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化学学报
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化学学报 ›› 2009, Vol. 67 ›› Issue (10): 1057-1062. 上一篇    下一篇

研究论文

α-Fe(Ga)OOH的液相催化合成及表征

曹付玲a 马 燕a 刘 辉*,a,b 魏 雨*,a,b

  

  1. (a河北师范大学化学与材料科学学院 石家庄 050016)
    (b河北省无机纳米材料重点实验室 石家庄 050016)

  • 投稿日期:2008-03-28 修回日期:2008-11-01 发布日期:2009-05-28
  • 通讯作者: 刘辉

Catalytic Preparation and Characterization of α-Fe(Ga)OOH in Solution

Cao, Fuling a Ma, Yan a Liu, Hui *,a,b Wei, Yu* ,a,b   

  1. (a College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050016)
    (b Key Laboratory of Inorganic Nanomaterial of Hebei Province, Shijiazhuang 050016)
  • Received:2008-03-28 Revised:2008-11-01 Published:2009-05-28
  • Contact: Liu, Hui

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被引次数

9

采用液相催化相转化法, 以Fe(III)与Ga(III)的共沉淀为前驱物合成了α-Fe(Ga)OOH微粒. 探讨了镓离子的掺杂浓度和Fe(II)离子用量等因素对合成α-Fe(Ga)OOH微粒的影响, 并对产物进行了X射线衍射(XRD)、红外光谱(IR)、扫描电镜(SEM)、透射电镜(TEM)、电子衍射(ED)表征. 结果表明: 初始pH＝9, nFe(II)/nFe(III)＝0.02, nGa(III)/nFe(III)＝0.18时, 在沸腾回流条件下可制备出类多面体形的α-Fe(Ga)OOH微粒, 镓离子的掺杂对α-FeOOH的形成起了形貌调控作用, 电子衍射数据表明该α-Fe(Ga)OOH为单晶粒子.

关键词: 镓掺杂, α-Fe(Ga)OOH, 单晶粒子, 催化相转化

Polyhedral α-Fe(Ga)OOH particles were prepared by a catalytic phase transformation method using co-precipitate of Fe(III) and Ga(III) as a precursor. The effect of various factors such as the concentration of Ga(III) ions, the level of Fe(II) on the formation of these α-Fe(Ga)OOH particles was investigated. The product was characterized by XRD, IR, SEM, TEM and ED. The result shows that these α-Fe(Ga)OOH particles can be prepared at initial pH 9, molar ratio nFe(II)/nFe(III)＝0.02 and nGa(III)/nFe(III)＝0.18 under the condition of boiling and refluxing. Gallium incorporated into α-FeOOH particles takes an action to modulate the morphology of α-FeOOH. These α-Fe(Ga)OOH particles have been confirmed to be single crystal particles by ED pattern.

Key words: Ga-doping, α-Fe(Ga)OOH, single crystal particle, catalytic phase transformation