Interaction of Silver Nanoparticles and Chitin Powder with Different Sizes and Surface Structures: The Correlation with Antimicrobial Activities

Figure 3

UV-vis spectra of original Ag NPs in suspension (original) and supernatants from the postreaction mixtures in which various amounts of chitins A, B, C, and D reacted with Ag NPs. Excess Ag NPs in the supernatants of the postreaction mixtures decreased as the amount of chitin added increased.