کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1333690 | 979091 | 2005 | 8 صفحه PDF | دانلود رایگان |
Single-crystalline nanorods of γ-MnOOH (manganite) phase with diameters of 120 nm and lengths of 1100 nm have been prepared using a new cluster growth route under low-temperature hydrothermal conditions starting from [Mn12O12(CH3COO)16(H2O)4]·2CH3COOH·4H2O or [Mn12O12(C2H5COO)16(H2O)3]·4H2O without any catalyst or template agents. The so-obtained nanorods were studied by X-ray diffraction (XRD), infrared (IR) spectroscopy, Raman spectroscopy and high resolution transmission electron microscopy (HRTEM). Their thermal conversion opens an access to Mn3O4 (hausmannite) and β-MnO2 (pyrolusite) nanorods, respectively, under argon or air atmosphere. A coercive field of 12.4 kOe was obtained for the Mn3O4 nanorods.
Synthesis of MnOOH Nanorods by Cluster Growth Route from [Mn12O12(RCOO)16(H2O)n] (R=CH3, C2H5). Rational Conversion of MnOOH into Mn3O4 or MnO2 Nanorods.Figure optionsDownload as PowerPoint slide
Journal: Journal of Solid State Chemistry - Volume 178, Issue 7, July 2005, Pages 2368–2375