Fig. 2

ROS scavenging ability of the Fe-curcumin nanozyme. a Schematic illustration of the ROS scavenging process. b DPPH radical scavenging ratio of the Fe-curcumin nanozyme. c ABTS radical scavenging ratio of the Fe-curcumin nanozyme. d Data statistics of the ROS scavenging ability based on the UV-vis absorption spectra of MB. e ESR spectra of DMPO indicating ▪OH capture with or without the Fe-curcumin nanozyme. f UV-vis absorption spectra of ABTS with different treatments. g UV-vis absorption spectra of MB with different treatments. h ESR spectra of TEMPO indicating singlet oxygen with or without the Fe-curcumin nanozyme