Fig. 2

a XRD spectra of FePt nanoparticles. b EDX spectra of FePt nanoparticles. c The degradation curves of MB solution containing 10 mM of H₂O₂ after MIO, USIO, and FePt treatment. d Hydrodynamic particle size of FePt and pLFePt-GOx. e FT-IR spectra of FePt, GOx, PDGFB-PEG, pLFePt, and pLFePt-GOx. f Uv–vis spectra of pLFePt before and after loading GOx. g H₂O₂ production in different concentrations of glucose solution catalyzed by GOx. (h) MB degradation curves of pLFePt-GOx in different pH solutions containing 10 mM of glucose. i MB degradation curves of different concentrations of pLFePt-GOx in 10 mM of glucose solution at pH 4.5