Sustainable Method for the Large-Scale Preparation of Fe3O4 Nanocrystals

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• 作者：SungWoo Lee ; Jae-Sik Yoon ; Sungkyoung Kang ; Kihyun Kwon ; Ki Soo Chang ; SangGap Lee ; Sang-Il Choi ; Jong-Ryul Jeong ; Gaehang Lee and Ki Min Nam
• 刊名：Journal of the American Ceramic Society
• 出版年：2016
• 出版时间：August 2016
• 年：2016
• 卷：99
• 期：8
• 页码：2578-2584
• 全文大小：1358K
• ISSN：1551-2916

文摘

In this work, a facile synthetic process is reported for the large-scale synthesis of Fe₃O₄ nanocrystals. Thermal decomposition of Fe(acac)₃ (100 g) in 1-hexadecanol produced Fe₃O₄ nanocrystals with well-controlled sizes and morphologies. The nanocrystals were spherically shaped with average diameters of 7.8 ± 0.6, 6.5 ± 0.4, and 5.9 ± 0.2 nm when prepared at 300°C, 270°C, and 250°C, respectively. Mechanisms of crystal formation were elucidated on the basis of gas chromatography-mass spectroscopy analysis, enabling the large-scale preparation of Fe₃O₄ nanocrystals. To provide an environmentally benign route, Fe₃O₄ nanocrystals were prepared with recycled solvent which was recovered from the initial experiment. The resulting porous Fe₃O₄ nanocrystals had larger average sizes than those of the initial nanocrystals. Structural characterization was performed using transmission electron microscopy and powder X-ray diffraction.