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Preparation method of NaYF4/TiO2/Bi2WO6:Ln3+ composite fiber through combination of electrostatic spinning and solvothermal

An electrospinning, composite fiber technology, applied in fiber processing, filament/thread forming, textile and papermaking, etc., to achieve the effect of high luminous efficiency, simple equipment, and increased stability

Inactive Publication Date: 2014-12-17
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, there is also the possibility of new functions due to compounding effects

Method used

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  • Preparation method of NaYF4/TiO2/Bi2WO6:Ln3+ composite fiber through combination of electrostatic spinning and solvothermal
  • Preparation method of NaYF4/TiO2/Bi2WO6:Ln3+ composite fiber through combination of electrostatic spinning and solvothermal
  • Preparation method of NaYF4/TiO2/Bi2WO6:Ln3+ composite fiber through combination of electrostatic spinning and solvothermal

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specific Embodiment approach 1

[0020] Specific embodiment one: In this embodiment, electrospinning-solvothermal combination is used to prepare NaYF 4 / TiO 2 / Bi 2 WO 6 :Ln 3+ The method for composite fibers is realized in the following steps:

[0021] 1. NaYF 4 :Ln 3+ Nanocrystals, PVP, tetrabutyl titanate and absolute ethanol were mixed at a temperature of 40 °C and a stirring speed of 150 r / min, and then obtained NaYF by electrospinning 4 / TiO 2 composite fiber precursor material;

[0022] 2. The NaYF obtained in step 1 4 / TiO 2 The composite fiber precursor material is calcined, the calcining temperature is 450-550°C, and the calcining time is 2h under the condition of heating rate of 1°C / min, to obtain NaYF 4 / TiO 2 composite fiber;

[0023] 3. In rare earth nitrate and Bi(NO 3 ) 3 Add surfactant, NaYF to the mixed solution 4 / TiO 2 Composite fiber and anion salt, stir evenly, heat treatment at 110-220°C for 2-48h, then wash with distilled water until the pH of the solution is 7, and the...

specific Embodiment approach 2

[0030] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the electrospinning described in Step 1 uses a voltage of 12kV. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0031] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the calcination temperature in Step 2 is 500°C. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a preparation method of NaYF4 / TiO2 / Bi2WO6:Ln3+ composite fiber through combination of electrostatic spinning and solvothermal, and relates to a preparation method of NaYF4 / TiO2 / Bi2WO6:Ln3+ composite fiber. The invention aims to obtain NaYF4 / TiO2 / Bi2WO6:Ln3+ composite fiber. The preparation method comprises following steps: step 1, preparing the NaYF4 / TiO2 composite fiber precursor material; step 2, burning the NaYF4 / TiO2 composite fiber precursor material to obtain the NaYF4 / TiO2 composite fiber; step 3, adding surfactant, NaYF4 / TiO2 composite fiber and anionic salt into a mixed solution of rare earth nitrate and Bi(NO3)3, stirring, subjecting the solution to a heating treatment, washing, drying so as to obtain the NaYF4 / TiO2 / Bi2WO6:Ln3+ composite fiber. The preparation method has the advantages of simple technology and equipment and low cost, and the industrial production for the preparation method is easy to achieve.

Description

technical field [0001] The present invention relates to the preparation of NaYF 4 / TiO 2 / Bi 2 WO 6 :Ln 3+ method of compounding fibers. 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. Composite material is a kind of mixture, which 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/08D01D5/00
Inventor 王国凤刘帅李莹潘清江潘凯
Owner HEILONGJIANG UNIV