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Preparation method of Bi2Fe4O9 nano-rod-shaped or nano-cake-shaped material

A bi2fe4o9 and nano-cake technology, applied in chemical instruments and methods, inorganic chemistry, iron compounds, etc., can solve problems such as lack of in-depth research, and achieve the effects of good reproducibility, easy mass production and simple process

Inactive Publication Date: 2017-12-12
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, scholars at home and abroad have not yet done in-depth research on the above two aspects.

Method used

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  • Preparation method of Bi2Fe4O9 nano-rod-shaped or nano-cake-shaped material
  • Preparation method of Bi2Fe4O9 nano-rod-shaped or nano-cake-shaped material
  • Preparation method of Bi2Fe4O9 nano-rod-shaped or nano-cake-shaped material

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] 3mmol of bismuth acetate pentahydrate, 6mmol of ferric nitrate nonahydrate and 42mmol of sodium hydroxide powder were added to 35ml of distilled water, placed in a 50ml beaker, and placed in an ultrasonic instrument for 3 minutes of sonication. Pour the above solution into a 50ml polytetrafluoroethylene-lined reaction kettle, seal it, place it in an oven, control the temperature of the oven at 160°C, react for 24 hours, cool to room temperature, wash it several times, and dry it in vacuum to obtain Bi 2 Fe 4 o 9 nanorod material;

[0026] figure 1 The positions and relative intensities of each diffraction peak in the 2 Fe 4 o 9 The JPCDS card (71-2494) is consistent, indicating that the product Bi 2 Fe 4 o 9 It is highly crystalline.

[0027] from figure 2 It can be seen that the prepared Bi 2 Fe 4 o 9 Nanomaterials are nanorods with regular shape and relatively uniform size, with a length of 1-2 μm and a width of 150 nm.

Embodiment 2

[0029] Add 3mmol of bismuth chloride, 6mmol of ferric chloride and 50mmol of sodium hydroxide powder into 35ml of distilled water, place it in a 50ml beaker, and put it into an ultrasonic instrument for 5 minutes of sonication. Pour the above solution into a 50ml polytetrafluoroethylene-lined reaction kettle, seal it, place it in an oven, control the temperature of the oven at 200°C, react for 24 hours, cool to room temperature, wash it several times, and dry it in vacuum to obtain Bi 2 Fe 4 o 9 Nanorod and nanocake materials;

[0030] from figure 1 It can be seen that the positions and relative intensities of each diffraction peak are related to Bi 2 Fe 4 o 9 The JPCDS card (71-2494) is consistent, indicating that the product Bi 2 Fe 4 o 9 It is highly crystalline.

[0031] from image 3 It can be seen that the prepared Bi 2 Fe 4 o 9 Nanomaterials are composed of nanorods and nanocakes with regular shape and relatively uniform size. Among them, the length of the...

Embodiment 3

[0033] Add 3mmol of bismuth acetate pentahydrate, 6mmol of ferric nitrate nonahydrate and 60mmol of sodium hydroxide powder into 35ml of distilled water, place it in a 50ml beaker, and put it into an ultrasonic instrument for 5 minutes of sonication. Pour the above solution into a 50ml polytetrafluoroethylene-lined reaction kettle, seal it, place it in an oven, control the temperature of the oven at 200°C, react for 24 hours, cool to room temperature, wash it several times, and dry it in vacuum to obtain Bi2 Fe 4 o 9 nano cake material;

[0034] figure 1 The positions and relative intensities of each diffraction peak in the 2 Fe 4 o 9 The JPCDS card (71-2494) is consistent, indicating that the product Bi 2 Fe 4 o 9 It is highly crystalline.

[0035] from Figure 4 It can be seen that the prepared Bi 2 Fe 4 o 9 Nanomaterials are composed of nanocakes with regular shape and relatively uniform size, and few nanorods appear, indicating that with the increase of alkali ...

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Abstract

The invention belongs to the technical field of nano-materials and in particular relates to a preparation method of a Bi2Fe4O9 nano-rod-shaped or nano-cake-shaped material. A Bi2Fe4O9 nano-material is obtained by adopting a hydrothermal synthesis method through high-temperature water heat. According to the preparation method provided by the invention, sodium hydroxide is used as an additional alkali source; meanwhile, the mol concentration of the alkali source is adjusted to regulate and control the size and shape of Bi2Fe4O9; finally, the Bi2Fe4O9 nano-rod-shaped or nano-cake-shaped material which has the regular shape and a stable structure is obtained. The method provided by the invention has the advantages of moderate and controllable experiment conditions, strong practicability and good repeatability.

Description

technical field [0001] The invention belongs to the technical field of nanocomposite materials, in particular to a novel Bi 2 Fe 4 o 9 Preparation of nanorod or nanocake-like materials. Background technique [0002] With the rapid development of economy and society, environmental degradation and energy depletion caused by fossil energy have attracted great attention from all countries. The key to alleviating energy and environmental problems is to find new materials to store existing energy or degrade pollution. Fortunately, the unique structure of bismuth-iron compound materials leads to some specific properties, which will be of great research value in the field of energy. bismuth iron ore Bi 25 FeO 40 The excellent optical properties caused by the defects in the multiferroic material BiFeO 3 , has important application prospects in the field of magnetic and ferroelectric devices, and the excellent gas-sensing material Bi 2 Fe 4 0 9 Due to its own structure, it a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/00
CPCC01G49/0018C01P2002/72C01P2004/03C01P2004/10C01P2004/20
Inventor 徐乐赵岩连加彪黄云鹏
Owner JIANGSU UNIV
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