Figure 7From: Template Route to Chemically Engineering Cavities at Nanoscale: A Case Study of Zn(OH)2 TemplateThe as-prepared SiO2 hollow octahedra: a low and b high magnification SEM image, c TEM image. d PL spectra of (a) ZnO and (b) ZnO/SiO2 core/shell structures obtained under an ultraviolet excitation at 350 nmBack to article page