Reticular nano hole zinc oxide micron hollow ball and preparation method thereof

A zinc oxide micron and hollow sphere technology, applied in nanostructure manufacturing, zinc oxide/zinc hydroxide, nanotechnology, etc., can solve the problem that zinc oxide micron hollow spheres cannot be produced, the shape and size of the hollow part are difficult to control, and the environment causes Pollution and other problems, to achieve the effect of easy control of various parameters, low cost and low energy consumption

Inactive Publication Date: 2008-11-26
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are deficiencies in this preparation method. First of all, it cannot produce zinc oxide micron hollow spheres whose surface is a network-like nanometer-sized porous structure; secondly, it uses zinc powder as a starting material, so the prepared oxide The shape and quality of the zinc hollow spheres depend entirely on the shape and quality of the raw zinc powder. The diameter of the final zinc oxide hollow spheres is equivalent to the size of the initial zinc powder. To obtain uniform zinc oxide hollow spheres, it is necessary to Zinc powder

Method used

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  • Reticular nano hole zinc oxide micron hollow ball and preparation method thereof
  • Reticular nano hole zinc oxide micron hollow ball and preparation method thereof
  • Reticular nano hole zinc oxide micron hollow ball and preparation method thereof

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Effect test

Embodiment 1

[0018] Embodiment 1: complete preparation successively according to the following steps: a) according to the molar ratio of zinc salt: chelating agent: sodium citrate: water=1: 0.5: 0.15: 50, be placed in container after weighing and stir to dissolve, after sealing The product is obtained by incubating at 70° C. for 10 hours under the state; wherein zinc nitrate is selected as the zinc salt, urea is selected as the chelating agent, and deionized water is selected as the water. The product was obtained as a white precipitate. b) filter the white precipitate first, and wash it with water once to obtain the following figure 1 and image 3 as shown and as Figure 4 The network nanoporous micron hollow sphere shown in the curve in (a) is then heated at 300°C for 3 hours to obtain the following figure 2 as shown and as Figure 4 Figure (b) of and Figure 5 The networked nanoporous ZnO micron hollow spheres shown in the middle curve.

Embodiment 2

[0019] Embodiment 2: complete preparation successively according to the following steps: a) according to the molar ratio of zinc salt: chelating agent: sodium citrate: water=1: 0.8: 0.13: 75, be placed in container and stir to dissolve after weighing, after sealing The product is obtained by incubating at 77° C. for 9 hours under the state; wherein zinc nitrate is selected as the zinc salt, urea is selected as the chelating agent, and deionized water is selected as the water. The product was obtained as a white precipitate. b) first filter the white precipitate, and wash it with water for 2 times to obtain the following figure 1 and image 3 as shown and as Figure 4 (a) network nanoporous micron hollow spheres shown in the curve, and then heated at 350 ° C for 2.5 hours to obtain the following figure 2 as shown and as Figure 4 Figure (b) of and Figure 5 The networked nanoporous ZnO micron hollow spheres shown in the middle curve.

Embodiment 3

[0020] Embodiment 3: complete preparation successively according to the following steps: a) according to the molar ratio of zinc salt: chelating agent: sodium citrate: water=1: 1: 0.1: 100, be placed in container after weighing and stir to dissolve, after sealing The product is obtained by incubating at 85° C. for 7 hours under the state; wherein zinc nitrate is selected as the zinc salt, urea is selected as the chelating agent, and deionized water is selected as the water. The product was obtained as a white precipitate. b) first filter the white precipitate and wash it with water for 3 times to obtain the following: figure 1 and image 3 as shown and as Figure 4 The network nanoporous micron hollow sphere shown in the curve in (a) is then heated at 400°C for 2 hours to obtain the following figure 2 as shown and as Figure 4 Figure (b) of and Figure 5 The networked nanoporous ZnO micron hollow spheres shown in the middle curve.

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Abstract

The invention discloses a reticulate nanopore zinc-oxide micron hollow sphere and a preparation method thereof. The hollow sphere of the invention comprises the following materials: the surface of the zinc-oxide micron hollow sphere is provided with reticulate nanopore, wherein, the diameter of the hollow sphere is 1 to 10mum and the aperture of the nanopore is 50 to 100nm; the method of the invention comprises a liquid-phase chemical method, particularly (a) according to the mole ratio that zinc salt: chelating agent: sodium citrate: water is equal to 1:(0.5-1.5):(0.05-0.15):(50-150), the materials are weighted, then put into a vessel, stirred, dissolved and kept warm for three hours at the temperature of 70 to 100 DEG C under the sealing state to obtain a product; (b) the obtained product is filtrated, washed more than one time and heated for 1 to 3 hours at the temperature of 300 to 500 temperature, and the reticulate nanopore zinc-oxide micron hollow sphere is obtained; the zinc salt is zinc nitrate or zinc acetate or zinc chloride or zinc sulfate, and the chelating agent is urea or ammonia or hexamethylene tetramine or ammonium hydroxide. The hollow sphere can be widely applied to the fields of drug transportation, chemical reaction carrier, cosmetics, coating material, catalytic and photocatalysis material, etc.

Description

technical field [0001] The invention relates to a zinc oxide hollow sphere and a preparation method thereof, in particular to a mesh nanoporous zinc oxide micron hollow sphere and a preparation method thereof. Background technique [0002] With the rapid development of modern industry, while enjoying the benefits brought by modern technology, people have also tasted the evil consequences of industrialization - environmental pollution. Since the discovery that semiconductor materials can catalyze the degradation of organic pollutants after exposure to light, the search for efficient and non-toxic catalysts has been the goal of people's efforts, and very fruitful research and application results have been achieved. Semiconductor materials, especially wide-bandgap semiconductors, such as titanium dioxide and zinc oxide, have shown broad application prospects in wastewater treatment, air purification, and photochemical cells. An important condition for improving the efficiency ...

Claims

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Application Information

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IPC IPC(8): C01G9/02B82B3/00
Inventor 王茗曹雪丽方明张立德
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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