Facile Synthesis and Photocatalytic Property of Titania/Carbon Composite Hollow Microspheres with Bimodal Mesoporous Shells

Figure 2

SEM image of the TiO₂/C composite hollow spheres calcined at 450°C for 0.5 (a), 1 (b), 2 (c), and 4 h (d).

(a)

(b)

(c)

(d)