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A three-dimensional sea urchin-like nanostructure tao 2 f The preparation method of the material

A nanostructure, sea urchin-like technology, applied in nanotechnology, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of low purity, single structure, large particle size, etc. short effect

Active Publication Date: 2021-12-14
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the invention is to solve the problem of the original TaO 2 The preparation of F materials has problems such as large particle size, easy agglomeration, low purity, and single structure. A three-dimensional sea urchin nanostructure TaO 2 The preparation process of F, its technical scheme is: use metal tantalum powder, hydrofluoric acid with a mass fraction of 40%, analytically pure acetic acid and deionized water as raw materials

Method used

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  • A three-dimensional sea urchin-like nanostructure tao <sub>2</sub> f The preparation method of the material
  • A three-dimensional sea urchin-like nanostructure tao <sub>2</sub> f The preparation method of the material
  • A three-dimensional sea urchin-like nanostructure tao <sub>2</sub> f The preparation method of the material

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Experimental program
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Effect test

Embodiment 1

[0018] Using metal tantalum powder, 40% hydrofluoric acid, analytically pure acetic acid and deionized water as raw materials. (1) Dissolve metal tantalum powder in hydrofluoric acid, the molar ratio of the two is 1:8, stir evenly to obtain a colorless transparent liquid; (2) Mix acetic acid and deionized water in a volume ratio of 0.4:1 to obtain acetic acid solution; (3) adding the acetic acid solution obtained in step (2) to the transparent solution containing tantalum and fluorine obtained in step (1) under stirring conditions; (4) using the hydrothermal method to mix the above mixed solution Put it into a hydrothermal reactor, and put it into a drying oven and heat it to 180 °C for 24 hours. (5) Stop heating; after the hydrothermal reactor is cooled to room temperature, the obtained white precipitate is centrifuged; then, after washing with ethanol and water, centrifugation and drying, TaO with a three-dimensional sea urchin-like nanostructure can be obtained 2 F materia...

Embodiment 2

[0023]Using metal tantalum powder, 40% hydrofluoric acid, analytically pure acetic acid and deionized water as raw materials. (1) Dissolve metal tantalum powder in hydrofluoric acid, the molar ratio of the two is 1:1, and stir evenly; (2) Mix acetic acid and deionized water uniformly in a volume ratio of 6:1 to obtain an acetic acid solution; (3) ) Under stirring conditions, the acetic acid solution obtained in step (2) is added to the tantalum- and fluorine-containing solution obtained in step (1); (4) hydrothermal method is adopted, and the above mixed solution is put into a hydrothermal reactor and heated to 175 °C in a drying oven for 40 hours. (5) Stop heating; after the hydrothermal reactor is cooled to room temperature, the obtained white precipitate is centrifuged; then, after washing with ethanol and water, centrifugation and drying, TaO with a three-dimensional sea urchin-like nanostructure can be obtained 2 F material. .

Embodiment 3

[0025] Using metal tantalum powder, 40% hydrofluoric acid, analytically pure acetic acid and deionized water as raw materials. (1) Dissolve metal tantalum powder in hydrofluoric acid, the molar ratio of the two is 1:5, and stir evenly; (2) Mix acetic acid and deionized water in a volume ratio of 0.2:1 to obtain an acetic acid solution; (3) ) Under stirring conditions, the acetic acid solution obtained in step (2) is added to the tantalum-containing and fluorine-containing solution obtained in step (1); (4) using hydrothermal method, the above mixed solution is put into the hydrothermal reactor and put it in a drying oven and heated to 210 °C for 10 hours. (5) Stop heating; after the hydrothermal reactor is cooled to room temperature, the obtained white precipitate is centrifuged; then, after washing with ethanol and water, centrifugation and drying, TaO with a three-dimensional sea urchin-like nanostructure can be obtained 2 F material.

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Abstract

The invention discloses a method for preparing TaO with a three-dimensional sea urchin-like nanostructure 2 The method of F has great application prospects in the field of photo / electrocatalysis. It belongs to the technical field of nanometer material preparation. Metal tantalum powder, hydrofluoric acid with a mass fraction of 40%, analytically pure acetic acid and deionized water are used as raw materials. It has the following steps: (1) dissolving tantalum powder in hydrofluoric acid, and the molar ratio of the two is 1: (1-8); (2) mixing acetic acid and water in a volume ratio (0.2-6): 1; (3) After stirring, add the acetic acid solution obtained in step (2) to the tantalum and fluorine-containing solution obtained in step (1); (4) Use hydrothermal method: move the above solution to the reaction kettle and place it in an oven Medium; at 175~210°C, react for 10~40 hours. (5) After the reaction kettle is cooled to room temperature, the obtained product is centrifuged, washed with ethanol and water, centrifuged and dried to obtain white sea urchin-like TaO 2 F material.

Description

technical field [0001] The invention relates to TaO with a three-dimensional sea urchin-like nanostructure 2 The preparation process of the F material belongs to the technical field of nano material preparation. Background technique [0002] TaO 2 F belongs to perovskite (ABX 3 ) structure in which the A site is a vacancy; with cubic ReO 3 Crystal structure, corners share Ta(O / F) 6 Octahedron, in which O and F atoms are at the same crystallographic site; belonging to space group Pm-3m. TaO 2 F material has low density (6.51g / cm 3 ) and exhibit an expansion coefficient close to zero: at -250 to 520 o Within the range of C, its linear expansion coefficient is only 1-3×10 -7 K -1 . In addition, TaO 2 F has no inherent absorption band in the mid-infrared region and can be used as a wave-transmitting material in the infrared band. [0003] As a wide bandgap semiconductor (3.91eV), TaO 2 F materials have a variety of applications ranging from light-emitting diodes, ph...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G35/00B82Y40/00
CPCC01G35/00B82Y40/00C01P2004/64C01P2004/61C01P2004/16C01P2004/45C01P2002/34
Inventor 耿欣温广武李俐李玉真王鹏
Owner SHANDONG UNIV OF TECH