高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (12): 2204-2207.

• 研究论文 • 上一篇    下一篇

纳米铋酸钠的合成及其结构表征

潘军青, 万平玉, 孙艳芝, 王子镐, 刘小光   

  1. 北京化工大学理学院, 北京100029
  • 收稿日期:2004-08-16 出版日期:2004-12-24 发布日期:2004-12-24
  • 基金资助:

    北京市自然科学基金(批准号:2002018)资助

Synthesis and Structural Characterization of Nano-NaBiO3

PAN Jun-Qing, WAN Ping-Yu, SUN Yan-Zhi, WANG Zi-Hao, LIU Xiao-Guang   

  1. Faculty of Science, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2004-08-16 Online:2004-12-24 Published:2004-12-24

摘要: 采用次氯酸钠浓溶液在强搅拌条件下和强碱性环境中氧化硝酸铋,得到纳米铋酸钠晶体.研究结果表明,反应过程中的中间产物氢氧化铋的粒度及分散性能是影响铋酸钠制品的粒度及分散性能的关键因素.研究了次氯酸钠浓度、硝酸铋浓度和反应时间对纳米铋酸钠制品的粒度和纯度的影响,得出了最佳的合成条件.采用化学分析、TEM、IR、TG-DSC和XRD等测试手段证实样品的化学组成为NaBiO3·2H2O,是粒径为30~50nm的纳米级鳞片状晶体.

关键词: 铋酸钠, 纳米材料, 氧化合成

Abstract: Nano-NaBiO3 crystals were prepared by oxidizing Bi(NO3)3 in strongly alkaline concentrated sodium hypochlorite solution with a strong agitation. The results indicates that the particle size and dispersity of the intermediate product, Bi(OH)3, are the key factors for the preparation of NaBiO3. The optimal synthesis conditions were obtained through studying the influence of the concentration of sodium hypochlorite and bismuth nitrate solution and reaction time on the purity and granularity of NaBiO3. The structure of NaBiO3 was characterized by TEM, infrared spectroscopy, X-ray diffraction and thermogravimetry. The analysis results reveal that the product is NaBiO3·2H2O and its particle size is 30~50 nm.

Key words: Sodium bismuthate, Nano materials, Oxidation synthesis

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