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Method for preparing urchin-shaped hydroxyferric oxide and urchin-shaped ferric oxide nano material

A nanotechnology of iron oxyhydroxide and iron oxide, which is applied in the field of nanomaterials, can solve the problems of low specific surface area of ​​materials that cannot meet actual needs, unfavorable regulation of product microstructure, and low efficiency, and achieve excellent catalytic properties, high structural purity, and high efficiency. high effect

Inactive Publication Date: 2010-06-16
ZHEJIANG NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation methods published in these documents mainly utilize high-temperature hydrothermal conditions, or expensive surfactants, or special metal organic salts, so the efficiency is low or the cost is high
At the same time, the above synthesis method is not conducive to the regulation and control of the microstructure of the product, and the low specific surface area of ​​the obtained material cannot meet the actual needs.

Method used

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  • Method for preparing urchin-shaped hydroxyferric oxide and urchin-shaped ferric oxide nano material
  • Method for preparing urchin-shaped hydroxyferric oxide and urchin-shaped ferric oxide nano material
  • Method for preparing urchin-shaped hydroxyferric oxide and urchin-shaped ferric oxide nano material

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Experimental program
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Effect test

Embodiment 1

[0037] Add 17.80g of glucose, 16.68g of ferrous sulfate and 1000mL of deionized water into a three-necked flask, feed 1.0L / min air at a certain temperature (such as: 80°C), stir and reflux for a certain period of time for 10h, wash and filter , and dried in vacuum at 80°C for 12h to obtain yellow-green α-FeOOH. The morphology of the obtained product is as figure 1 and figure 2 Shown is the structure of a sea urchin.

Embodiment 2

[0039] The product obtained in embodiment 1 carries out phase analysis (as image 3 shown). The phase is only α-FeOOH, no other impurity exists. Its specific surface area is calculated to be 61.1m by nitrogen adsorption / desorption curve test 2 / g.

Embodiment 3

[0041] Using the process in Example 1, when the reaction time is 30 minutes, the sea urchin structure α-FeOOH can also be obtained. The morphology of the obtained product is as Figure 4 .

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Abstract

The invention relates to a method for preparing an urchin-shaped hydroxyferric oxide and urchin-shaped ferric oxide nano material, which adopts a glucose guiding hydrolysis process and an annealing process and specifically comprises that: a ferrous salt is used as a raw material, the hydrolysis reaction is guided by adopting a saccharide structure indicator, the weight ratio of the glucose to an iron source is 0.5 to 5, and the molar concentration of the saccharide structure indicator is 0.02 to 0.2M; and then, an oxidizing gas is introduced into the raw materials at the temperature of between 25 and 100 DEG C, a yellow green urchin-shaped hydroxyferric oxide product is obtained through stirring reflux reaction, washing and filtration, and the product is annealed to form the urchin-shaped ferric oxide nano material with adjustable specific surface area and topography. The method has the advantages of simple operation, low requirement for equipment, low cost and high efficiency, and is easy in industrial application and popularization; and the synthesized nano material has the advantages of high purity, little impurity content and large specific surface area, can obviously improve the performance of a catalyst and a battery, and has remarkable economic benefit and social benefit.

Description

technical field [0001] The invention relates to the field of nanometer materials, in particular to a simple method for producing sea urchin-like iron oxyhydroxide and sea urchin-like iron oxide nanomaterials by using a glucose-guided hydrolysis process and an annealing treatment process. Background technique [0002] In recent years, the construction of one-dimensional (1D), two-dimensional (2D) and three-dimensional (3D) ordered or hierarchical nanostructures using simple building blocks (such as nanoparticles, nanorods / tubes, nanosheets, etc.) Widely concerned, because these complex nanostructures not only maintain the basic characteristics of the original building blocks, but also bring some new physical and chemical properties, and are expected to have broad application prospects in the fields of catalysis, electrochemistry, and microwave absorption. (Hydroxy)iron oxide, an important semiconductor functional material, has good weather resistance, light resistance, non-to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/02C01G49/06B82B3/00B01J23/745H01M4/52
CPCY02E60/12Y02E60/10
Inventor 童国秀官建国吴文华
Owner ZHEJIANG NORMAL UNIVERSITY
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