Figure 1From: Synthesis of multi-shelled ZnO hollow microspheres and their improved photocatalytic activitySEM images of monodispersed carbonaceous templates and TEM image of the as-prepared carbon spherules. (a-c) SEM images of monodispersed carbonaceous templates prepared under different glucose concentrations: (a) 1 mol L−1, (b) 0.5 mol L−1, (c) 0.25 mol L−1. (d) TEM image of the as-prepared carbon spherules.Back to article page