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Production of high-quality ZnO nanometer capsule with semiconductive luminescent materials

A technology of luminescent materials and semiconductors, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of harsh process conditions, high reaction temperature and energy consumption, expensive production equipment, etc., and achieves wide range of process conditions and reaction temperature. and the effect of low energy consumption and excellent photoluminescence performance

Inactive Publication Date: 2006-08-16
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because this method requires the use of templates, it has the disadvantages of complex production process, demanding process conditions, high production costs, difficult purification of products and its size is limited by the size of templates, etc.
The second method is to adopt the chemical vapor deposition method. The disadvantages of this method are mainly that noble metal catalysts are needed, the production equipment is expensive, the reaction temperature and energy consumption are high, the conditions are difficult to control, the repeatability is not good, and the product yield is low. Large particles (>100nm), difficult for large-scale industrial production

Method used

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  • Production of high-quality ZnO nanometer capsule with semiconductive luminescent materials
  • Production of high-quality ZnO nanometer capsule with semiconductive luminescent materials
  • Production of high-quality ZnO nanometer capsule with semiconductive luminescent materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Choose 1 gram of zinc acetate (Zn(AC) 2 2H 2 O) powder, added to the concentration of 3% hydrogen peroxide (H 2 o 2 ) solution and fully stirred and dissolved; after the dissolution was complete, adjust its pH value to 10 with ammonia water, then put it into a closed high-pressure reactor, and carry out a hydrothermal reaction at 200°C and its own pressure for 12 hours; suction filter the solid product out, washed with distilled water, and dried to obtain the desired product ZnO nanocapsules.

[0025] Such as figure 1 , figure 2 , image 3 As shown, adopt Japan Rigaku D / Max-3C X-ray powder diffractometer (Cu Kα radiation, λ=1.5406 ) to measure the crystal structure of prepared material; The morphology and size of the product were observed; the luminescence performance of the product was tested by a Japanese Hitachi F-4500 fluorescence spectrometer, and an Xe lamp was selected as the excitation light source at room temperature, and the excitation wavelength was 3...

Embodiment 2

[0031] Choose 1 gram of zinc acetate (Zn(AC) 2 2H 2 O) powder, added to the concentration of 30% hydrogen peroxide (H 2 o 2 ) solution and fully stirred and dissolved; after the dissolution was complete, adjust its pH value to 8 with ammonia water, then put it into a closed high-pressure reactor, and carry out a hydrothermal reaction at 200 ° C and its own pressure for 12 hours; the solid product was suction filtered out, washed with distilled water, and dried to obtain the desired product ZnO nanocapsules.

[0032] Such as Figure 4 , Figure 5 , Figure 6 As shown, adopt Japan Rigaku D / Max-3C X-ray powder diffractometer (Cu Kα radiation, λ=1.5406 ) to measure the crystal structure of prepared material; The shape and size of the product were observed. A Japanese Hitachi F-4500 fluorescence spectrometer was used to test the luminescence performance of the product, and an Xe lamp was selected as the excitation light source at room temperature, and the excitation wavelen...

Embodiment 3

[0038] Choose 1 gram of zinc acetate (Zn(AC) 2 2H 2 O) powder, added to the concentration of 3% hydrogen peroxide (H 2 o 2 ) solution and fully stirred and dissolved; after the dissolution was complete, adjust its pH value to 9 with ammonia water, then put it into a closed high-pressure reactor, and perform a hydrothermal reaction at 190°C and its own pressure for 18 hours; suction filter the solid product out, washed with distilled water, and dried to obtain the desired product ZnO nanocapsules.

[0039] Such as Figure 7 , Figure 8 , Figure 9As shown, adopt Japan Rigaku D / Max-3C X-ray powder diffractometer (Cu Kα radiation, λ=1.5406 ) to measure the crystal structure of prepared material; The morphology and size of the product were observed; the luminescence performance of the product was tested by a Japanese Hitachi F-4500 fluorescence spectrometer, and an Xe lamp was selected as the excitation light source at room temperature, and the excitation wavelength was 325...

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Abstract

Production of high-quality luminescent material ZnO nanometer capsule of semiconductor is carried out by adding zinc acetate powder into aqueous hydrogen peroxide, agitating, dissolving, regulating pH value to 8-11, putting it into closed high-pressure reactor, hydrothermal reacting at 190-200 degrees C and self-pressure for 12-18hrs, abstraction filtering the crystallized product, washing by deionized water and drying to obtain the final product. It is cheap and simple, non-toxic and non-pollution and has excellent photo-luminescent performance.

Description

technical field [0001] The invention relates to a preparation method of a high-quality semiconductor luminescent material ZnO nanocapsule, belonging to the field of semiconductor luminescent materials. Background technique [0002] At present, nano-ZnO has been widely used in the manufacture of gas sensors, phosphors, varistors, ultraviolet shielding materials, image recording materials, piezoelectric materials, pressure-sensitive materials, high-efficiency catalysts, cosmetics and coatings. This is because the particle size of nano-ZnO is between 1 and 100nm. It is a new type of multifunctional fine inorganic product. Its particle size is small and its specific surface area is large. Nano-ZnO shows many special properties different from bulk ZnO, such as Small size effect, surface effect, quantum effect, non-migration, fluorescence, piezoelectricity, ability to absorb and scatter ultraviolet rays, etc. [0003] ZnO nanocapsules have special uses due to their hollow structu...

Claims

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Application Information

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IPC IPC(8): C09K11/08
Inventor 张永才吴晓张明胡效亚
Owner YANGZHOU UNIV
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