Figure legends
Fig. 1 UV-Vis absorption spectra and SEM (A) , X-ray diffraction (B) , FTIR spectra (C) and silver ion release concentration (concentration of AgNPs is 10 mg/L) (D)of AgNPs.
Fig. 2 UV-vis spectra of different combinations after 10 min of reaction at room temperature.
Fig. 3 Optimization parameters for efficient sensing with variation in pH (A) , temperature (B) , R12-AgNPs concentration (C) and time (D) .
Fig. 4 Bacteriostasis rate of E. coli (A) andS. aureus (B) incubated with different concentrations of C-AgNPs, R12-AgNPs and R12-AgNPs+H2O2(concentration of H2O2 = 10 μM); Bacteriostasis rate of E. coli (C) and S. aureus(D) incubated with different concentrations of H2O2(10-7-10-3M) after treatment with or without R12-AgNPs (1 μg/mL); Bacterial colonies (E) treated with C-AgNPs, R12-AgNPs and R12-AgNPs+H2O2 (concentration of H2O2 = 10 μM, concentration of AgNPs = 1 μg/mL).
Fig. 5 ROS generation (A, B) and SEM pictures(C) of bacteria after treatments with bactericidal agents.
Fig. 6 Schematic representation of the synergistic antimicrobial mechanism of R12-AgNPs with H2O2.
Fig.7 Cell viability of R12-AgNPs after 24 h incubation at different concentrations.