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Controllable synthesis of -MnVO microtubes and hollow microspheres |
| LIU Yi1, QIAN Yitai2 |
| 1.Department of Chemistry, University of Science and Technology of China; 2.Department of Chemistry, Zaozhuang University; |
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Abstract ?-Mn2V2O7 microtubes with a length of 15–25 ?m, 2.5–3.5 ?m external diameter, and ∼ 0.4 ?m wall thickness, as well as ?-Mn2V2O7 hollow microspheres with an average outer diameter of 2 ?m, were successfully synthesized in a suitable molar ratio of NH4VO3 and MnCO3 powders via a hydrothermal process. X-ray powder diffraction (XRD) and field emission scanning electron microscopy (FESEM) were used to characterize the products, and the magnetic susceptibility curve was also measured. In the whole process, the concentration of Mn2+ cations derived from MnCO3 dissolution plays a crucial role in the formation of ?-Mn2V2O7 microtubes and hollow microspheres.
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Issue Date: 05 December 2008
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