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. 2023 Feb 8;12(2):351. doi: 10.3390/antibiotics12020351

Figure 4.

Figure 4

(A) Conceptual illustration of the preparation process for bimetallic Au-Ag NPs loaded chitosan antibacterial hydrogel wound dressing. (B) Antibacterial activities of different hydrogel samples against E. coli and S. aureus and Ag+ release kinetics of CS-Ag and CS-Au-Ag hydrogel. (C) Representative fluorescent images and SEM and TEM micrographs of S. aureus and E. coli treated with CS-Au-Ag and CS-Ag hydrogel. (D) Viability of cells incubated with different hydrogel samples. (E) Wound contraction ratio and (F) macrographs of wounds covered with different hydrogel samples at days 0, 3, 7, 11, and 15. Reproduced with permission from ref [79], Copyright 2017 American Chemical Society.