کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1645185 | 1517284 | 2013 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Structural refinement and morphology of synthetic akaganèite crystals, [β-FeO(OH)] Structural refinement and morphology of synthetic akaganèite crystals, [β-FeO(OH)]](/preview/png/1645185.png)
• Synthetic akaganèite prepared at 90 °C.
• The solid was characterized by XRD-Synchrotron light.
• Crystals formed have dimension of 200 nm and somatoidal morphology.
• The crystal size is the same for the products obtained at lower temperatures.
• Akaganèite synthesized at the temperature of 90 °C, different from what was suggested in past works, contains hematite as a contaminant.
In this study, the synthesis and characterization of the akaganèite, phase β-FeO(OH), was performed. Scanning electronic microscopy images revealed that the crystals formed in the first 4 h of hydrolysis had the same morphology as those of crystals formed at the end. X-ray diffractometry and vibrational spectra showed that the principal phase obtained from the hydrolysis of iron chloride at 90 °C was akaganèite. Rietvield refinement revealed that hematite formed along with the akaganèite at this temperature, in the proportion of 10% and 90%, respectively. Simultaneous thermal analysis showed the characteristic profile of only the akaganèite.
Journal: Materials Letters - Volume 104, 1 August 2013, Pages 17–20