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Lead titanate nanotube with one-dimensional crystal structure and preparation method thereof

A crystal structure, lead titanate technology, applied in nanostructure manufacturing, nanotechnology, nanotechnology and other directions, to achieve the effects of good crystal stability, simple equipment, and easy control of process conditions

Inactive Publication Date: 2010-09-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Despite the high pressure conditions, PbTiO 3 It has a different structure and may have a huge electromechanical coupling effect in the phase transition region, but neither of these new ferroelectric phases or the huge electromechanical coupling effect can be realized at normal temperature and pressure, and it is impossible to be applied in practical electronic devices

Method used

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  • Lead titanate nanotube with one-dimensional crystal structure and preparation method thereof
  • Lead titanate nanotube with one-dimensional crystal structure and preparation method thereof
  • Lead titanate nanotube with one-dimensional crystal structure and preparation method thereof

Examples

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Effect test

Embodiment 1

[0025] 1) Dissolve tetrabutyl titanate in ethylene glycol methyl ether to adjust the Ti in the solution 4+ The ion concentration is 0.25mol / L;

[0026] 2) Under stirring, add 2 ml of 30% by mass ammonia water to the ethanol solution of tetrabutyl titanate, precipitate, filter, and wash with deionized water 6 times to obtain titanium oxyhydroxide precipitate;

[0027] 3) Dissolve lead nitrate in deionized water to adjust Pb in the solution 2+ The ion concentration of is 0.5mol / L;

[0028] 4) Dissolve potassium hydroxide and polyvinyl alcohol in deionized water respectively to prepare a potassium hydroxide solution with a concentration of 1mol / L and a polyvinyl alcohol solution with a concentration of 2g / L;

[0029] 5) The titanium oxyhydroxide precipitate prepared above, the lead nitrate aqueous solution, the potassium hydroxide aqueous solution and the aqueous solution of polyvinyl alcohol are added to the inner tank of the reactor, and the reaction material in the inner tank of the re...

Embodiment 2

[0032] 1) Dissolve tetrabutyl titanate in ethylene glycol methyl ether to adjust the Ti in the solution 4+ The ion concentration is 1mol / L;

[0033] 2) Under stirring, add 2 ml of 30% by mass ammonia water to the ethanol solution of tetrabutyl titanate, precipitate, filter, and wash with deionized water 6 times to obtain titanium oxyhydroxide precipitate;

[0034] 3) Dissolve lead nitrate in deionized water to adjust Pb in the solution 2+ The ion concentration of is 3.0mol / L;

[0035] 4) Dissolve potassium hydroxide and polyvinyl alcohol in deionized water respectively to prepare a potassium hydroxide solution with a concentration of 3mol / L and a polyvinyl alcohol solution with a concentration of 1g / L;

[0036] 5) The titanium oxyhydroxide precipitate prepared above, the lead nitrate aqueous solution, the potassium hydroxide aqueous solution and the aqueous solution of polyvinyl alcohol are added to the inner tank of the reactor, and the reaction material in the inner tank of the react...

Embodiment 3

[0039] 1) Dissolve tetrabutyl titanate in ethylene glycol methyl ether to adjust the Ti in the solution 4+ The ion concentration is 0.5mol / L;

[0040] 2) Under stirring, add 2 ml of 30% by mass ammonia water to the ethanol solution of tetrabutyl titanate, precipitate, filter, and wash with deionized water 6 times to obtain titanium oxyhydroxide precipitate;

[0041] 3) Dissolve lead nitrate in deionized water to adjust Pb in the solution 2+ The ion concentration of 0.25mol / L;

[0042] 4) Dissolve potassium hydroxide and polyvinyl alcohol in deionized water respectively to prepare a potassium hydroxide solution with a concentration of 2mol / L and a polyvinyl alcohol solution with a concentration of 4g / L;

[0043] 5) The titanium oxyhydroxide precipitate prepared above, the lead nitrate aqueous solution, the potassium hydroxide aqueous solution and the aqueous solution of polyvinyl alcohol are added to the inner tank of the reactor, and the reaction material in the inner tank of the react...

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Abstract

The invention discloses a lead titanate nanotube with a one-dimensional crystal structure, which has the characteristics as follows: (a) a space group is I4 / m; (b) cell parameters show that each PbTiO3 unit cell is composed of forty atoms, wherein, Pb:Ti:O=1:1:3; and (c) x, y, and z space positions of a lead atom, a titanium atom and an oxygen atom in each unit cell are respectively as follows: Pb (0.165, 0.151 and 0.5), Ti (0.471, 0.142 and 0.5), O1 (0.605, 0.028 and 0.5), O2 (0.169, 0.289 and 0.0) and O3 (0.543, 0.260 and 0.5). The lead titanate nanotube prepared by a hydrothermal method has the one-dimensional crystal structure, high purity, good crystallization stability and good dispersibility, and has wide application prospect in the fields such as microelectronic devices, drivers, sensors and the like. The preparation method of the invention has simple equipment, easy control of process conditions, low cost and easy industrialized production.

Description

Technical field [0001] The invention relates to a lead titanate nanotube and a preparation method thereof, in particular to a lead titanate nanotube with a one-dimensional crystal structure and a preparation method thereof. Background technique [0002] Lead titanate (PbTiO 3 ) Is a typical perovskite structure ferroelectric oxide, which was first researched and developed by Shirane et al. in 1950. Due to its simple structure, strong piezoelectricity and ferroelectricity, PbTiO 3 It has always been a prototype material in the field of ferroelectricity and piezoelectricity. It is of great significance for people to understand the electronic origin of perovskite oxide piezoelectricity and ferroelectricity. Also based on PbTiO 3 Piezoelectric ceramic materials, such as Pb(Zr, Ti)O 3 (PZT), Pb(Mg 1 / 3 Nb 2 / 3 )O 3 -PbTiO 3 (PMN-PT) and Pb(Zn 1 / 3 Nb 2 / 3 )O 3 -PbTiO 3 (PZN-PT), is widely used in many fields including medical imaging, ultrasonic sensors, drivers and ferroelectric non-volat...

Claims

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Application Information

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IPC IPC(8): C01G23/00B82B3/00
Inventor 韩高荣任召辉徐刚魏晓刘涌翁文剑杜丕一赵高凌张溪文沈鸽
Owner ZHEJIANG UNIV
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