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14. Hydrothermal synthesis and magnetic properties of α-MnO2 nanowires

Author

Zhao, J.G., Yin, J.Z., and Yang, S.G.

Subjects
*MAGNETIC properties of metals, *MAGNESIUM oxide, *NANOWIRES, *X-ray diffraction, *MICROMETERS, *FERROMAGNETIC materials, *SURFACE area
Abstract

Abstract: In the present study, one-dimensional (1D) α-MnO2 nanowires with width of 50–60nm, length about several micrometers have been successfully prepared under hydrothermal conditions in the presence of sodium carboxymethyl cellulose. The samples were characterized by X-ray diffraction, scanning electron microscope, superconducting quantum interference device and N2 adsorption–desorption experiment. The magnetic measurement reveals that the α-MnO2 nanowires exhibit a ferromagnetic behavior at 5K and a paramagnetic behavior at 300K. The N2 adsorption–desorption experiment shows that surface area is 160.4m2 g−1, which is even larger than those of mesoporous nanostructures. At the same time, the possible formation mechanism for the formation of α-MnO2 nanowires has been proposed according to the experimental results. [Copyright &y& Elsevier]

Published
2012
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