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. 2024 Nov 3;19:11195–11212. doi: 10.2147/IJN.S486827

Figure 4.

Figure 4

The FTIR spectra of GQDs, GQDs-Ag and ALN-GQDs-Ag. The top (red) spectrum showed the presence of carboxyl (-COO-), carbonamide (-N-C=O) and hydroxyl (-OH) groups of ALN-GQDs-Ag.