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High-purity green up-conversion monoclinic-phase bismuth titanate-based nanofiber and preparation method and application thereof

A nanofiber, phase bismuth titanate technology, applied in the chemical characteristics of fibers, textiles and papermaking, instruments, etc., can solve the problems of other impurity phases and high sintering temperature, and achieve high sensitivity, good repeatability and simple preparation method. easy effect

Active Publication Date: 2019-12-20
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sintering temperatures required by these methods are generally high and other impurity phases are prone to appear, such as Bi 2 Ti 2 o 7

Method used

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  • High-purity green up-conversion monoclinic-phase bismuth titanate-based nanofiber and preparation method and application thereof
  • High-purity green up-conversion monoclinic-phase bismuth titanate-based nanofiber and preparation method and application thereof
  • High-purity green up-conversion monoclinic-phase bismuth titanate-based nanofiber and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Mix DMF and acetic acid uniformly at a mass ratio of 1.7:1 to obtain A solution, then add tetrabutyl titanate, wherein the ratio of A solution to tetrabutyl titanate is 2.4:1, and then form a uniform and transparent solution by magnetic stirring Solution B; add ytterbium nitrate and holmium nitrate at a mass ratio of 1:1 under magnetic stirring conditions, and the ratio of B solution to the sum of its mass is 13:1; after it is fully dissolved, solution C can be obtained; then add bismuth nitrate, the solution The mass ratio of C to bismuth nitrate was 14:1, and it was fully stirred to dissolve, and finally PVP with a mass fraction of 4% was added, and the electrospinning precursor was obtained after it was completely dissolved by magnetic stirring.

[0048] Place the electrospinning precursor solution in an electrostatic field, control the voltage at 15kV, and flow at 5μl / m. A large amount of nanomaterials can be collected on the collecting plate. After the electrospinni...

Embodiment 2

[0051] Mix DMF and acetic acid uniformly at a mass ratio of 2.0:1, and form a transparent solution A by magnetic stirring; then add tetrabutyl titanate, wherein the ratio of solution A to tetrabutyl titanate is 2.8:1, and then pass Magnetic stirring forms a uniform and transparent solution B; add ytterbium nitrate and holmium nitrate at a mass ratio of 4:1 under magnetic stirring conditions, and the ratio of B solution to the sum of its mass is 15:1; after it is fully dissolved, solution C can be obtained; Then add bismuth nitrate, the mass ratio of solution C to bismuth nitrate is 15:1, and fully stir to dissolve it, and finally add 5% PVP by mass, and magnetically stir it to completely dissolve to obtain the electrospinning precursor liquid.

[0052] Under the conditions of a control voltage of 20kV and a flow rate of 7μl / m, a large amount of nanomaterials appeared on the collector. After the electrospinning was completed, the nanomaterials on the collector were transferred ...

Embodiment 3

[0055] Mix DMF and acetic acid uniformly at a mass ratio of 2.4:1, and form a transparent solution A by magnetic stirring; then add tetrabutyl titanate, wherein the ratio of solution A to tetrabutyl titanate is 3:1, and then pass Magnetic stirring forms a uniform and transparent solution B; add ytterbium nitrate and holmium nitrate at a mass ratio of 8:1 under magnetic stirring conditions, and the ratio of solution B to the sum of its mass is 17:1; after it is fully dissolved, solution C can be obtained; Then add bismuth nitrate, the mass ratio of solution C to bismuth nitrate is 17:1, and fully stir to dissolve it, and finally add PVP with a mass percentage of 6%, and completely dissolve it by magnetic stirring to obtain the electrospinning precursor liquid. Under the conditions of a control voltage of 22kV and a flow rate of 10μl / m, a large amount of nanomaterials appeared on the collector. After the electrospinning was completed, the nanomaterials on the collector were tran...

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Abstract

The invention discloses a high-purity green up-conversion monoclinic-phase bismuth titanate-based nanofiber and a preparation method and application thereof. In a solvent of dimethylformamide and acetic acid, the addition ratio of tetrabutyl titanate, ytterbium nitrate, holmium nitrate and bismuth nitrate is adjusted, and an electrospinning precursor liquid is obtained. The precursor liquid is placed in an electrostatic field, the liquid dropping droplets form a Taylor cone under the electrostatic field, an one-dimensional nanomaterial is prepared by electrostatic spinning under liquid surfacetension and electric field acting force, then through a process of heating, temperature maintaining and cooling, organic matter is removed, and a pure monoclinic-phase Bi2Ti4O11-based one-dimensionalnanostructure is obtained. Under the irradiation of near-infrared laser light, the obtained nanomaterial has bright high-purity green up-conversion luminescence and high light-temperature sensitivity. In addition, the preparation method is simple and easy to implement, has good reproducibility, provides convenience for obtaining a pure phase, has a low production cost, and can meet the requirements of batch production. The prepared material is expected to be further applied in the field of non-contact temperature measurement.

Description

technical field [0001] The invention belongs to ytterbium holmium rare earth doped ternary Bi 2 Ti 4 o 11 The technical field of compound one-dimensional nanomaterial preparation, specifically relates to a kind of high-purity green up-conversion Bi 2 Ti 4 o 11 Base nanofiber and its preparation method and use. Background technique [0002] Temperature is an important parameter in various fields, so how to accurately measure the temperature of an object becomes particularly important. The traditional contact temperature measurement method has disadvantages such as long response time and environmental interference, so it is difficult to detect the actual temperature of the object quickly and accurately. Based on this, it is necessary to develop a non-contact thermometer with high sensitivity. Compared with traditional temperature measurement technology, non-contact temperature measurement technology has higher sensitivity, faster and wider application range, such as it ...

Claims

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Application Information

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IPC IPC(8): D01F9/10D01F9/08G01K11/32
CPCD01F9/10D01F9/08G01K11/32
Inventor 葛万银徐美美施金豆高文兴张盼峰陆晨辉张塨凡张伟
Owner SHAANXI UNIV OF SCI & TECH
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