Figure 2: The characterization of SiO2 nanospheres and SiO2-Ag composites.

Scanning electron microscopy (SEM) images of SiO2 nanospheres (A), SiO2-Ag composites (B); Transmission electron microscope (TEM) images of SiO2 nanospheres (C) and SiO2-Ag composites (D); HRTEM images of SiO2-Ag composites (E) and Ag NPs (F); Fast fourier transform images of Ag NPs (G); EDS of SiO2-Ag composites (H).