > k (Exp.2) – k1 – k2 – k3 = k4 | k4 = 1.0*10− 3 |