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Process of preparing porous nickel oxide with plant structure

A technology of porous oxide and nickel oxide, applied in nickel oxide/nickel hydroxide, applications, ceramic products, etc., can solve the problem of low porosity of nickel oxide powder, achieve good application prospects, low cost, and simple process Effect

Inactive Publication Date: 2005-04-27
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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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 - 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] The dry wooden material - paulownia powder was selected as the raw material, soaked in the ammonia solution of nickel acetate for 12 hours, then dried, and then further treated at a high temperature in an oxidizing atmosphere at a heating rate of 10°C / min, and kept 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, and 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 in an oxidizing atmosphere at a heating rate of 20°C / min, and keep it at 1200°C The obtained porous nickel oxide (Ni2O3) molecular sieve material after 1 hour has a good ultraviolet shielding effect in the ultraviolet frequency range.

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Abstract

The template process of preparing porous nickel oxide material with plant structure is used in inorganic ceramic material field. The preparation process includes soaking the selected plant material powder in ammonia water solution of nickel salt for 1-24 hr and drying; and high temperature treatment of the plant material powder at 400-1200 deg.c via raising temperature in the speed of 1-20 deg.c/min inside oxidizing atmosphere and maintaining for 1-10 hr to obtain the porous oxide material NixOy, where x is 1 or 2 and y is 1 or 3. The preparation porous nickel oxide material has low cost, wide material source, low density and centralized and adjustable pore size distribution.

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 Applications(China)
IPC IPC(8): C01G53/04C04B35/28C04B38/00
Inventor 范同祥张荻刘兆婷
Owner SHANGHAI JIAO TONG UNIV
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