کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1645185 1517284 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structural refinement and morphology of synthetic akaganèite crystals, [β-FeO(OH)]
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Structural refinement and morphology of synthetic akaganèite crystals, [β-FeO(OH)]
چکیده انگلیسی


• 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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 104, 1 August 2013, Pages 17–20
نویسندگان
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