Fig. 2
ROS production of TB and characterization of TBR. A The absorption spectra of MB with different treatments. B The absorption spectra of MB in different concentration of TB solution. C The absorption spectra of MB in TB solution under different dosage of X-ray irradiation. D Zeta potentials of TiO2:Bi, TiO2:Bi-OH, and TiO2:Bi-PEG-COOH. E FTIR spectra of RGD and TiO2:Bi-RGD (TBR). F The particle size distribution and colloid stability of TBR in different media, including water, PBS, 10%FBS, and DMEM