Table 2. Comparison of Michaelis–Menten Parameters for Ionic FePt, Cubic Fe3O4, and Pd with Different Ligandsa.
| INPs | Km (mM) | Vmax (M s–1) | [E0] (M) | kcat (s-1) | substrate (mM) |
|---|---|---|---|---|---|
| FePt–dopamine | 0.079 | 59.88 × 10–8 | 5.9 × 10–7 | 1.02 | H2O2 (0) and TMB |
| FePt–3,4-DHCA | 0.121 | 21.10 × 10–8 | 5.9 × 10–7 | 0.36 | H2O2 (0) and TMB |
| Fe3O4–dopamine | 0.599 | 162.1 × 10–8 | 1.2 × 10–8 | 135 | H2O2 (400) and TMB |
| Fe3O4–3,4-DHCA | 0.951 | 163.1 × 10–8 | 1.2 × 10–8 | 136 | H2O2 (400) and TMB |
| Pd–4-ATP | 0.113 | 19.53 × 10–8 | 3.4 × 10–7 | 0.58 | H2O2 (400) and TMB |
| Pd–4-MCBA | 0.260 | 200.0 × 10–8 | 3.4 × 10–7 | 5.88 | H2O2 (400) and TMB |
a
Km is the Michaelis constant, Vmax is the maximal reaction velocity, [E] is the ionic nanoparticle concentration, and kcat is the catalytic constant, where kcat = Vmax/[E].