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Preparation method of lead titanate/zinc oxide composite nanostructure on a flexible substrate

A composite nanostructure, flexible substrate technology, applied in chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve problems such as no related reports, and achieve the effects of simple process, high purity, and easy control.

Active Publication Date: 2016-09-28
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on composite materials of this material and other oxides, especially the preparation and performance exploration of composite materials on a flexible base is still in the exploratory stage, and there are no relevant reports at home and abroad.

Method used

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  • Preparation method of lead titanate/zinc oxide composite nanostructure on a flexible substrate
  • Preparation method of lead titanate/zinc oxide composite nanostructure on a flexible substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) Configure Pb 2+ 20ml of lead nitrate aqueous solution with an ion concentration of 0.25mol / L; dissolving butyl titanate in ethylene glycol methyl ether to make the Ti in the solution 4+ The ion concentration is 0.25mol / L, add ammonia water with a mass concentration of 30% to Ti 4+ Ions are completely precipitated, filtered, washed, and titanium hydroxide precipitates are obtained;

[0021] 2) Prepare 20ml of 1mol / L potassium hydroxide aqueous solution and 40ml of 2g / L polyvinyl alcohol aqueous solution respectively, and combine potassium hydroxide aqueous solution, polyvinyl alcohol aqueous solution, titanium oxyhydroxide precipitation and step 1) lead nitrate aqueous solution together Added to the inner tank of the reactor, Ti 4+ Pb in lead nitrate solution 2+ The molar ratio is 1:1, placed in the reactor, airtight, at 180 o Insulate in the furnace of C, after reacting for 12 hours, place in the air and naturally cool down to room temperature, take out the react...

Embodiment 2

[0028] 1) Configure Pb 2+ 20ml of lead nitrate aqueous solution with an ion concentration of 0.5mol / L; dissolving butyl titanate in ethylene glycol methyl ether to make the Ti in the solution 4+ Concentration is 0.5mol / L, add the ammoniacal liquor of mass concentration 30% to Ti 4+ The ions are completely precipitated, filtered and washed to obtain the precipitated titanium oxyhydroxide;

[0029] 2) Prepare 20ml of 0.5mol / L potassium hydroxide aqueous solution and 40ml of 2g / L polyvinyl alcohol aqueous solution respectively, and deposit potassium hydroxide aqueous solution, polyvinyl alcohol aqueous solution, titanium hydroxide solution and lead nitrate aqueous solution in step 1) Together into the reactor liner, Ti4+ Pb in lead nitrate solution 2+ The molar ratio is 1:1, placed in the reactor, airtight, at 200 o Keep warm in the furnace of C, after reacting for 12 hours, place it in the air to cool down to room temperature naturally, take out the reaction product, filter, ...

Embodiment 3

[0035] 1) Configure Pb 2+ 20ml of lead nitrate aqueous solution with an ion concentration of 1mol / L; dissolving butyl titanate in ethylene glycol methyl ether to make Ti in the solution 4+ The concentration is 1mol / L, add ammonia water with a mass concentration of 30% to Ti 4+ The ions are completely precipitated, filtered and washed to obtain the precipitated titanium oxyhydroxide;

[0036] 2) Prepare 20ml of 2mol / L potassium hydroxide aqueous solution and 40ml of 2g / L polyvinyl alcohol aqueous solution respectively, and combine potassium hydroxide aqueous solution, polyvinyl alcohol aqueous solution, titanium oxyhydroxide precipitation and step 1) lead nitrate aqueous solution together Added to the inner tank of the reactor, Ti 4+ Pb in lead nitrate solution 2+ The molar ratio is 1:1, placed in the reactor, airtight, at 200 o Insulate in the furnace of C, after reacting for 10 hours, place in the air and naturally cool down to room temperature, take out the reaction prod...

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Abstract

The preparation method of the lead titanate / zinc oxide composite nanostructure on the flexible substrate disclosed by the present invention comprises the steps of: preparing powdered one-dimensional columnar structure lead titanate single crystal nanofibers by hydrothermal method, adding absolute ethanol and ultrasonically oscillating into suspension The liquid is dropped onto the silicon wafer, dried and annealed to obtain tetragonal lead titanate single crystal nanofibers, which are scraped off from the silicon wafer, added with absolute ethanol, and dropped onto the flexible substrate to form titanic acid on the flexible substrate. lead single crystal nanofiber film; then zinc acetate is used as the zinc oxide seed solution, and the mixed solution of zinc nitrate aqueous solution, hexamethylenetetramine aqueous solution and sodium citrate aqueous solution is the zinc oxide growth solution. Zinc oxide is grown on the flexible substrate of the fiber membrane to obtain a lead titanate / zinc oxide composite nanostructure on the flexible substrate. The process of the invention is simple, easy to control, pollution-free and low in cost. The lead titanate / zinc oxide composite nanostructures prepared on the flexible substrate have high purity and good dispersion.

Description

technical field [0001] The invention relates to a preparation method of a lead titanate / zinc oxide composite nanostructure, in particular to a preparation method of a lead titanate / zinc oxide composite nanostructure on a flexible substrate. Background technique [0002] Lead titanate is a typical perovskite-type ferroelectric oxide. Due to its simple structure, strong piezoelectricity and ferroelectricity, lead titanate has been the prototype of research in the field of ferroelectricity and piezoelectricity since its discovery in the 1950s. It is of great significance for people to understand the electronic origin of piezoelectricity and ferroelectricity of perovskite oxides. In addition, it also has great application potential as a pyroelectric material and is a promising ferroelectric, piezoelectric, and pyroelectric material. Zhejiang University used polymer-assisted hydrothermal method for the first time to prepare lead titanate single crystal nanofibers with one-dimens...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/32C30B29/66C30B29/16C30B7/14B82Y40/00B82Y30/00
Inventor 韩高荣姜姗郑雪飞王玮琦任召辉徐刚肖珍刘振亚翁文剑杜丕一沈鸽赵高凌
Owner ZHEJIANG UNIV
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