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Method for preparing CaTiO3:Eu<3+>/TiO2 composite fibers

A composite fiber, evenly mixed technology, applied in the direction of fiber chemical characteristics, rayon manufacturing, conjugated rayon, etc., to avoid fluorescence quenching

Inactive Publication Date: 2015-07-01
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the invention is in order to solve existing CaTiO 3 :Eu 3+ fluorescence quenching problem on nanocrystalline surfaces, while providing CaTiO 3 :Eu 3+ / TiO 2 Preparation method of composite fiber

Method used

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  • Method for preparing CaTiO3:Eu&lt;3+&gt;/TiO2 composite fibers
  • Method for preparing CaTiO3:Eu&lt;3+&gt;/TiO2 composite fibers
  • Method for preparing CaTiO3:Eu&lt;3+&gt;/TiO2 composite fibers

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specific Embodiment approach 1

[0013] Specific implementation mode one: this implementation mode CaTiO 3 :Eu 3+ / TiO 2 The preparation method of composite fiber is implemented in the following steps:

[0014] 1. The CaTiO 3 :Eu 3+ Mix nanocrystals, PVP (polyvinylpyrrolidone), tetrabutyl titanate and absolute ethanol evenly to obtain spinning solution;

[0015] 2. Place the spinning solution obtained in step 1 in an electrospinning device for electrospinning to obtain CaTiO 3 :Eu 3+ / TiO 2 composite fiber precursor material;

[0016] Three, the CaTiO obtained in step two 3 :Eu 3+ / TiO 2 The composite fiber precursor material is placed in a muffle furnace and fired at a temperature of 400-500°C to obtain CaTiO 3 :Eu 3+ / TiO 2 Composite fibers.

[0017] In this embodiment CaTiO 3 :Eu 3+ / TiO 2 The preparation process of the composite fiber is simple, the cost is low, the required equipment is simple, and it is easy to realize industrial production.

specific Embodiment approach 2

[0018] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the CaTiO described in step one 3 :Eu 3+ The preparation method of nanocrystals is as follows: calcium acetate, europium nitrate and tetrabutyl titanate are added to the ethylene glycol solution, the solid phase is collected after the reaction is completed, the solid phase is dried, and then calcined at a temperature of 600 ° C. get CaTiO 3 :Eu 3+ Nanocrystalline. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0019] Specific embodiment three: the difference between this embodiment and specific embodiment two is that the CaTiO described in step one 3 :Eu 3+ The preparation method of nanocrystals is as follows: add 0.009mol calcium acetate, 0.001mol europium nitrate and 3.4mL tetrabutyl titanate to 60mL ethylene glycol solution, collect the solid phase after the reaction, and dry the solid phase at 130°C , and then calcined at a temperature of 600 °C to obtain CaTiO 3 :Eu 3+ Nanocrystalline. Other steps and parameters are the same as in the second embodiment.

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Abstract

The invention discloses a method for preparing CaTiO3:Eu<3+> / TiO2 composite fibers and relates to a method for synthesizing the CaTiO3:Eu<3+> / TiO2 composite fibers, which is used for solving the problem of the conventional CaTiO3:Eu<3+> nanocrystalline surface fluorescence quenching. The method for preparing the composite fibers comprises the following steps: 1. uniformly mixing CaTiO3:Eu<3+> nanocrystalline, PVP, tetrabutyl titanate and absolute ethyl alcohol, thereby obtaining a spinning solution; 2. performing electrostatic spinning on the spinning solution in an electrostatic spinning solution, thereby obtaining a precursor material; and 3. roasting the precursor material, thereby obtaining the CaTiO3:Eu<3+> / TiO2 composite fibers. The CaTiO3:Eu<3+> / TiO2 composite fibers prepared by the invention are of a one-dimensional structure, the CaTiO3:Eu<3+> surface is coated by virtue of TiO2, and the CaTiO3:Eu<3+> nanocrystalline surface fluorescence quenching is avoided.

Description

technical field [0001] The present invention relates to a kind of CaTiO 3 :Eu 3+ / TiO 2 Synthesis method of composite fiber. Background technique [0002] Composite materials play a very important role in the development of modern science and technology. The research depth and application breadth of composite materials and the speed and scale of production development have become one of the important symbols to measure the advanced level of a country's science and technology. Composites are a mixture. It has played a great role in many fields and replaced many traditional materials. Composite materials are divided into metal and metal composite materials, non-metal and metal composite materials, and non-metal and non-metal composite materials according to their composition. Composite materials are widely used in aerospace, national defense, transportation, sports and other fields due to their excellent comprehensive properties, especially the designability of their pro...

Claims

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Application Information

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IPC IPC(8): D01F8/18D01F1/10
Inventor 王国凤孟玲魏廷库潘清江潘凯
Owner HEILONGJIANG UNIV
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