Nanoparticles of polystyrene/α Fe 2O 3 composites were prepared by method of insertion in sodium dodecylbenzene sulfonate(SDBS) micellar system. The orange α Fe 2O 3 particles of about 6 nm were first prepared from ...Nanoparticles of polystyrene/α Fe 2O 3 composites were prepared by method of insertion in sodium dodecylbenzene sulfonate(SDBS) micellar system. The orange α Fe 2O 3 particles of about 6 nm were first prepared from 0 25 mol/L FeCl 2 and (NH 3) 2CO 3 in 0.1% surfactant solution at pH=4, 105 ℃ for 10 h. The title nanoparticles were prepared then in conditions of SDBS∶ styrene∶H 2O(mass fraction)=0 1∶1∶9, 85 ℃, 8 h, using ammonium persulfate(APS) as an initiator. The composite nanoparticles sized in 20～50 nm and showed magnetic property.展开更多
α-Fe2O3 nanoparticles were successfully prepared by a sonochemical method in FeCl3-NH3 complex solution.The obtained sample was examined and investigated by XRD,TEM,FT-IR,FT-Raman and XPS techniques.The results showe...α-Fe2O3 nanoparticles were successfully prepared by a sonochemical method in FeCl3-NH3 complex solution.The obtained sample was examined and investigated by XRD,TEM,FT-IR,FT-Raman and XPS techniques.The results showed that the spherical,well-dispersed α-Fe2O3 nanoparticles were obtained with the average size of 15nm.The possible formation mechanism of α-Fe2O3 nanoparticles were also discussed,which indicated that this for the preparation of the nanoparticles method can be used for α-Fe2O3 preparation with some practical and universal significance.展开更多
文摘Nanoparticles of polystyrene/α Fe 2O 3 composites were prepared by method of insertion in sodium dodecylbenzene sulfonate(SDBS) micellar system. The orange α Fe 2O 3 particles of about 6 nm were first prepared from 0 25 mol/L FeCl 2 and (NH 3) 2CO 3 in 0.1% surfactant solution at pH=4, 105 ℃ for 10 h. The title nanoparticles were prepared then in conditions of SDBS∶ styrene∶H 2O(mass fraction)=0 1∶1∶9, 85 ℃, 8 h, using ammonium persulfate(APS) as an initiator. The composite nanoparticles sized in 20～50 nm and showed magnetic property.
文摘α-Fe2O3 nanoparticles were successfully prepared by a sonochemical method in FeCl3-NH3 complex solution.The obtained sample was examined and investigated by XRD,TEM,FT-IR,FT-Raman and XPS techniques.The results showed that the spherical,well-dispersed α-Fe2O3 nanoparticles were obtained with the average size of 15nm.The possible formation mechanism of α-Fe2O3 nanoparticles were also discussed,which indicated that this for the preparation of the nanoparticles method can be used for α-Fe2O3 preparation with some practical and universal significance.
