Photodegradation of Methylene Blue by TiO₂-Fe₃O₄-Bentonite Magnetic Nanocomposite

Figure 2

SEM images of (a) bentonite, (b) Fe₃O₄-bentonite, (c) TiO₂-bentonite, and (d) TiO₂-Fe₃O₄-bentonite.

(a)

(b)

(c)

(d)