528496.fig.001a
(a)
528496.fig.001b
(b)
528496.fig.001c
(c)
528496.fig.001d
(d)
Figure 1: SEM photograph (a), XRD pattern (b), Raman spectrum (c), and (d) high resolution TEM micrograph for as-prepared powder, which was obtained by heat treatment of a sponge-like shaped material synthesized by chemical reaction of SiCl4 with EG mixed under 1 : 1 volume ratio.