Facile Synthesis of Rambutan-Like ZnO Hierarchical Hollow Microspheres with Highly Photocatalytic Activity

Figure 5

SEM images of the products prepared with different amounts of CMS: 2 mg·m (a), 4 mg·m (b), 6 mg·m (c), and 12 mg·m (d).

(a)

(b)

(c)

(d)