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Preparation method of strontium titanate nanometer piece

A nanosheet, strontium titanate technology, applied in nanotechnology, chemical instruments and methods, titanium compounds, etc., can solve the problem of no report on the preparation of strontium titanate nanosheets, and achieve easy control of process conditions, simple equipment, and specific surface area. big effect

Inactive Publication Date: 2012-07-18
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Zhejiang University used titanium sulfate and strontium nitrate as raw materials to prepare two-dimensional strontium titanate dendrites by hydrothermal method, but there is no report on the preparation of strontium titanate nanosheets

Method used

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  • Preparation method of strontium titanate nanometer piece
  • Preparation method of strontium titanate nanometer piece
  • Preparation method of strontium titanate nanometer piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Weigh 1.702g of tetrabutyl titanate, add it into 20ml of ethylene glycol methyl ether, stir magnetically until fully dissolved;

[0023] 2) Under stirring, add 2ml of pure ammonia solution to the ethylene glycol methyl ether solution of tetrabutyl titanate prepared in step 1), let stand, settle, filter, wash, and obtain titanium oxyhydroxide precipitation;

[0024] 3) Weigh 1.058g of strontium nitrate, add it to 10ml of ethylene glycol, heat and magnetically stir until completely dissolved;

[0025] 4) Add titanium oxyhydroxide precipitation, ethylene glycol solution of strontium nitrate, and 1.12 g of potassium hydroxide solid into a 50-ml reactor liner, and use ethylene glycol to adjust the volume of the mixed solution of the reaction materials to the volume of the reactor. 80% of the gallbladder volume, stirred for 12 hours to obtain the precursor slurry;

[0026] 5) Put the reactor liner with the precursor slurry in the reactor, seal it, heat it at 200°C for 24 ...

Embodiment 2

[0028] 1) Weigh 1.702g of tetrabutyl titanate, add it into 20ml of ethylene glycol methyl ether, stir magnetically until fully dissolved;

[0029] 2) Under stirring, add 2ml of pure ammonia solution to the ethylene glycol methyl ether solution of tetrabutyl titanate prepared in step 1), let stand, settle, filter, wash, and obtain titanium oxyhydroxide precipitation;

[0030] 3) Weigh 2.116g of strontium nitrate, add it to 20ml of ethylene glycol, heat and magnetically stir until completely dissolved;

[0031] 4) Add titanium oxyhydroxide precipitation, ethylene glycol solution of strontium nitrate, and 2.24 g of potassium hydroxide solid into a 50-ml reactor liner, and use ethylene glycol to adjust the volume of the mixed solution of the reaction materials to be 80% of the gallbladder volume, stirred for 6 hours to obtain the precursor slurry;

[0032] 5) Put the liner of the reactor containing the precursor slurry in the reactor, seal it, and heat it at 200°C for 12 hours fo...

Embodiment 3

[0034] 1) Weigh 0.6806g of tetrabutyl titanate, add it into 20ml of ethylene glycol methyl ether, and magnetically stir until fully dissolved;

[0035] 2) Under stirring, add 1 ml of pure ammonia solution to the ethylene glycol methyl ether solution of tetrabutyl titanate prepared in step 1), let stand, settle, filter, wash, and obtain titanium oxyhydroxide precipitation;

[0036] 3) Weigh 0.4233g of strontium nitrate, add it into 10ml of ethylene glycol, heat and magnetically stir until completely dissolved;

[0037] 4) Add titanium oxyhydroxide precipitation, ethylene glycol solution of strontium nitrate, and 1.12 g of potassium hydroxide solid into a 50-ml reactor liner, and use ethylene glycol to adjust the volume of the mixed solution of the reaction materials to the volume of the reactor. 80% of the gallbladder volume, stirred for 10 hours to obtain the precursor slurry;

[0038] 5) Put the reactor liner with the precursor slurry in the reactor, seal it, heat it at 200°...

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Abstract

The invention relates to a preparation method of a strontium titanate nanometer piece. According to the invention, butyl titanate is taken as a titanium source, strontium nitrate is taken as a strontium source, and ammonia water is taken as a precipitating agent. The preparation method comprises the following steps of: firstly, adopting ammonia water to deposit titanium salt so as to obtain titanic hydroxyl hydrogen oxide deposition to be as a solvent hot reaction material with the strontium nitrate, using glycol as a reaction system solvent to form a solvent thermosynthesis perovskite structure strontium titanate self assembly nanometer piece at 150 DEG C-240 DEG C. The preparation method provided by the invention has the advantages of simple technical process, no pollution, low cost, and is easy to control and is easy to perform large-scale production; the crystallizing quantity of the prepared product is stable, and the specific area is large; and the preparation method has wide application prospect on the fields such as electro-optical devices, memory devices, oxygen sensors, photocatalysts, solar batteries and the like.

Description

technical field [0001] The invention relates to a method for preparing strontium titanate nanosheets, belonging to the field of inorganic functional materials. Background technique [0002] Nanomaterials have quantum size effects and have better physical and chemical properties than bulk materials. Their preparation methods have become a focus of attention and research in materials science in recent years. The microscopic shape and size of the material determine the performance of the material. A growing number of studies have focused on the control of the microscopic morphology of materials. [0003] Strontium titanate is a typical and important ABO 3 type perovskite oxide, due to its photoelectric properties, chemical stability and non-toxicity, is a semiconductor with a bandgap width of 3.2eV, which is widely used in grain boundary layer capacitors (GBLC) and other electronic devices, oxygen sensors, optical Photoelectrode materials for catalysis and dye-sensitized cel...

Claims

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Application Information

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IPC IPC(8): C01G23/00B82Y40/00
Inventor 徐刚张严芳韩高荣任召辉魏晓赵高凌杜丕一翁文剑沈鸽
Owner ZHEJIANG UNIV
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