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Preparation method and application of a tungsten-based nanoflower material

A nano-flower and tungsten-based technology is applied in the field of preparation of tungsten-based nano-flower materials, which can solve rare problems and achieve the effects of good repeatability, high yield and good industrialization prospects.

Active Publication Date: 2020-12-01
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, there are few methods that can realize rare earth doping and maintain the nanoflower structure of tungsten oxide materials on a large scale.

Method used

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  • Preparation method and application of a tungsten-based nanoflower material
  • Preparation method and application of a tungsten-based nanoflower material
  • Preparation method and application of a tungsten-based nanoflower material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 50 g Cu and 50 g W metal powders and 0.5 g samarium chloride were wet ball milled for 2 h, and after vacuum drying, 50-200 nm rare earth doped Cu-W was prepared by variable current laser ion beam gas phase method Alloy nanospheres; the Cu-W alloy nanospheres were passed through H at a volume ratio of 1:1:1 2 O-H 2 o 2 -H 2 SO 4 The mixed solution was stirred at 60 °C for 12 h to remove Cu by liquid phase oxidation, and after filtration, washing and drying, rare earth doped W-WO 3 Composite material; W-WO doped with rare earth 3 The composite material was directly sintered at 350°C in an air atmosphere, and the samarium-doped tungsten-based nanoflower material with sheet-like abundant oxygen vacancies was prepared after calcination.

Embodiment 2

[0022] 50 g Cu and 50 g W metal powder and 1 g europium nitrate were wet ball milled for 2 h, and after sufficient vacuum drying, 100-500 nm rare earth doped Cu-W was prepared by variable current laser ion beam gas phase method Alloy nanospheres; the Cu-W alloy nanospheres were passed through H at a volume ratio of 1:1:1 2 O-H 2 o 2 -H 2 SO 4 The mixed solution was stirred at 60 °C for 12 h to remove Cu by liquid phase oxidation, and after filtration, washing and drying, rare earth doped W-WO 3 Composite material; W-WO doped with rare earth 3 The composite material was directly sintered at 450°C in an air atmosphere, and the europium-doped tungsten-based nanoflower material with sheet-like rich oxygen vacancies was prepared after calcination.

Embodiment 3

[0024] 5g Cu, 95 g W metal powder and 1 g Lanthanum Chloride were wet ball milled for 2 h, and after sufficient vacuum drying, 500-1 micron nm rare earth doped Cu was prepared by variable current laser ion beam gas phase method. -W alloy nanospheres; the Cu-W alloy nanospheres are passed through H at a volume ratio of 1:1:1 2 O-H 2 o 2 -H 2 SO 4 The mixed solution was stirred at 60 °C for 24 h to remove Cu by liquid phase oxidation, and after filtration, washing and drying, rare earth doped W-WO 3 Composite materials; the W-WO 3 Composite materials directly in Ar / H 2 The lanthanum-doped tungsten-based nanoflower material with sheet-like rich oxygen vacancies was prepared by sintering at 450°C under the atmosphere.

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Abstract

The invention discloses a preparation method and application of a tungsten-based nanoflower material. Cu, W metal blocks and rare earth salts are fully ball milled and mixed, and rare earth doped 50nm-1μm Cu-W is prepared by a variable current laser ion beam gas phase method Alloy nanospheres, and then remove metal copper by controlling the temperature and time of liquid phase oxidation to obtain rare earth doped W‑W 2 o 3 The composite structure is finally calcined to prepare a rare earth-doped tungsten-based nanoflower material with controllable sheet density and rich oxygen vacancies. The application of the above-mentioned tungsten-based nanoflower material in the preparation of photocatalyst, gas sensor or negative electrode material of battery. The prepared rare earth-doped tungsten-based nanoflower material containing rich oxygen vacancies can be applied to high-performance lithium-ion battery anode materials, sensor materials or photocatalytic materials. Compared with the prior art, the present invention has simple process steps, short reaction time, good repeatability, high yield, low cost and good potential for large-scale application.

Description

technical field [0001] The invention relates to technical fields such as battery materials, sensors, and photocatalysis, and in particular to a preparation method and application of a tungsten-based nanoflower material. Background technique [0002] Tungsten oxide is an important semiconductor oxide material. Because of its unique photoelectric properties, gas-sensing properties, and good chemical stability, it has a wide range of applications in the fields of sensitized solar cells, sensors, photocatalysis, and lithium-ion battery anode materials. Applications. Compared with other nanostructures, the tungsten oxide nanoflower structure has high porosity, larger specific surface area, better photoelectric performance and gas sensing performance, so it has great development potential and application prospects in many fields. [0003] At present, there are many preparation methods for tungsten oxide nanomaterials, including template method, anodic oxidation method, sol-gel me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/48C01G41/02C22C1/10B22F1/00C22C1/05
CPCC22C1/05C22C27/04B22F3/10B22F1/054B22F1/065
Inventor 岳鹿张文惠王旭徐洁张婷婷徐逸凡杨勇关荣锋
Owner YANCHENG INST OF TECH
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