Method for preparing calcium titanate nanoparticles

A technology of nanoparticles and calcium titanate, which is applied in the field of preparation of calcium titanate nanoparticles, can solve the problem of particle size reduction without calcium titanate materials, and achieve the effect of low cost and easy production

Inactive Publication Date: 2011-08-03
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But there is no easy way to make the particles of calcium titanate smaller

Method used

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  • Method for preparing calcium titanate nanoparticles

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Effect test

example 1

[0021] 1) Dissolve tetrabutyl titanate in ethylene glycol methyl ether to adjust the Ti in the solution 4+ The ion concentration is 0.5mol / L;

[0022] 2) Under stirring, add 1.5ml of ammonia solution with a mass concentration of 30% to the tetrabutyl titanate ethylene glycol methyl ether solution prepared in 1), precipitate, filter, and wash with deionized water for 6 times to obtain titanium Co-precipitation of oxyhydroxides;

[0023] 3) Dissolve calcium nitrate in deionized water to adjust the Ca in the solution 2+ The ion concentration is 1.5mol / L;

[0024] 4) Potassium hydroxide is dissolved in deionized water, and the configuration concentration is an aqueous potassium hydroxide solution of 2mol / L;

[0025] 5) Put 6g glucose at 180 o C hydrothermal reaction 10h, obtains glucose hydrothermal decomposition solution;

[0026] 6) Add titanium oxyhydroxide co-precipitation, calcium nitrate aqueous solution, glucose hydrothermal decomposition solution 20ml and potassium hy...

example 2

[0029] 1) Dissolve tetrabutyl titanate in ethylene glycol methyl ether to adjust the Ti in the solution 4+ The ion concentration is 1mol / L;

[0030] 2) Under stirring, add 1.5ml of ammonia solution with a mass concentration of 30% to the tetrabutyl titanate ethylene glycol methyl ether solution prepared in 1), precipitate, filter, and wash with deionized water for 6 times to obtain titanium Co-precipitation of oxyhydroxides;

[0031] 3) Dissolve calcium nitrate in deionized water to adjust the Ca in the solution 2+ The ion concentration is 2mol / L;

[0032] 4) Potassium hydroxide is dissolved in deionized water, and the configuration concentration is an aqueous potassium hydroxide solution of 2 mol / L;

[0033] 5) Put 6g glucose at 180 o C hydrothermal reaction 10h, obtains glucose hydrothermal decomposition solution;

[0034] 6) Add titanium oxyhydroxide co-precipitation, calcium nitrate aqueous solution, glucose hydrothermal decomposition solution 20ml and potassium hydro...

example 3

[0037] 1) Dissolve tetrabutyl titanate in ethylene glycol methyl ether to adjust the Ti in the solution 4+ The ion concentration is 0.6mol / L;

[0038] 2) Under stirring, add 1.0ml of ammonia solution with a mass concentration of 30% to the tetrabutyl titanate ethylene glycol methyl ether solution prepared in 1), precipitate, filter, and wash with deionized water for 6 times to obtain titanium Co-precipitation of oxyhydroxides;

[0039] 3) Dissolve calcium nitrate in deionized water to adjust the Ca in the solution 2+ The ion concentration is 2.4mol / L;

[0040] 4) Potassium hydroxide is dissolved in deionized water, and the configuration concentration is an aqueous potassium hydroxide solution of 2 mol / L solution;

[0041] 5) Put 5g glucose at 160 o C hydrothermal reaction 12h, obtains glucose hydrothermal decomposition solution;

[0042] 6) Add titanium oxyhydroxide co-precipitation, calcium nitrate aqueous solution, glucose hydrothermal decomposition solution 20ml and po...

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Abstract

The invention discloses a method for preparing calcium titanate nanoparticles. The method comprises the following steps of: adding a mineralizing agent, namely potassium hydroxide, with proper concentration, into hydrothermal reaction materials, namely titanium hydroxide coprecipitate and deionized water solution of calcium nitrate; introducing solution obtained by hydrothermally decomposing glucose into a hydrothermal system to influence nucleation and control the particle size of products; and synthesizing the calcium titanate nanoparticles of which the diameter is 30 to 60nm by hydrothermal reaction. The process is simple and is easy to control; the method is environment-friendly and low in cost; and the products are easy to produce.

Description

technical field [0001] The invention relates to a preparation method of calcium titanate nanoparticles, belonging to the field of inorganic non-metallic materials. Background technique [0002] Perovskite oxides have natural perovskite (CaTiO 3 ) structure, similar structures are square, rhomboid, tetragonal, monoclinic and triclinic. Perovskite-type composite oxides have unique semiconducting properties. In recent years, the use of this property as a photocatalyst for photodegradation has attracted much attention. Due to the stable crystal structure, unique electromagnetic properties and high redox, hydrogenolysis, isomerization, electrocatalysis and other activities of this kind of compound, as a new type of functional material, it has great potential in the fields of environmental protection and industrial catalysis. Great development potential. [0003] In standard perovskites, the A or B sites are replaced or partially replaced by other metal ions, and various compos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/00B82Y40/00
Inventor 韩高荣郑伟魏晓徐刚任召辉沈鸽翁文剑杜丕一赵高凌
Owner ZHEJIANG UNIV
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