Abstract
The hydrophilic phenol formaldehyde resin coated Fe 3O 4 nanocrystals are prepared via a novel one-step solvothermal approach at 160 °C for 6–9 h without inert gas protection. Water–glycol mixture is used as solvent in common air surrounding. FeSO 4·7H 2O, hexamethylenetetramine and phenol are used as resource materials without any others additives or surfactants. The transmission electronic microscope images show the samples are composed of sphere-like particles with sizes about 10–20 nm. The X-ray diffraction data indicate cube-phase Fe 3O 4 nanocrystals are obtained at given conditions. Fourier transform infrared spectra further reveal the samples are consisted of Fe 3O 4 and PFR. Without modified pH and added surfactants, the solubility of the obtained sample is over 1% in water, which is far more than its solubility in toluene. Room-temperature hysteresis loop indicate that the as-obtained nano-crystals possess soft magnetic properties with high saturated mass magnetization (50.6 emu/g) and negligible coercivity.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
