The structural characterization of v _ 2o _ 5 compounds were measured bymeans of differential thermoanalysis ( dta ) and thermogravimetry ( tg ) , scanning electron microscopy ( sem ) , and x - ray diffraction ( xrd ) . the testsreveale that materials which were prepared by sol - gel ( inorganic sol gel andmelting - coling ) showed that the amorphous structure , and the interlayer spacingenlarge a lot than that of crystalline v _ 2o _ 5 采用热重与差热( tg - dta ) ，扫描电子显微镜( sem ) ， x射线衍射( xrd )等测试手段对材料的结构性能进行表征，结果显示两种溶胶-凝胶法(无机溶胶凝胶法和熔融淬冷法)制备的v _ 2o _ 5材料均为无定型结构，其层面间距均比晶体v _ 2o _ 5成倍增大。
