fig3
![Application of polyoxometalates and their composites for the degradation of antibiotics in water medium](https://image.oaes.cc/17c181ae-7a95-4a34-9241-c82d783b3b76/wecn2040.fig.3.jpg)
Figure 3. The photocatalytic mechanism of catalysts is represented in three different ways: (A) a diagrammatic photocatalytic scheme of POM-based catalysts; (B) the mechanism of pure semiconductor photocatalysts; and (C) the mechanism of POM-based composite photocatalysts. CB: Conduction band; POM: polyoxometalate; VB: valence band.