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. 2016 Feb 18;6:21423. doi: 10.1038/srep21423

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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).