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Method for quickly preparing zinc oxide nanobelt under air atmosphere

A zinc oxide nanotechnology, air atmosphere technology, applied in zinc oxide/zinc hydroxide, nanotechnology and other directions, can solve the problems of long generation cycle, small output, limited number of nanobelts, etc., to reduce the reaction time and simplify the gas circuit system Effect

Inactive Publication Date: 2012-05-02
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After searching the existing documents, it was found that Jinhu Yang, Guangming Liu, Jun Lu, Yongfu Qiu, and Shihe Yang et al published a paper titled Electrochemical route to the synthesis of ultrathin ZnO nanorod / nanobelt arrays on zinc substrate (preparation of ultrathin zinc oxide nanorods / nanobelts on zinc substrates by electrochemical methods), this paper uses electrochemical methods to obtain neatly arranged nanobelts on zinc cathodes , has good quality, but the number of nanobelts prepared by this method is limited, which is not suitable for mass production
The publication number is CN1789136A patent "method for preparing zinc oxide nanowires or zinc oxide nanobelts". This invention uses zinc acetate as the zinc source, deposits zinc on the zinc sheet, and obtains nanostructures by annealing. The preparation method is simple and the shape The appearance is controllable, but it still has the disadvantages of small output and long production cycle

Method used

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  • Method for quickly preparing zinc oxide nanobelt under air atmosphere
  • Method for quickly preparing zinc oxide nanobelt under air atmosphere
  • Method for quickly preparing zinc oxide nanobelt under air atmosphere

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Take an appropriate amount of zinc oxide powder and coke powder with a balance, and the mass ratio is 7: 1 to 1: 1. In this embodiment, 5 grams of zinc oxide powder and 5 grams of coke powder are weighed, and they are evenly mixed with a mortar ;

[0027] (2) The mixed raw material is placed in a hollow graphite tube. The specification of the graphite tube is 12 centimeters long, 30 millimeters in outer diameter, and 24 millimeters in inner diameter. One end is closed, and one end is open. The graphite tube is placed in a horizontal quartz tube, and placed Within the range of action of the high-frequency coil;

[0028] (3) Turn on the cooling water of the high-frequency equipment, turn on the heating power of the equipment, the temperature in the graphite tube rises rapidly, and within about 2 minutes, the temperature in the graphite tube rises to about 1200 degrees Celsius, and the air continues to flow in, and a large amount of white smoke appears in the quartz tu...

Embodiment 2

[0032] A method for rapidly preparing zinc oxide nanoribbons under an air atmosphere, using air as the atmosphere environment, using a mixture of zinc oxide powder and carbonaceous material powder as a raw material, using high-frequency induction heating equipment to heat the mixture, and collecting white cotton flocculent oxide The zinc nanobelt specifically comprises the following steps:

[0033] (1) take zinc oxide powder and graphite powder as raw material, the mass ratio of zinc oxide powder and graphite powder is 3: 1, guarantee that graphite powder is suitably excessive, it is mixed homogeneously;

[0034] (2) mixed raw material is placed in hollow graphite tube, and the specification of hollow graphite tube is external diameter 30 millimeters, inner diameter 24 millimeters, length 12 centimeters, one end is closed, and the other end is open, and hollow graphite tube is placed in horizontal quartz tube, And put it within the range of high-frequency equipment;

[0035] ...

Embodiment 3

[0039] A method for rapidly preparing zinc oxide nanoribbons under an air atmosphere, using air as the atmosphere environment, using a mixture of zinc oxide powder and carbonaceous material powder as a raw material, using high-frequency induction heating equipment to heat the mixture, and collecting white cotton flocculent oxide The zinc nanobelt specifically comprises the following steps:

[0040] (1) Using zinc oxide powder and activated carbon as raw materials, the mass ratio of zinc oxide powder and activated carbon is 4: 1, ensuring that the activated carbon is properly excessive and mixed evenly;

[0041] (2) mixed raw material is placed in hollow graphite tube, and the specification of hollow graphite tube is external diameter 30 millimeters, inner diameter 24 millimeters, length 12 centimeters, one end is closed, and the other end is open, and hollow graphite tube is placed in horizontal quartz tube, And put it within the range of high-frequency equipment;

[0042] (3...

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Abstract

The invention relates to a method for quickly preparing a zinc oxide nanobelt under an air atmosphere, and belongs to the technical field of preparation of nano materials. The method comprises the following process steps of: grinding and mixing zinc oxide powder and carbonaceous material powder according to an appropriate proportion; heating the mixture; reducing zinc by using a carbon thermal reduction reaction; and mixing the zinc and oxygen in an appropriate area to generate the nanobelt. Compared with the prior art, the method has the advantages that: air is directly used as an atmosphere environment, so that preparation processes are reduced, and an air channel system is simplified; a high-frequency induction furnace is used as heating equipment, so that raw materials can be heated to a required temperature within 2 minutes; and the process from material feeding to growth termination is only about 5 minutes, so that preparation time is reduced.

Description

technical field [0001] The invention relates to a method for preparing one-dimensional nanometer materials, in particular to a method for rapidly preparing zinc oxide nanobelts in an air atmosphere. Background technique [0002] Zinc oxide is a wide bandgap, direct bandgap semiconductor oxide with a bandgap width of 3.37ev at room temperature and an exciton binding energy of 60Mev. Zinc oxide is an excellent semiconductor material, which can realize high-efficiency ultraviolet light emission at room temperature, and has various properties such as piezoelectricity, pressure sensitivity, photoluminescence, and transparent conductivity. [0003] Quasi-one-dimensional nanomaterials are one of the hottest fields in materials research at present. Zinc oxide is an important oxide semiconductor, and its quasi-one-dimensional nanostructure has attracted widespread attention in the academic community. People have used quasi-one-dimensional zinc oxide nanomaterials to construct variou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/03B82Y40/00
Inventor 张亚非钱炳建李海蓉杨志魏浩
Owner SHANGHAI JIAO TONG UNIV
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