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Figure 3
Structural analysis of CDs. XPS analyzed the structure of AOCDs (A). Element content; (B). C1s spectra; (C). N1s spectra; (D). O1s spectra, XPS analyzed the structure of AOCDs:Ca; (E). Element content; (F). C1s spectra; (G). N1s spectra; (H). O1s spectra; (I). Ca2 p spectra; (J). Comparison of raw materials and CDs structure by FT-IR. a: Calcium gluconate; b: AOCDs:Ca; c: AOCDs; d:Acryamide; e: Carboxymethyl chitosan.
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