Synthesis of Highly Dispersed Fe₃O₄ Submicrometer Spheres in a One-Pot Anion-induced Solvothermal System

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• 作者：Peng Huang ; Ting Yin ; Qian Zhang ; Guo Gao ; Joseph G. Shapter ; Cameron J. Shearer ; Chunlei Zhang ; Wen Qi and Daxiang Cui
• 刊名：Journal of the Chinese Chemical Society
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：64
• 期：2
• 页码：217-223
• 全文大小：639K
• ISSN：2192-6549

文摘

A facile, anion-induced, one-pot solvothermal method was successfully developed to prepare two kinds of highly dispersed magnetic Fe₃O₄ submicrometer spheres at 200°C in 12 h. The diameters of the as-prepared Fe₃O₄ submicrometer spheres are ~500 and ~200 nm, respectively. With the guidance of OAc ⁻ ions, the size and morphology of the Fe₃O₄ spheres could be well controlled. The saturation magnetization of the Fe₃O₄ spheres was measured to be 84 and 74 emu/g, respectively. The assembly of tiny precursor nuclei into the Fe₃O₄ spheres relies on Ostwald ripening. The synthesized Fe₃O₄ submicrometer spheres show good magnetic response, good water solubility, and uniform size.