Figure 8

SEM images of barite-TiO2 composite particles after sonication:(a) 100 W, 10 min; (b) 400 W, 10 min; and (c) 800 W, 10 min.

SEM images of barite-TiO2 composite particles after sonication:(a) 100 W, 10 min; (b) 400 W, 10 min; and (c) 800 W, 10 min.