纳米级MoO_3微粉的制备与性质

Preparation and Characterization of Nanometer-sized Ultrafine Powers MoO_3

以 (NH4 ) 6Mo7O2 4 ·4H2 O和HAc为原料 ,制备了纳米级MoO3 微粉 ,用电镜观察其形貌和粒径的大小 ,并进行X射线衍射分析。在制备过程中 ,通过严格控制溶液的浓度、酸度等条件 ,首先得到纤维状的酸式仲钼酸铵 (NH4 ) 4H2 Mo7O2 4 ·4H2 O和 (NH4 ) 3H3Mo7O2 4 ·4H2 O。并通过加热使其分解 ,从而获得纳米级MoO3

This paper presents the preparation of nanometer sized MoO 3 ultrafine powders by using (NH 4) 6Mo 7O 24 ·4H 2O and HAc as raw materials. The morphology and its size of the powders have been observed with SEM and analyzed with XRD. During the process of preparation, the fiber shaped (NH 4) 4H 2Mo 7O 24 ·4H 2O and (NH 4) 3H 3Mo 7O 24 ·4H 2O were obtained by strictly controlling the density and acidity of liquor, then they were decomposed and separated by heating. As a result, nanometer sized MoO 3 ultrafine powders were obtained.