Process of preparing porous nickel oxide using plant structure

A technology of porous oxide and nickel oxide, applied in the direction of nickel oxide/nickel hydroxide, application, ceramic products, etc., can solve the problem of low porosity of nickel oxide powder, achieve good application prospects, concentrated pore size distribution, low cost cheap effect

Inactive Publication Date: 2006-06-14
SHANGHAI JIAOTONG UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

This technology can obtain nickel oxide powder with uniform particle size at the nanometer level, but the porosity of the nickel oxide powder obtained by this technology is very low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Select the dry wood material - Chinese fir powder as the raw material, and immerse it in the ammonia solution of nickel acetate for 1 hour, then dry it, and then carry out high temperature treatment in an oxidizing atmosphere at a heating rate of 1 °C / min, and keep it at 400 °C for 10 hours. The obtained porous nickel oxide (NiO) molecular sieve material has good electromagnetic wave absorption effect in the range of 100MHZ-1.5GHZ.

Embodiment 2

[0019] Select the dry wood material - paulownia powder as the raw material, immerse it in the ammonia solution of nickel acetate for 12 hours, then dry it, and then carry out high temperature treatment in an oxidizing atmosphere at a heating rate of 10°C / min, and keep it at 800°C for 5 hours. A porous nickel oxide (NiO) material is obtained, which has a good absorption effect in the visible light range.

Embodiment 3

[0021] Select the dry wood material-white pine powder as the raw material, immerse it in the mixed solution of nickel oxalate, ammonia water and ethanol for 24 hours, then dry it, and then carry out high-temperature treatment at a heating rate of 20°C / min in an oxidizing atmosphere, and keep it at 1200°C The porous nickel oxide (Ni 2 o 3 ) Molecular sieve material, which has good UV shielding effect in the ultraviolet frequency range.

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PUM

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Abstract

The invention discloses a template preparation method for preparing a porous nickel oxide material by using a plant structure, which is used in the field of inorganic ceramic materials. The method is as follows: 1). Select the type of plant material powder, and immerse the plant material powder in the ammonia solution of nickel salt for 1-24 hours for pretreatment, then take it out and dry it; 2). The plant material powder is subjected to high-temperature treatment in the range of 400-1200°C at a heating rate of 1-20°C / min in an oxidizing atmosphere, and the porous oxide Ni can be obtained after a holding time of 1-10 hours. x o y material, wherein: x is one of 1 and 2, and y is one of 1 and 3; the porous nickel oxide material prepared by the present invention has the characteristics of low cost, wide sources and low density on the one hand, and has a pore size distribution on the other hand Concentrated, adjustable aperture features.

Description

technical field [0001] The invention relates to a method for preparing a porous material, in particular to a method for preparing a porous nickel oxide material using a plant structure, which is used in the field of inorganic ceramic materials. Background technique [0002] Nickel oxide ceramics are mainly used in the manufacture of magnetic materials, electronic component materials, coatings, ceramic and glass pigments, and raw materials for nickel catalysts. Theoretical research results show that when nickel oxide becomes porous and has a certain pore size distribution, nickel oxide will show Wonderful optical, electrical and magnetic properties. [0003] After searching the prior art documents, it is found that the Chinese patent CN1112520A is entitled: "A Preparation Method of Ultrafine Particle Nickel Oxide". The technical feature of this patent is that after mixing the nickel salt with ammonium bicarbonate or ammonium carbonate, adding water, stirring the reaction unt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G53/04C04B35/28C04B38/00
Inventor 范同祥张荻刘兆婷
Owner SHANGHAI JIAOTONG UNIV
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