采用傅里叶变换红外光谱（FTIR）和紫外可见漫反射光谱对通过湿化学（WC）法由氯化钴（CoCl₂）和氯化铁（FeCl₃）合成的纳米结构四氧化三钴铁（CoFe₂O₄）进行的研究 。
FTIR and UV-vis diffuse reflectance spectroscopy studies of the wet chemical (WC) route synthesized nano-structure CoFe(2)O(4) from CoCl(2) and FeCl(3).
作者信息
Habibi Mohammad Hossein, Parhizkar Hadi Janan
机构信息
Nanotechnology Laboratory, Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Islamic Republic of Iran.
Nanotechnology Laboratory, Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Islamic Republic of Iran.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2014 Jun 5;127:102-6. doi: 10.1016/j.saa.2014.02.090. Epub 2014 Feb 28.
Nano-structure CoFe(2)O(4) has been fabricated by wet chemical route using CoCl2 and FeCl3 as simple precursors. The prepared nano-structure samples was calcined at 600°C and characterized by fourier transform infrared spectra (FTIR), UV-vis diffuse reflectance spectroscopy (DRS), X-ray powder diffractometry (XRD), and field emission scanning electron microscopy (FESEM). X-ray diffraction patterns confirmed the presence of the spinel phases with average crystallite sizes of 47nm. Field emission scanning electron microscopy investigations showed spherical morphology of nanoparticles with average particle size of 46nm. The FTIR spectra of CoFe(2)O(4) nanoparticles showed absorption bands at about 594cm(-1) and 401cm(-1) due to the stretching vibrations of Co-O and Fe-O respectively. Investigation of the optical properties of the produced nano-structure CoFe(2)O(4) confirmed its semiconducting properties by revealing two optical band gaps at 1.4 and 2.0eV.
采用湿化学法，以氯化钴和氯化铁作为简单前驱体，制备了纳米结构的CoFe₂O₄。将制备的纳米结构样品在600°C下煅烧，并通过傅里叶变换红外光谱（FTIR）、紫外-可见漫反射光谱（DRS）、X射线粉末衍射（XRD）和场发射扫描电子显微镜（FESEM）进行表征。X射线衍射图谱证实了尖晶石相的存在，平均晶粒尺寸为47nm。场发射扫描电子显微镜研究表明，纳米颗粒呈球形，平均粒径为46nm。CoFe₂O₄纳米颗粒的FTIR光谱分别在约594cm⁻¹和401cm⁻¹处出现吸收带，这是由于Co-O和Fe-O的伸缩振动所致。对所制备的纳米结构CoFe₂O₄的光学性质进行研究，通过揭示1.4和2.0eV的两个光学带隙，证实了其半导体性质。
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