Synthesis of talc/Fe₃O₄ magnetic nanocomposites using chemical co-precipitation method

Figures & data

Figure 1 Flowchart of the synthesized talc/Fe₃O₄ nanocomposite powder in (A) talc and (B and C) talc/Fe³⁺–Fe²⁺ ion composites.

Abbreviations: EtOH, ethanol; Fe²⁺, ferrous ion; Fe³⁺, ferric ion; FeCl₂ · 4H₂O, ferrous chloride tetrahydrate; FeCl · 6H₂O, ferric chloride hexahydrate; Fe₃O₄, magnetite; H₂O, water; NaOH, sodium hydroxide.

Figure 2 Powder X-ray diffraction of (A,C) talc and (B,D) talc/Fe₃O₄ nanocomposites with the related peaks.

Abbreviation: Fe₃O₄, magnetite.

Figure 3 Transmission electron microscopy image and histogram of particle size distribution for talc/magnetite nanocomposites.

Figure 4 Transmission electron microscopy images of (A) pure talc and (B) talc/Fe³⁺–Fe²⁺ ion composites.

Abbreviations: Fe²⁺, ferrous ion; Fe³⁺, ferric ion.

Figure 5 Scanning electron microscopy micrographs of talc/magnetite nanocomposites with (A) low and (B) high magnification.

Figure 6 Energy dispersive X-ray spectroscopy of (A) talc and (B) talc/Fe₃O₄ nanocomposites.

Abbreviations: C, carbon; Fe, iron; Fe₃O₄, magnetite; O, oxygen.

Figure 7 Fourier transform infrared spectra of (A) talc and (B) talc/magnetite nanocomposites.