| Ferrihydrite的亚微观结构对反应活性的影响 |
| |
| 引用本文： | 马苗锐,杨丽娟,刘倩,刘辉,魏雨. Ferrihydrite的亚微观结构对反应活性的影响[J]. 物理化学学报, 2008, 24(12): 2282-2286. DOI: 10.3866/PKU.WHXB20081222 |
| |
| 作者姓名： | 马苗锐 杨丽娟 刘倩 刘辉 魏雨 |
| |
| 作者单位： | College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050016, P. R. China; Key Laboratory of Inorganic Nanomaterial of Hebei Province, Shijiazhuang 050016, P. R. China |
| |
| 基金项目： | 国家自然科学基金 ， 河北省自然科学基金 ， 河北师范大学博士科研基金 ， 河北师范大学校重点基金 |
| |
| 摘 要： | 以Fe(III)盐为原料、NaOH为沉淀剂、采用三种方法调控制备了ferrihydrite, 借助X射线衍射(XRD)、红外光谱(IR)、差热分析(DTA)及其在稀盐酸中的溶解速率等手段对其结构进行了表征, 探讨了ferrihydrite的形成环境对其亚微观结构及其反应活性的影响. 结果表明, 不同方法制备的ferrihydrite的亚微观结构不同, 恒pH条件下制备的ferrihydrite结构与α-Fe2O3结构最为相似, 更易转化为α-Fe2O3粒子.
|
| 关 键 词： | Ferrihydrite 亚微观结构 α-Fe2O3 反应活性 |
| 收稿时间： | 2008-07-21 |
| 修稿时间： | 2008-09-13 |
Effect of Ferrihydrite Sub-microstructure on Its Reactivity |
| |
| MA Miao-Rui,YANG Li-Juan,LIU Qian,LIU Hui,WEI Yu. Effect of Ferrihydrite Sub-microstructure on Its Reactivity[J]. Acta Physico-Chimica Sinica, 2008, 24(12): 2282-2286. DOI: 10.3866/PKU.WHXB20081222 |
| |
| Authors: | MA Miao-Rui YANG Li-Juan LIU Qian LIU Hui WEI Yu |
| |
| Affiliation: | College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050016, P. R. China; Key Laboratory of Inorganic Nanomaterial of Hebei Province, Shijiazhuang 050016, P. R. China |
| |
| Abstract: | Ferrihydrite was prepared by three procedures using Fe(III) as a raw material and NaOH as a precipitant. X-ray diffraction (XRD), infrared (IR) spectroscopy, differential thermal analysis (DTA), and kinetic dissolution in an acidic medium were employed to characterize the ferrihydrite synthesized by different methods. The effect of ferrihydrite sub-microstructure on its reactivity was investigated. The results showed that the sub-microstructure and the reactivity of ferrihydrite were related to the different preparation procedures. The structure of ferrihydrite prepared by adding Fe(III) and NaOH solutions to water simultaneously and at a constant pH is so similar to the structure of hematite that it easily transforms into hematite particles. |
| |
| Keywords: | Ferrihydrite |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《物理化学学报》浏览原始摘要信息 |
|
点击此处可从《物理化学学报》下载全文 |
|
