Size-Controlled Synthesis of Fe₃O₄ Magnetic Nanoparticles in the Layers of Montmorillonite

Figure 3

(a) Powder X-ray diffraction patterns of MMT (a) and Fe₃O₄/MMT NCs for determination of d-spacing (d _s) and crystals structure at different percentage of NPs (1.0, 3.0, 5.0, 7.0, 9.0, and 12.0 wt. % ((b)–(f))). (b) Powder X-ray diffraction patterns of MMT (a) and MMT–Fe₃O₄-NCs for determination of Fe₃O₄ crystal structure. (b)–(h): 1, 3, 5, 7, 9, and 12% (w/w).

(a)

(b)