【摘要】 采用水热法制备出亚微尺寸Fe3O4空心球。用X射线衍射谱(XRD)和傅里叶红外光谱(FT-IR)表征了样品的相结构,用透射电子显微镜(TEM)和场发射扫描电子显微镜(FESEM)照片表征样品的形貌,表明在一定反应条件(反应温度、反应时间、反应试剂)下,反应产物可形成不同的形貌:针叶状的纳米颗粒、亚微尺寸的疏松球、实心球和空心球等。用振动样品磁强计(VSM)测量了样品的室温磁性,表明Fe3O4亚微空心球样品表现为铁磁性。更多还原

【Abstract】 Fe3O4 submicrometer hollow spheres were prepared by a simple hydrothermal route,and characterized by X-ray powder diffraction(XRD)spectra,fourier transform-infrared(FTIR)spectra,transmission electron microscopy(TEM),field-emission scanning electron microscopy(FESEM) and vibrating sample magnetometer(VSM).FTIR and XRD results reveal the state of matter and crystal structure of the as-prepared Fe3O4 particles.TEM and FESEM images show that the products have different shapes when the reaction condition is different.Magnetic hysteresis loop indicates that the as-prepared Fe3O4 hollow spheres exhibit a ferromagnetic behavior.更多还原