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Electrostatic spinning based pure-phase erbium titanate nanomaterial preparation method and application

An electrospinning method and nano-material technology, which is applied in the field of preparation of pure phase erbium titanate Er2Ti2O7 nano-materials by electrospinning method, to simplify the double-doping or multi-doping process, the preparation method is simple and easy, and the doping process is avoided Effect

Active Publication Date: 2018-11-02
深圳万知达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One-dimensional erbium titanate Er 2 Ti 2 o 7 The preparation method of nanomaterials has not been reported yet

Method used

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  • Electrostatic spinning based pure-phase erbium titanate nanomaterial preparation method and application
  • Electrostatic spinning based pure-phase erbium titanate nanomaterial preparation method and application
  • Electrostatic spinning based pure-phase erbium titanate nanomaterial preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Mix acetic acid and DMF at a volume ratio of 0.2:1, and form a transparent solution by magnetic stirring; then add erbium nitrate and dissolve it fully by stirring, the quality of acetic acid and DMF is 5 times that of erbium nitrate; add it under rapid stirring For tetrabutyl titanate, the mass of acetic acid and DMF is 6 times that of tetrabutyl titanate; finally add PVP with a mass fraction of 5%, and obtain an electrospinning precursor solution after magnetic stirring. Under the conditions of control voltage of 10KV and flow rate of 15μl / m, a large amount of nanomaterials appeared on the collector. After the electrospinning was completed, the nanomaterials on the collector were transferred to the muffle furnace and heated at 8°C / min. The rate is increased to 800 ° C for 1 hour, and the pure phase Er with high crystallization performance can be obtained. 2 Ti 2 o 7 nanomaterials.

[0050] figure 1 gives the obtained Er 2 Ti 2 o 7 Scanning electron micrograph (...

Embodiment 2

[0052] Mix acetic acid and DMF at a volume ratio of 0.4:1, and form a transparent solution by magnetic stirring; then add erbium nitrate and dissolve it fully by stirring, the quality of acetic acid and DMF is 8 times that of erbium nitrate; add it under rapid stirring For tetrabutyl titanate, the mass of acetic acid and DMF is 8 times that of tetrabutyl titanate; finally, PVP with a mass fraction of 7% is added, and the electrospinning precursor solution is obtained after magnetic stirring. Under the condition that the control voltage is 20KV and the flow rate is 10μl / m, a large amount of nanomaterials appear on the collector. After the electrospinning is completed, the nanomaterials on the collector are transferred to the muffle furnace and heated at 8°C / min. Raise the rate to 700°C for 2 hours to obtain a pure-phase Er2Ti2O7 nanomaterial with high crystallization performance, from figure 2 It can be seen that the positions of the obtained luminescence peaks are mainly two ...

Embodiment 3

[0055] Mix acetic acid and DMF at a volume ratio of 0.4:1, and form a transparent solution by magnetic stirring; then add erbium nitrate and dissolve it fully by stirring, the quality of acetic acid and DMF is 6 times that of erbium nitrate; add it under rapid stirring For tetrabutyl titanate, the mass of acetic acid and DMF is 8 times that of tetrabutyl titanate; finally add PVP with a mass fraction of 8%, and obtain an electrospinning precursor solution after magnetic stirring. Under the conditions of a control voltage of 15KV and a flow rate of 5 μl / m, a large amount of nanomaterials appeared on the collector. After the electrospinning was completed, the nanomaterials on the collector were transferred to the muffle furnace and heated at 9°C / min. If the temperature is increased to 600°C for 3 hours, a pure-phase Er2Ti2O7 nanomaterial with high crystallization performance can be obtained.

[0056] image 3 Given the X-ray diffraction pattern of the obtained nanomaterials, th...

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Abstract

The invention discloses an electrostatic spinning based pure-phase erbium titanate nanomaterial preparation method and application. The method includes: taking DMF (dimethyl formamide) as a solvent, adding an appropriate amount of PVP (polyvinyl pyrrolidone), enabling liquid drops to form a Taylor cone under an electrostatic field, and adopting an electrostatic spinning method to prepare a one-dimensional nanomaterial under the action of liquid surface tension and an electric field; performing heating, thermal preservation and cooling to obtain a pure cubic pyrochlore phase Er2Ti2O7 one-dimensional nanomaterial. The method is simple, feasible and high in repeatability, batch production requirements can be met, other rare earth ion doping processes are avoided, and traditional double-dopingor multi-doping processes are simplified.

Description

technical field [0001] The invention belongs to rare earth ternary Er 2 Ti 2 o 7 Preparation of compound one-dimensional nanomaterials and the field of luminescent technology, specifically relating to the preparation of pure-phase erbium titanate Er by an electrospinning method 2 Ti 2 o 7 Methods and applications of nanomaterials. Background technique [0002] The up-conversion luminescent material is a particularly important functional material, and has particularly important uses in the fields of display, anti-counterfeiting, and bioluminescence labeling. With the advancement of nanotechnology, nanoscale up-conversion luminescent materials have been paid more and more attention by people. In the past few decades, the matrix materials of nanoscale up-conversion materials have mainly focused on the elements of the rare earth family, and the typical molecular structure is NaREF 4 (RE=Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu). Hexagonal NaYF 4 The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/08D01D5/00C09K11/78
CPCC09K11/7701D01D5/003D01D5/0061D01F9/08
Inventor 葛万银徐美美焦思怡常哲张荔叶晓慧
Owner 深圳万知达科技有限公司
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