Fig. 6From: Photo-Fenton Degradation of AO7 and Photocatalytic Reduction of Cr(VI) over CQD-Decorated BiFeO3 Nanoparticles Under Visible and NIR Light Irradiationa and b TEM and HRTEM images of bare BiFeO3 nanoparticles, respectively; c TEM image of CQDs; d–g TEM images of 3C/BFO, 6C/BFO 12C/BFO, and 24C/BFO respectively; h HRTEM image of 12C/BFOBack to article page