Surfactants free synthesis of superparamagnetic magnetite (Fe3O4) nanoparticles : Spectroscopic, magnetic and AFM studies

被引:0
作者
Gautam, Ravindra Kumar [1 ]
Banerjee, Sushmita [1 ]
Gautam, Pavan Kumar [1 ]
Jaiswal, Amita [1 ]
Mani, Raj [1 ]
Singh, Dharmveer [1 ]
Pandey, J. D. [1 ]
Chattopadhyaya, Mahesh Chandra [1 ]
机构
[1] Univ Allahabad, Dept Chem, Environm Chem Res Lab, Allahabad 211002, Uttar Pradesh, India
关键词
Magnetite nanoparticles; colloidal method; superparamagnetic; TEM; AFM; SQUID;
D O I
暂无
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Superparamagnetic Fe3O4 nanoparticles with diameter of similar to 7 nm were prepared by a colloidal method, without employing surfactants and using precursors like FeCl3 center dot 6H(2)O, FeSO4 center dot 7H(2)O, deionized water and using NH4OH solution (29% vol.) as precipitating agent. The synthesized product was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy attached with energy dispersive X-ray (SEM-EDS), Fourier transform infrared spectroscopy (FT-IR), Brunauer-Emmett-Teller (BET) surface area, thermogravimetric analysis (TGA-DTG), and atomic force microscopy (AFM). The hysteresis loops of the magnetite nanoparticles were measured using a superconducting quantum interference device (SQUID) and the results showed a superparamagnetic behavior at room temperature.
引用
收藏
页码:649 / 654
页数:6
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