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化学学报
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化学学报 ›› 2003, Vol. 61 ›› Issue (11): 1849-1853. 上一篇    下一篇

研究论文

湿法制备纳米晶Co3O4及其微观结构研究

王新喜;吕光烈;曾跃武;胡秀荣;陈林深   

  1. 浙江大学中心试验室
  • 发布日期:2003-11-15

Studies on the Nanocrystalline Co_3O_4 by Wet Synthesis and Its Microstructure

Wang Xinxi;Lu Guanglie;Zeng Yuewu;Hu Xiurong;Chen Linshen   

  1. Central Laboratory, Zhejiang University
  • Published:2003-11-15

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616

被引次数

43 | 10

采用[Co(NH_3)_B]~(3+)和Co~(2+)在温度50～90 ℃，pH=9～11条件下制备了 纳米晶Co_3O_4.X射线衍射仪（XRD）、透射电镜(TEM)分析表明：产物为尖晶石油 型结构，空间群Fd3m，晶胞参数a=0.80777(5)nm，氧参数μ=0.3895(7)，形貌为球 形，晶粒尺寸约为4～30nm。研究了反应温度对其晶粒大小和分布、形貌、结晶度 等微观结构的影响，并初步探讨了反应机理和生长机制。

关键词: 氧化钴, 纳米相材料, 微观结构, X射线衍射分析, 透射电子显微术, 晶体结构, 反应机理

The nanocrystalline Co3O4 was prepared at 50 ~ 90 °C and pH = 9 ~ 11 using [Co(NH3)6]3+ and Co2 + ions. X-ray diffraction (XRD) and transmission electron microscopy (TEM) analysis indicated that the product was spinel-type with the space group Fd3m. The lattice constant is 0.80777(5) nm, and the oxygen parameter p. = 0.3895(7). The shape of the crystallite is spheric and the size of that is about 4 ~ 30 nm. The effect of temperature on the microstructure of the crystallite, such as the crystallite size and the distribution, the shape and the crystallinity were investigated. The mechanism of the formation and the growth of the crystallite were also discussed.

Key words: COBALT OXIDE, NANOPHASE MATERIALS, MICRO-STRUCTURE, XRD, TEM, CRYSTAL STRUCTURE, REACTION MECHANISM

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