Transition of chromium oxyhydroxide nanomaterials to chromium oxide: a hot-stage Raman spectroscopic study
作者： Jing Jeanne Yang , Wayde N. Martens , Ray L. Frost
DOI: 10.1002/JRS.2773
关键词: Nanomaterials 、 Physical chemistry 、 Hydrogen bond 、 Hydroxide 、 Thermal treatment 、 Diffraction 、 Chromium 、 Inorganic chemistry 、 Raman spectroscopy 、 Transmission electron microscopy 、 Materials science 、 Spectroscopy 、 General Materials Science
摘要: The transition of disc-like chromium hydroxide nanomaterials to oxide has been studied by hot-stage Raman spectroscopy. structure and morphology α-CrO(OH) synthesised using hydrothermal treatment were confirmed X-ray diffraction (XRD) transmission electron microscopy (TEM). spectrum is characterised two intense bands at 823 630 cm−1 attributed ν1 CrIIIO symmetric stretching mode the band 1179 CrIIIOH δ deformation modes. No are observed above 3000 cm−1. absence characteristic OH vibrations may be due short hydrogen bonds in structure. Upon thermal α-CrO(OH), new 599, 542, 513, 396, 344 304 cm−1, which Cr2O3. This study shows that Cr2O3 occurs before 350 °C. Copyright © 2010 John Wiley & Sons, Ltd.
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