Journal
MATERIALS LETTERS
Volume 121, Issue -, Pages 234-237Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2014.01.055
Keywords
Manganese oxide; Nanocrystalline materials; Porous materials
Funding
- National Natural Science Foundation of China [21306026]
- Natural Science Foundation of Guangdong Province [10251009001000003, S2012010009680]
- Fund of Higher Education of Guangdong Province [cgzhzd1104]
- Foundation for Distinguished Young Talents in Higher Education of Guangdong [[2013]412]
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Ultralong alpha-MnO2 nanowires with length longer than 100 mu m have been prepared in gram-scale using a facile hydrothermal method without any template. The MnO2 was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) and high resolution TEM (HRTEM). Time-dependent experiment was made to study the growth process of the nanowires. The ultralong nanowires were assembled into free-standing membrane through hydrogen bond and used for adsorption of methyl violet. The MnO2 nanowires exhibited excellent absorption ability and reusability for the dye of methyl violet. Even within 5 cycles, the absorption rate of mu-MnO2 maintains still as high as 99%. (C) 2014 Elsevier B.V. All rights reserved.
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