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. 2016 Feb 3;11:60. doi: 10.1186/s11671-016-1262-7

Fig. 4.

Fig. 4

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)