以HCl和Na2MoO4·2H2O为原材料,不用任何模板剂的情况下,用简单的水热法成功地制备了正交相单晶α-MoO3纳米带.用X射线衍射仪、扫描电子显微镜、透射电子显微镜、紫外-可见光分光光度计对产物进行了表征.结果显示,α-MoO3纳米带是由低温条件下形成的亚稳相h-MoO3微米棒通过溶解-重结晶转变而来,其沿着c轴方向生长,加入表面活性剂CTAB可以提高α-MoO3纳米带的长径比.
Single crystal orthorhombic phase MoO3 (α-MoO3) nanobelts with uniform diameter were successfully prepared through a simple hydrothermal synthesis route at 180 ℃,using solution of sodium molybdate dihydrate as well as hydrochloric acid as raw materials and without template.The products were characterized by X-ray diffraction,field emission scanning electron microscopy and transmission electron microscopy.It can be concluded that the synthesized α-MoO3 nanobelts were transformed from the metastable phase h-MoO3 micro rods formed at low temperature (＜90 C) by dissolution-recrystallization,and grew along the caxis direction.Surfactant CTAB could increase aspect ratio of the prepared α-MoO3 nanobelts.
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