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Rare earth doped Bi2Ti4O11 high-purity green nanofiber and preparation method and application thereof

A technology of rare earth doping and nanofibers, which is applied in the fields of fiber chemical characteristics, chemical instruments and methods, and rayon manufacturing, etc. It can solve problems such as high sintering temperature, achieve good repeatability, simple and easy preparation method, and excellent luminescence performance Effect

Inactive Publication Date: 2021-01-05
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Regarding the preparation method, the existing reports mainly use the traditional solid-state reaction method, which requires a high sintering temperature and is prone to Bi 2 Ti 2 o 7 Miscellaneous

Method used

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  • Rare earth doped Bi2Ti4O11 high-purity green nanofiber and preparation method and application thereof
  • Rare earth doped Bi2Ti4O11 high-purity green nanofiber and preparation method and application thereof
  • Rare earth doped Bi2Ti4O11 high-purity green nanofiber and preparation method and application thereof

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preparation example Construction

[0043] A kind of rare earth doped Bi of the present invention 2 Ti 4 o 11 A method for preparing high-purity green nanofibers, comprising the following steps:

[0044] S1. Mix glacial acetic acid (HAC) and N,N-dimethylformamide (DMF) with a mass ratio of (0.5-1):1 to obtain solution A;

[0045] S2. During continuous stirring, add tetrabutyl titanate into solution A, the mass ratio of tetrabutyl titanate to solution A is (0.27-0.5):1, and obtain solution B;

[0046] S3. Adding bismuth nitrate with a mass ratio of (0.05 to 0.3): 1 to solution B during continuous stirring to obtain solution C;

[0047] S4, adding rare earth ions in the process of stirring solution C, the mass ratio of the total amount of doped rare earth ions to solution C is (0.04~0.5): 1, rare earth ions include ytterbium nitrate and holmium nitrate, ytterbium nitrate and The mass ratio of holmium nitrate is (1-20):1 to obtain solution D;

[0048] S5. After being completely dissolved by magnetic stirring, ...

Embodiment 1

[0056] Mix HAC and DMF at a mass ratio of 1:1, and form a transparent solution A by magnetic stirring; then add tetrabutyl titanate with a mass ratio of 0.27:1 to solution A to obtain solution B; quickly stir and add solution B Bismuth nitrate with a mass ratio of 0.05:1 and fully stirred to dissolve it to obtain solution C; add rare earth ions with a mass ratio of the total amount to solution C of 0.04:1, wherein the mass ratio of ytterbium nitrate and holmium nitrate is 1:1; finally Adding PVP with a mass fraction of 8% was fully dissolved by magnetic stirring to obtain an electrospinning precursor solution.

[0057] Under the conditions of a control voltage of 10kV and a flow rate of 5μL / min, a large amount of nanomaterials appear on the collector, and the nanomaterials on the collector are transferred to a muffle furnace and kept at 800°C for 10 hours to obtain crystallization properties High one-dimensional Bi 2 Ti 4 o 11 : Yb 3+ , Ho 3+ nanomaterials.

[0058] fig...

Embodiment 2

[0060] Mix HAC and DMF at a mass ratio of 0.6:1, and form a transparent solution A by magnetic stirring; then add tetrabutyl titanate with a mass ratio of 0.3:1 to solution A to obtain solution B; add solution B under rapid stirring The mass ratio of B is 0.1:1 bismuth nitrate and fully stirred to dissolve it to obtain solution C; add the total amount of rare earth ions with a mass ratio of 0.1:1 to solution C. The mass ratio of ytterbium nitrate and holmium nitrate is 6:1 ; Finally, PVP with a mass fraction of 10% was added and fully dissolved by magnetic stirring to obtain an electrospinning precursor solution.

[0061] Under the conditions of control voltage of 15kV and flow rate of 10μL / min, a large amount of nanomaterials appear on the collector, and the nanomaterials on the collector are transferred to the muffle furnace and kept at 800°C for 6 hours to obtain crystallization properties High one-dimensional Bi 2 Ti 4 o 11 : Yb 3+ , Ho 3+ nanomaterials.

[0062] f...

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Abstract

The invention discloses a rare earth doped Bi2Ti4O11 high-purity green nanofiber and a preparation method and application thereof. Glacial acetic acid and N,N-dimethylformamide are used as solvents, tetrabutyl titanate, bismuth nitrate, ytterbium nitrate and holmium nitrate are used as experimental raw materials, a proper amount of polyvinylpyrrolidone is added to improve the viscosity and conductivity of a solution, and after an electrostatic spinning precursor solution is prepared, the electrostatic spinning precursor solution is moved into an electrostatic spinning device; high pressure isapplied, the precursor solution forms a Taylor cone at a needle tip under the combined action of electric field force and surface tension, and filaments are sprayed to a collecting plate; then materials on the collecting plate are moved into a muffle furnace, heat treatment is carried out, and pure one-dimensional Bi2Ti4O11:Yb3+, Ho3+ nano materials can be obtained; and finally, under excitation of a 980nm laser device, a sample shows the excellent green up-conversion luminescence property, the luminescence intensity is decreased along with increase of the temperature, and the excellent temperature sensing property is achieved.

Description

technical field [0001] The invention belongs to rare earth ternary Bi 2 Ti 4 o 11 :Yb 3+ ,Ho 3+ The technical field of compound one-dimensional nanomaterial preparation, specifically related to a kind of rare earth doped Bi 2 Ti 4 o 11 High-purity green nanofiber and its preparation method and application. Background technique [0002] Temperature is a key physical quantity in daily life, industrial production and scientific research. Although traditional thermometers can meet the requirements of daily temperature measurement, they cannot be used for temperature measurement under special environmental conditions, such as intracellular, strong magnetic field and corrosive environment. To alleviate this problem, non-contact optical thermometers have become a research hotspot due to their advantages of fast response, high detection accuracy, good corrosion resistance, and real-time response. Among them, the fluorescence intensity ratio technology based on the thermal c...

Claims

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Application Information

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IPC IPC(8): D01F9/08D01F1/10D01F1/09C09K11/74
CPCD01F9/08D01F1/10D01F1/09C09K11/7769
Inventor 葛万银徐美美陆晨辉张盼锋张伟张塨凡
Owner SHAANXI UNIV OF SCI & TECH
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