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Simple preparation method of alpha-FeOOH and alpha-Fe2O3 nano stick

A technology of nanorods and divalent iron, which is applied in the direction of iron oxide/hydroxide, iron oxide, etc., can solve the problems of increasing equipment investment and energy consumption, technology is difficult to meet demand, increasing costs and steps, etc., and achieves easy industrialization application, high morphology yield, effect of avoiding the calcination process

Inactive Publication Date: 2007-10-31
NANJING UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, regarding α-FeOOH and α-Fe 2 o 3 The preparation of nanorods, from the perspective of industrial application, the current technology is difficult to meet the demand
Most of the current publications are to guide the growth of one-dimensional structures under the action of surfactants such as CTAB [(a) Pu, Z.F.; Cao, M.H.; Yang, J.; Huang, K.L.; Hu, C.W. Nanotechnology 2006, 17, 799; (b) Liu, L.; Kou, H.-Z.; Mo, W.L.; Liu, H.J.; Wang, Y.Q.J. Phys.Chem.B 2006, 110, 15218; Gao, L.L.; Zheng, H.G.; Ji, M.R.; Tang, C.M.; Shen, T.; Zhang, Z.D.J. to environmental pollution
In addition, for α-Fe 2 o 3 Preparation of nanorods, many methods are achieved by calcining α-FeOOH nanorods [(a) Tang, B.; Wang, G.L.; Zhuo, L.H.; Ge, J.C.; Cui, L.J.Inorg.Chem.2006, 45, 5196 ; (b) Wu, C.Z.; Yin, P.; Zhu, X.; OuYang, C.Z.; L.L.; Zheng, H.G.; Ji, M.R.; Tang, C.M.; Shen, T.; Zhang, Z.D.J. E.; Hagfel, A. Chem. Mater. 2001, 13, 233; (e) Wu, J.-J.; Lee, Y.-L.; .Chem.B 2006, 110, 18108.], the process is relatively cumbersome, and also increases equipment investment and energy consumption

Method used

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  • Simple preparation method of alpha-FeOOH and alpha-Fe2O3 nano stick
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  • Simple preparation method of alpha-FeOOH and alpha-Fe2O3 nano stick

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Embodiment 1

[0027] Weigh FeSO 4 ·7H 2 O 0.70g dissolved in 21ml water, add 30% H 2 o 26ml, stirred for 20 minutes, transferred to a 48ml closed reactor and heated at 150°C for 2 hours. After cooling, the resulting precipitate was washed with distilled water and dried to obtain α-FeOOH nanorods. The electron microscope photo is shown in Figure 1.

Embodiment 2

[0029] Weigh FeSO 4 ·7H 2 O 0.70g dissolved in 21ml water, add 30% H 2 o 2 6ml, stirred for 20 minutes, transferred to a 48ml airtight reactor and heated at 200°C for 8 hours, after cooling, the resulting precipitate was washed with distilled water and dried to obtain α-Fe 2 o 3 The nanorods, electron micrographs are shown in Figure 2.

Embodiment 3

[0031] Weigh FeSO 4 ·7H 2 O 0.70g dissolved in 21ml water, add 30% H 2 o 2 10ml, stirred for 20 minutes, transferred to a 48ml airtight reactor and heated at 100°C for 0.5 hours. After cooling, the resulting precipitate was washed and dried with distilled water to obtain α-FeOOH nanorods. The electron microscope photo is shown in Figure 3.

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Abstract

The invention discloses a green and simple preparing method of alpha-FeOOH (goethite) and alpha-Fe2O3 (hematite) nanometer rod, which comprises the following steps: choosing bivalent soluble ferric saly and hydro peroxide as raw material; choosing simple hydrothermal reaction; selective-synthesizing alpha-FeOOH and alpha-Fe2O3 nanometer rod through controlling temperature; getting alpha-FeOOH nanometer rod under lower temperature; getting alpha-Fe2O3 nanometer rod under higher nanometer rod. This invention possesses simple operation, cheap raw material and wide prospect.

Description

technical field [0001] The invention belongs to the field of inorganic material preparation technology and nanometer material preparation, and relates to a kind of α-FeOOH (goethite) and α-Fe 2 o 3 Green and facile preparation of (hematite) nanorods. Background technique [0002] α-FeOOH and α-Fe 2 o 3 As an inorganic functional material, it has many important application values ​​[(a) Liang, X.; Wang, X.; Zhuang, J.; Chen, Y.T.; Wang, D.S.; Li, Y.D. Adv. Funct. Mater.2006, 16 , 1805; (b) Zhong, L.-S.; Hu, J.-S.; Liang, H.-P.; Cao, A.-M.; Song, W.-G.; Wan, L. - J. Adv. Mater. 2006, 18, 2426.). Goethite can be used as pigment and catalyst [(a) Colon, D.; Weber, E.J.; Anderson, J.L.Environ.Sci.Technol.2006, 40, 4976; (b) Wu, J.J.; Muruganandham, M.; Yang , J.S.; Lin, S.S.Catal.Commun.2006, 7, 901.], but also an important raw material for the preparation of hematite and maghemite. Hematite is the most stable iron oxide, which can be used as catalyst, gas sensing material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/02C01G49/06
Inventor 张爱民董玉明杨红晓殷英
Owner NANJING UNIV
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