Research Article

Extracellular Biosynthesis of Copper and Copper Oxide Nanoparticles by Stereum hirsutum, a Native White-Rot Fungus from Chilean Forests

Figure 3

Analysis of the copper and/or copper oxide nanoparticles biosynthesized by the mycelium-free extract of S. hirsutum after 5 d of reaction at pH 9.0 in the presence of CuCl2 (5 mM). (a) FTIR spectra, (b) XRD pattern, and (c) zeta potential.