Development of a Hybrid Chitosan- and Niacinamide-Coupled ZnO Nanoparticle Composite for Sun Protection Application

Figure 3

SEM images of ZnO (a), CS/ZnO (b), and Nia/ZnO (c). The measurements were processed with a platinum pretreatment of ZnO (a), CS/ZnO (b), and Nia/ZnO (c).

(a)

(b)

(c)