Figure 2.

(a) UV–Vis absorption spectra of different samples incubated with TMB for 5 min. (b) UV–Vis absorbance spectra of TMB (1 mmol/L), IONPs (50 μg/mL) and H₂O₂ (1 mmol/L) solution during 15 min with different irradiation time. (c–f) Steady-state kinetic assay and catalytic ability of IONPs toward [TMB] (c, d) and [H₂O₂] (e, f).