Figure 4
From: Antibacterial cellulose paper made with silver-coated gold nanoparticles
UV-Vis absorption spectra of the NP detachment tests. The solutions were collected at 0 h, 8 h, 24 h, 48 h, and 72 h. The absorption spectra were measured to determine the amount of NPs in solution. The inset images are of the original NP stock solutions used to make the NP-paper composites (“NP”) and the water solutions collected after the paper samples had been immersed for 0 h, 8 h, 24 h, 48 h, and 72 h. The results show that no significant NP signal can be seen in solution during this time period.
