Synthesis of monodisperse organic- and water-soluble iron oxide nanoparticles using Fe(OH)₃ as precursor

Figures & data

Figure 1. TEM image of rod-like nanoparticles (a) dispersed in hexane and its corresponding HRTEM image (b).

Figure 2. TEM image of co-existed rod-like and monodisperse nanoparticles.

Figure 3. TEM images of 12 (a), 15 (b) and 18 nm (c) nanoparticles and HRTEM image (d) of 18 nm nanoparticles. The refluxing time is 30 min.

Figure 4. TEM images of 20 (a), 22 (b) and 25 nm (c) nanoparticles for prolonged reaction time. The molar ratio of oleic acid to Fe(OH)₃ is fixed at 6.4.

Figure 5. TEM image of water-soluble nanoparticles.

Figure 6. FTIR spectra of rod-like (a), organic-(b) and water-soluble (c) nanoparticles.

Figure 7. XRD patterns of Fe(OH)₃ (a), rod-like (b), organic- (c) and water-soluble (d) nanoparticles.

Figure 8. Hysteresis loops at room temperature for rod-like (a), organic- (b) and water-soluble (c) nanoparticles.