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Method for preparing nano zinc oxide

A technology of nano-zinc oxide and zinc powder, which is applied in the direction of zinc oxide/zinc hydroxide, nanotechnology, nanotechnology, etc., can solve the problems of many chemical reagents, high preparation costs, and cumbersome procedures, and achieve low cost and high reactivity. The effect of high and good application prospects

Active Publication Date: 2013-10-16
SHANXI KEQI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the above methods can successfully prepare nano-zinc oxide, there are many problems such as the use of chemical reagents and cumbersome procedures, the preparation cost is high and it is easy to cause pollution.

Method used

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  • Method for preparing nano zinc oxide
  • Method for preparing nano zinc oxide

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Effect test

Embodiment 1

[0023] A method for preparing nano-zinc oxide, the specific steps comprising:

[0024] ① Ultrasonic dispersion: ultrasonically disperse the zinc powder in the pure water installed in the inner tank of the reactor, the volume ratio of pure water to zinc powder is 200:1, the ultrasonic temperature is 80°C, the ultrasonic frequency is 44K Hz, and the time is 60 minutes ;

[0025] ② Hydrothermal oxidation: put the above reactor liner into the reactor shell, seal the reactor and place it in an oven at 200°C for 18 hours, then cool to room temperature, and filter out the contents of the liner;

[0026] ③Vacuum drying: place the filtered substance in a vacuum oven at 60°C and dry for 1 hour to obtain the nano zinc oxide product.

[0027] XRD and TEM characterization results show that the product is nano zinc oxide with a hexagonal wurtzite crystal structure, and the average particle size is about 70nm.

Embodiment 2

[0029] A method for preparing nano-zinc oxide, the specific steps comprising:

[0030] ① Ultrasonic dispersion: ultrasonically disperse the zinc powder in the pure water installed in the inner tank of the reactor, the volume ratio of pure water to zinc powder is 500:1, the ultrasonic temperature is 60°C, the ultrasonic frequency is 36K Hz, and the time is 30 minutes ;

[0031] ②Hydrothermal oxidation: Put the inner liner of the above reaction kettle into the outer shell of the reaction kettle, seal the reaction kettle and place it in an oven at 180°C for 48 hours, then cool to room temperature, and filter out the contents of the inner liner;

[0032] ③Vacuum drying: place the filtered substance in a vacuum drying oven at 70°C for 2 hours to obtain the nano-zinc oxide product.

[0033] XRD and TEM characterization results show that the product is nano zinc oxide with a hexagonal wurtzite crystal structure, and the average particle size is about 65nm.

Embodiment 3

[0035] A method for preparing nano-zinc oxide, the specific steps comprising:

[0036] ① Ultrasonic dispersion: ultrasonically disperse the zinc powder in the pure water installed in the inner tank of the reactor, the volume ratio of pure water to zinc powder is 300:1, the ultrasonic temperature is 70°C, the ultrasonic frequency is 42K Hz, and the time is 20 minutes ;

[0037] ② Hydrothermal oxidation: put the above reactor liner into the reactor shell, seal the reactor and place it in an oven at 180°C for 72 hours, then cool to room temperature, and filter out the contents of the liner;

[0038] ③Vacuum drying: place the filtered substance in a vacuum oven at 80°C and dry for 1 hour to obtain the product.

[0039] XRD and TEM characterization results show that the product is nano zinc oxide with a hexagonal wurtzite crystal structure, and the average particle size is about 70nm.

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Abstract

The invention provides a method for preparing nano zinc oxide. The method specifically comprises the following steps of: ultrasonically dispersing zinc powder into pure water contained in a liner of a reaction kettle; sealing the reaction kettle, and then preserving the heat of the reaction kettle for 18-72 hours in a drying oven of which the temperature is 180-200 DEG C; cooling to the room temperature; filtering out the material in the liner, and performing vacuum drying on the material to obtain a product. The product is the nano zinc oxide with a wurzite hexagonal crystal structure, and can be widely used in a plurality of fields including photocatalysis, photovoltaic conversion, sensing detection, optics, microelectronics and the like. The preparation method provided by the invention has the characteristics of zero pollution, low cost, simple process, convenient operation, easiness in industrial production and the like.

Description

technical field [0001] The invention belongs to the field of new material preparation, and in particular relates to a method for preparing nanometer zinc oxide. [0002] Background technique [0003] Zinc oxide is an important wide-bandgap semiconductor material with a bandgap of 3.37eV at room temperature. It has important application prospects in the fields of photocatalysis, photoelectric conversion, sensors, field emission devices, and lasers. Nano-sized zinc oxide, such as nanoparticles, nanosheets, nanorods, nanowires, nanobelts, nanocones, etc., due to its small size, large specific surface area, and specific morphology, has great potential in optical, electrical, magnetic, etc. On the one hand, it has better performance than general zinc oxide products. [0004] There are many methods for preparing nano zinc oxide, such as template method, electrolytic zinc acid leaching slag ammonia method, plasma gas phase method, sol-gel method, emulsification ultrasonic method,...

Claims

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Application Information

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IPC IPC(8): C01G9/02B82Y30/00
Inventor 李凌杰雷惊雷刘佩佩张洁何建新潘复生
Owner SHANXI KEQI TECH CO LTD
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