کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1329320 | 978904 | 2009 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Single-crystalline α-Fe2O3 with hierarchical structures: Controllable synthesis, formation mechanism and photocatalytic properties Single-crystalline α-Fe2O3 with hierarchical structures: Controllable synthesis, formation mechanism and photocatalytic properties](/preview/png/1329320.png)
A dual iron precursors system in a hydrothermal process was developed for controllable fabrication of α-Fe2O3 hierarchical structures with different morphologies. Micro-pines, snowflakes and bundles were successfully synthesized simply by tuning the total concentration of the two iron precursors K4[Fe(CN)6] and K3[Fe(CN)6] and their molar ratio. The obtained α-Fe2O3 hierarchical structures were characterized using field-emission scanning electron microscopy, transmission electron microscopy, X-ray powder diffraction, X-ray photoelectron spectroscopy and energy-dispersive X-ray analysis. The effect of experimental conditions on the morphologies of the α-Fe2O3 crystals was systematically investigated. A possible formation mechanism of different α-Fe2O3 hierarchical structures was proposed. Good photocatalytic properties were observed for all the hierarchical structures.
A dual iron precursors system in a hydrothermal process was developed for controllable fabrication of various α-Fe2O3 hierarchical structures. Micro-pines, snowflakes and bundles were successfully fabricated by simply tuning the total concentration of the two iron precursors and their molar ratio. A possible formation mechanism of these structures was proposed.Figure optionsDownload as PowerPoint slide
Journal: Journal of Solid State Chemistry - Volume 182, Issue 5, May 2009, Pages 1265–1272