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Nano-hollow sphere structured amorphous zinc oxide and method for producing the same

A technology of hollow spheres and amorphous state, which is applied in the field of nano-hollow sphere structure amorphous zinc oxide and its preparation, can solve problems that have not been seen yet, and achieve the effects of maximum utilization, good dispersion, and wide application prospects

Inactive Publication Date: 2009-05-13
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, there have been no reports about amorphous zinc oxide with hollow spherical structure with small size (10nm-23nm), good dispersion and uniform particle size.

Method used

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  • Nano-hollow sphere structured amorphous zinc oxide and method for producing the same
  • Nano-hollow sphere structured amorphous zinc oxide and method for producing the same
  • Nano-hollow sphere structured amorphous zinc oxide and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Using oxygen in the air as an active oxygen source to prepare amorphous zinc oxide with nano hollow spheres

[0024] Step 1: Weigh 126.466mg of zinc stearate, 2.0g of n-hexadecylamine, 143.6mg of 1,2-hexadecanediol and 2.0g of tri-n-octylphosphine oxide, and put the above precursors into a capacity of 25ml In the three-necked flask, the middle one was plugged with a rubber stopper, and a thermometer was inserted into the stopper, while nitrogen gas was introduced into the other two ports, while nitrogen gas was discharged, and the nitrogen gas was discharged from one port, which was immersed in water with a rubber tube.

[0025] Step 2: Keep nitrogen protection all the time, and then start to raise the temperature slowly, with an average of 0.5 degrees / min. The solution in the bottle is always clear throughout the process until the temperature rises to 260°C. Keep this temperature for 2 hours, and the reaction solution turns light yellow;

[0026] Step 3: rem...

Embodiment 2

[0029] Example 2: Using hydrogen peroxide as an active oxygen source to prepare amorphous zinc oxide with nano hollow sphere structure

[0030] Step 1: This operation is exactly the same as Step 1 in Example 1.

[0031] Step 2: This operation is exactly the same as Step 2 in Example 1.

[0032] Step 3: Add 1 mL of hydrogen peroxide dropwise, keep warm at 260° C. for 4 hours, and cool down naturally. The reaction solution turns orange, which is the crude reaction product.

[0033] Step 4: This operation is exactly the same as Step 4 in Example 1.

[0034] From its transmission electron microscope photo Figure 7 As shown, the obvious hollow structure can be seen, with a diameter of 15nm±3nm; from the X-ray energy scattering spectrum Figure 8 It can be seen that the A signal peak comes from the oxygen element in the product, and the B, C, D, and E signal peaks come from the zinc element in the product.

[0035] It can be seen from the above embodiments of the present invent...

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Abstract

The invention discloses amorphous zinc oxide with a nanometer hollow sphere structure and a preparation method thereof, which is characterized in that the preparation method comprises the following steps: slowly heating the temperature to 240 to 280 DEG C under the protection of inert atmosphere after zinc stearate of 126.466 milligram is uniformly mixed with hexadecylamine of 2.0 plus or minus 0.5 gram, 1, 2- hexadecane diol of 143.6 plus or minus 30 milligram and trioctylphousphine oxide of 2.0 plus or minus 0.5 gram according to the blending ratio; and obtaining the amorphous zinc oxide with the nanometer hollow sphere structure which has the diameter of 10 to 23 nm when heat preservation is conducted under the action of an active oxygen source, wherein the thickness of the spherical shell of a hollow sphere is 1 to 5 nm and the diameter of a hollow cavity in the hollow sphere is 8 to 13 mm. The amorphous zinc oxide with the nanometer hollow sphere structure prepared by adopting the method has the advantages of small and uniform dimension, large specific area and good dispersivity, and has wide application prospect in the field of drug release, catalytic reaction and micro-reactors and the like.

Description

technical field [0001] The invention belongs to the technical field of nanometer zinc oxide (ZnO) particles, in particular to amorphous zinc oxide with a nanometer hollow sphere structure and a preparation method thereof. Background technique [0002] Nano-zinc oxide material is a new type of inorganic functional material. Due to its special properties in light, electricity, and catalysis, it can be widely used in drug release, gas sensing, high-efficiency catalysts, solar cells, microreactors, and molecular In the field of sensors, especially in the field of bio-drug loading, since the zinc oxide material itself has good biocompatibility, it can achieve long-term circulation in the living body, which is conducive to the effective release of drugs. [0003] In recent years, nano-zinc oxide materials have attracted more and more scholars' interest. The American "Journal of the American Chemical Society" (JACS127, 13331-13337, 2005) and the German "Advanced Materials" (Adv. M...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02A61K47/04B01J23/06
Inventor 林岳唐孝生曾杰王晓平
Owner UNIV OF SCI & TECH OF CHINA
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