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. 2019 Aug 23;10(9):557. doi: 10.3390/mi10090557

Figure 6.

Figure 6

UV–VIS diffuse reflectance spectra (a) and the corresponding first derivative curves of the UV–VIS diffuse reflectance spectra (b) of the Ag3PO4/BiPO4 and CQDs/Ag3PO4/BiPO4 composites.