The microstructure and morphology of the nano-scale CeO_2 and Co_3O_4 were investigated by means of XRD, TEM and BET.

• 以六水合硝酸亚钴为原料；碳酸铵为沉淀剂；采用均相沉淀法在不同反应条件下；合成纳米Co3O4.；用XRD；TEM；BET等手段测定产品的形貌和纳米尺度