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. 2017 Jul 31;7:6917. doi: 10.1038/s41598-017-07186-9

Figure 2.

Figure 2

UV-Visible absorption spectra of the synthesized Ag NPs (curve a) and Ag NP@N-GQD (curves b–f) with various mass ratios (QN-GQD/QAgNO3 = 0, 0.04, 0.08, 0.12, 0.16 and 0.2, respectively).