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Citation: 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 shu

Effect of Ferrihydrite Sub-microstructure on Its Reactivity

1.
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

Received Date: 21 July 2008
Available Online: 22 October 2008

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.
- Ferrihydrite,
- Sub-microstructure,
- Hematite,
- Reactivity
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