Fe3O4 nano-whiskers by ultrasonic-aided reduction in concentrated NaOH solution

作者：Yu Chenglong^*; Hao Xin; Jiang Hongtao; Wang Lili

来源：Particuology, 2011, 9(1): 86-90.

DOI：10.1016/j.partic.2010.06.003

• Fe3O4 nano-whiskers
• Morphology
• Homogeneity
• Two-dimensional fast Fourier transform

Fe3O4 nano-whiskers were synthesized via ultrasonic-aided reduction of FeCl2 center dot 4H(2)O with N2H4 center dot H2O in concentrated NaOH solution. Phase identification and morphology observation were conducted by X-ray diffraction (XRD) analysis, transmission electron microscopy (TEM) and field emission scanning electron microscopy (FE-SEM). Face scanning energy dispersive spectrum (face scanning EDS) and two-dimensional fast Fourier transform (2DFFT) for element distribution were carried out for confirming composition homogeneity. From XRD and TEM, the synthesized Fe3O4 nano-whiskers are of cubic phase with average dimension of 20 nm x 200 nm (average aspect ratio of 10). FE-SEM shows that the nanowhiskers without dispersion are interconnected into a network at a scale of 20 mu m. 2DFFT of the distribution of Fe and 0 from face scanning EDS confirms the composition homogeneity of the synthesized Fe3O4. Hydrazine hydrate determines the formation of the nano-whiskers, while the possible mechanism is the preferred growth along certain orientation with the aid of ultrasonic treatment.

• 出版日期2011-2
• 单位陕西科技大学