Fig. 4
From: Enhanced Photocatalytic Activity of the Carbon Quantum Dot-Modified BiOI Microsphere
Photocatalytic activity comparison of the CQD/BiOI 1.5 wt.% sample in different photocatalysis systems under visible light irradiation (a). The schematic of the separation and transfer of photogenerated charges in the CQD/BiOI combined with the possible reaction mechanism of the photocatalytic procedure (b). Stability tests of CQD/BiOI 1.5 wt.% sample (c) and the XRD pattern of the sample before and after stability tests (d)