Controllable synthesis of β-Mn2V2O7 microtubes and hollow microspheres

• 来源期刊: 中国高等学校学术文摘·化学
• 关键词: vanadate microtubes hollow microspheres
• 年，卷（期）: 2008,（4）
• 页码范围: 467-470
• 页数: 4页
• 语种: 英文
• DOI: 10.1007/s11458-008-006t-9

摘要

β-Mn2V2O7 microtubes with a length of 15-25 μm, 2.5-3.5μm external diameter, and～0.4μm wall thickness, as well as β-Mn2V2O7 hollow microsphereswith an average outer diameter of 2 μm, were successfully synthesized in a suitable molar ratio of NH4VO3 and MnCO3 powders via a hydrothermal process. X-ray pow-der diffraction (XRD) and field emission scanning elec-tron 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 β-Mn2V2O7 microtubes and hollow microspheres.