| 均匀Fe~3O~4胶体粒子形成机理II. 低温Mossbauer谱研究 |
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| 引用本文： | 姜继森,徐鸿志,陈龙武,杨燮龙,诸蕾,方允樟. 均匀Fe~3O~4胶体粒子形成机理II. 低温Mossbauer谱研究[J]. 化学学报, 1994, 52(1): 47-52 |
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| 作者姓名： | 姜继森 徐鸿志 陈龙武 杨燮龙 诸蕾 方允樟 |
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| 作者单位： | 华东师范大学化学系;华东师范大学物理学系 |
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| 摘 要： | 在液氮温度下, 测定了均匀Fe~3O~4胶体粒子制备过程中陈化时间为1小时内的不同时间所得样品的Mossbauer谱。结果表明, γ-FeOOH为Fe~3O~4均匀胶粒形成过程的中间产物, 并提出均匀Fe~3O~4胶粒的形成机理。
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| 关 键 词： | 氧化镁 胶体 穆斯堡尔谱法 形成机理 |
Mechanism of formation of uniform magnetite colloidal particles II. A sutyd of mossbauer spectroscopy at low temperature |
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| JIANG JISHUN,XU HONGZHI,CHEN LONGWU,YANG XIELONG,ZHU LEI,FANG YUNZHANG. Mechanism of formation of uniform magnetite colloidal particles II. A sutyd of mossbauer spectroscopy at low temperature[J]. Acta Chimica Sinica, 1994, 52(1): 47-52 |
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| Authors: | JIANG JISHUN XU HONGZHI CHEN LONGWU YANG XIELONG ZHU LEI FANG YUNZHANG |
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| Abstract: | During the preparation of uniform magnetite colloid particles, a series of samples aged for different times ?1 h were obtained by abruptly lowering the temperature The Moessbauer spectra of these samples were measured at liquid N temperature g-FeOOH was the intermediate product in the formation of uniform magnetite colloid particles. The mechanism of formation of magnetite colloid particles is: Fe2+ (OH-) ?Fe(OH)2 (NO3-, O2) ?g-FeOOH ?Fe3-aOr (ultrafine particles) (coagulation) ?Fe3-aO4 (uniform colloid particles) (Fe3+, Fe2+) ?Fe3O4 (uniform colloid particles). |
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| Keywords: | MAGNESIUM OXIDE COLLOID MOSSBAUER SPECTROMETRY FORMATION MECHANISM |
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