Pyrolysis synthesis of magnetic - and -MnO2 nanostructures and the polymorph discrimination |
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| Authors: | Yankuan Liu Han Wang Yongchun Zhu Xiaoqing Wang Xiaoyan Liu Haibo Li Yitai Qian |
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| Affiliation: | aHefei National Laboratory for Physical Science at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China |
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| Abstract: | The concentration of the Mn(NO3)2 solution has significant influence on the morphologies and the phases of the MnO2 products. A large number of ε- MnO2 nanowires were prepared via a simple pyrolysis under lower reaction concentration. The nanowires have lengths up to tens of micrometers and diameters in the range of 20–100 nm. The β- MnO2 nanobundles and nanoflowers were prepared by increasing the concentration of Mn(NO3)2 solution. The superparamagnetism of ε- MnO2 nanowires and paramagnetism of β- MnO2 nanoflowers indicate their potential applications in magnetic materials. |
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| Keywords: | A. Nanostructures B. Chemical Synthesis C. Scanning and transmission electron microscopy D. Magnetic properties |
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