“…This is because the persistent luminescent intensity and duration (about 10 min) of the ZnxGa2O3+x is not enough to efficiently degrade the RhB dye. Conversely, the degradation efficiency of the MB and RhB dyes can be continued for a relatively long time in the MPL@PCM composites where the MPLs can show the persistent duration for several hours, e.g., SrAl2O4:Eu,Dy@g-C3N4@Au [57], SrAl2O4:Eu,Dy@Ag3PO4 [64], Sr2MgSi2O7:Eu,Dy@Ag3PO4 [376], Sr2MgSi2O7:Eu,Dy@g-C3N4 [379], and NL-PA@BiOBr [381]. Besides, for instance, the BiOBr@NL-PA under a 300 W Xe lamp shows the improved photocatalytic RhB decomposition compared to the BiOBr PCM alone [381] (Figure 19d), which directly proves that the use of MPL@PCM composite is beneficial to the photocatalysis.…”