Development of porous 伪-Fe₂O₃ microstructure by forced hydrolysis of FeCl₃ solutions in the presence of AOT

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• 作者：Jasenka &Scaron ; tajdohar ; Mira Risti膰 ; ^{ristic@irb.hr} ; Svetozar Musi膰
• 关键词：尾-FeOOH ; 伪-Fe2O3 ; AOT ; XRD ; Spectroscopy ; FE-SEM
• 刊名：Journal of Alloys and Compounds
• 出版年：2012
• 期刊代码：45_09258388
• 类别：ms
• 出版时间：15 August, 2012
• 卷：532
• 期：Complete
• 页码：41-48
• 文件大小：1486 K

摘要

The effect of AOT (sodium di-2-ethylhexyl sulfosuccinate) on the formation and microstructure of 伪-Fe₂O₃ by the forced hydrolysis of FeCl₃ solutions was investigated. The precipitates formed were characterized by XRD, ⁵⁷Fe M枚ssbauer, FT-IR and optical spectroscopies, and also with FE-SEM. The presence of AOT influenced the shape of 尾-FeOOH particles and led to the formation of microporous 伪-Fe₂O₃. The preferential adsorption of sulfonate/sulfate groups played an important role in these effects. Generally, the ⁵⁷Fe M枚ssbauer and optical spectra were sensitive to low crystallinity, as well as to the particle size and shape.