A FeCO3 Precursor-Based Route to Microsized Peanutlike Fe3O4

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• 作者：Shouhu Xuan ; Lingyun Hao ; Wanquan Jiang ; Lei Song ; Yuan Hu ; Zuyao Chen ; Lingfeng Fei ; Tanwei Li
• 刊名：Crystal Growth & Design
• 出版年：2007
• 出版时间：February 2007
• 年：2007
• 卷：7
• 期：2
• 页码：430 - 434
• 全文大小：641K
• 年卷期：v.7,no.2(February 2007)
• ISSN：1528-7505

文摘

It is reported in this paper that a microsized magnetic particle Fe₃O₄ with peanutlike morphology is successfullyprepared from FeCO₃ with the same morphology via direct-sealed thermal decomposition. The peanutlike FeCO₃ is obtained byhydrothermal reaction of the mixed aqueous solution containing Fe³⁺ and CO₃^2- in the presence of ascorbic acid. The dynamicformation process of the FeCO₃ precursor and influence of reaction conditions on the FeCO₃ morphology are discussed in detail.The results show that both concentrations of ascorbic acid and Fe³⁺ in the reactive system play critical roles in obtaining peanutlikemorphology. With this method, other microsized Fe₃O₄ or Fe₂O₃ with ellipsoidal, ellipsoidal rods, or rodlike morphologies couldalso be developed.