摘 要: 为获得粒径小且分布均匀的铁酸铜(CuFe₂O₄)粉体, 本文中以 硝酸铜、硝酸铁及氢氧化钠为反应原料, 采用水热法合成了纳米 CuFe₂O₄ 粉体, 研究了前驱体组分、反应温度、保温时间和表面活性剂 聚乙烯醇(PVA)对 CuFe₂O₄ 粉体制备的影响; 用 X 射线衍射 (XRD)、 粒度分析仪、扫描电子显微镜(SEM)和红外光谱(IR)等分析方法对样 品进行了表征。结果表明, 前驱体中 NO₃^-的存在将导致产物中铁酸亚 铜 CuFeO₂ 的产生; 在反应温度为 320 ℃、以 PVA 作分散剂、保温 3 h 的水热条件下可合成纳米 CuFe₂O₄ 粉体。 

关键词: 铁酸铜; 纳米粒子; 水热合成

Abstract: In order to obtain ultrafine well-proportioned CuFe₂O₄ pow der, the nano-sized CuFe₂O₄ was prepared by hydrothermal method with the materials of Cu(NO₃)₂·3H₂O , Fe(NO₃)₃·9H₂O and NaOH. The influ ences of precursory components, reaction temperature, reaction time and surfactant PVA on the formation of CuFe₂O₄were studied. The samples were measured by XRD, particle size analyzer, SEM and IR techniques. The results indicated that CuFeO₂ could be produced because of the exis tence of NO₃^- in the precursor, the nano-sized CuFe₂O₄ powders would be obtained at the hydrothermal condition of 320 ℃, 3 h and the dispersant of PVA. 

Keywords: copper ferrite; nano-particles; hydrothermal synthesis