Study on the Synthesis of Cyanex 301-modified Fe2O3 Nano-particles

摘要

In this paper, surface modified Fe2O3 nano-particles were successfully synthesized via different thermal treatment methods from the Fe(III)- Cyanex 301 precursor. The Fe3+ ions were extracted into gasoline by the extractant Cyanex 301 firstly, then the extracted solution containing Fe(III)- Cyanex 301 complex was precipitated with NaOH solution. The obtained Fe(OH)3- Cyanex 301 precursor was given different thermal treatments, such as solvothermal reaction in a Teflon-lined stainless autoclave at 180℃, an intense refluxing boiling tetralin and calcine at 600 ℃respectively. The obtained Fe2O3 nano-particles were characterized by (X-ray powder diffraction) XRD, (transmission electron microscopy) TEM, (scanning electron microscopy) SEM, (infrared ray) FT-IR, (ultraviolet-visible absorption spectra) UV-vis and (thermal gravimetric analysis) TG-DTG, respectively, showing that Fe2O3 products were well-modified by Cyanex 301. The obtained Fe2O3 nano-particles could be dispersed well into organic solvents again due to the high affinity with non-polar solvent with the R groups in Cyanex 301.