Fig. 8

a The absorption spectra of H₂O₂ with various concentration and the corresponding images are shown in the inset picture. These experiments conditions are shown as follows: 1.4 mL CPBS (pH 4.2), 200 μL TMB (1 mM), 200 μL F-MoS₂-FePt HNPs (20 μg mL⁻¹) and different amount of H₂O₂. b Dose–response curve for H₂O₂ determination